Filling The Void

A while ago I spotted a a Mustang with a grill to radiator cover plate fitted and I liked the look of it. Over the years I have sort of kept an eye out for one for my car and eventually found one a couple of weeks ago. This is a little post on me fitting it as it doesn’t warrant a full fitting guide as there are only four bolts to hold it in place.

The old look of the car was fine but there is always that gap after the grill to radiator, it’s just an empty void.

The part was ordered from the USA and arrived about ten days later well wrapped in a box with plenty of padding.

The “Show Panel” as the company called it done a few variations; natural finish, anodised black or a brushed steel finish. As my under hood colour scheme is naturally a satin black with chrome, I went for the black anodised look.

This panel is the single flat panel type and my preference, as it covers the gap, but leaves the natural look of the radiator top rail. The other point is that it will allow just a little more airflow to the radiator as well. There are other designs on the market where the panel is bent up into an “L” shape to then cover the front of the radiator support.

With this panel there comes a roll of edging strip and four plastic washers.

On the first test fit it was obvious that the panel was not going to fit with the horns in their correct locations mounted on top of the radiator support.

The supplied instructions (which came on a post it note sized bit of paper), advised you to move the horns out of the way lower down. Where you wanted to move them to is your choice of course, but lower down to keep things looking clean made sense instead of cluttering inside the engine bay.

I removed the first one and it just happened to be that the top radiator bolts would be perfect, but the horns would need a little mod. The mod came to the holding brackets of the horns which need a more pronounced “S” curve to move it away from the support panel. I could have left them untouched if I pointed them both towards the centre of the radiator, which could have a detrimental effect on the cooling.

The test fitting here shows the initial bracket ‘modification’. The locating pin to stop the horn twisting in the original position(s) was straightened out to allow a flush fit.

Both horns were removed and cleaned before they were refitted to their new locations.

There was enough slack in the horn wiring loop to allow the connection again all be it through a different hole where the aircon radiator pipes would have passed through.

That was the worst part done, now it was time to fit the edging strip to the panel. This was a nice touch and finished the panel of nicely. I made sure that the join wouldn’t be seen as it would be hidden under the fender lip.

The instructions advise to cover the panel with masking tape to protect it from damage while fitting along with the edges of the fenders and around the hood latch. As I was being super careful and I didn’t actually need it.

Two bolts from the middle hood latch and two that hold the top of the grill in place to the headlight buckets needed to be removed. As they were satin finish I thought they would look better in polished finish. I think that was a good call, same bolts here, but one was polished and the other still in natural satin.

The panel needed to be slotted under the radiator support top rail, while bowing the middle up to slot under the front edge of the fender lip.

With the panel in place it was a case of refitting the two centre latch bolts and the two end bolts for the headlight and grill. The supplied plastic washers were used to protect the panel.

The two end bolts didn’t quite line up, so I had to loosen a few smaller bolts to locate the panel where I could then refit the bolts. With everything aligned it was simple case to tighten everything back up again.

With everything in place, I could then clean the show panel from my finger marks.

As it was getting dark now. I decided to call it a day there and fit the remaining edging strip to the hood bump stop holes.

In hind sight I should have done it before fitting, arrowed.

So there you have it, my new panel that I made dirty again with my finger prints, which needed another clean. I can see me constantly cleaning this panel as it shows any finger prints.

the final step was to fill the holes in the radiator support where the horns were with black grommets to finish the look.

Before………………………………….After

I just think the panel neatens things up a bit and I’m really pleased with the result. 🙂

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Spring Doubles Up

I decided to make a little upgrade to the car to help with a very minor issue that I decided to rectify. The modification also added a little blink under the hood and something else to clean while I’m at it.

The issue was that on the odd occasion when lifting my foot of the throttle and stopping the idle would be a little too high. This could be cured by tapping the gas pedal and it would settle down again. On investigation it appeared to be the throttle return springs on the standard throttle rod didn’t strong enough to return the carb throttle body to it’s correct closed position every single time.

For a stock set up there is a single spring to return the angled throttle rod. Not very safe if the spring breaks or stretches as it could leave an open throttle. So the simple fix is to fit a secondary larger spring around the outside of the smaller spring. Although this configuration was fine the throttle feel was very light under foot.

I spoke to Adam who advised a rose joint billet throttle rod would help with the feel, but an alternative spring return would be needed if you swapped the rods out, more on that in bit. So I came home with a new throttle rod. I wasn’t to keen on the billet satin finish, so I spent a few hours sanding and polishing down to a shiny version which came out really well.

The first job was remove the old rod from the carb throttle body which was held in place by a lock nut. The two springs on the dog leg part of the old rod simply unhooked.

The second task was to remove the other end from the gas pedal bushing which is held in place by a split pin.

With the old rod removed I could compare the length of the original stup to the new rod which was also adjustable. The first pic shows the shine I managed to get on the billet rod.

These billet rods have a left hand thread and a right hand thread, so when twisting the rod in the middle it winds out both ends in or out for a synchronous adjustment. I set the rod to be the same length by default as the old one for now. The gas pedal needed to be a little higher inside the car for my liking as well, again more on that a little later.

I unscrewed the carb end of the new rod which has a conical fixing to fit inside the larger carb throttle body nearer the top for a test fitting and to see how the rose joint fitting would locate. The fitting was bit loose and required a single washer to pack out the gap in order to pull the rose joint firmly into the throttle body without any lateral movement. The movement now all comes from the rose joint itself.

(Note the old satin finish here.)

We now leave the throttle rod fitting at this point as the new return springs had to be fitted next. This would also make life easier with everything out of the way.

The return springs are Holley kit upgrades with an additional bracket, a spring levelling ring body fitting bolts and a choice of springs.

The original return spring is on the left. Although it’s shorter and slightly fatter, it had less distance to cover. The other springs have a much bigger gap to span and they have a different stronger positive tension when stretched. You will also notice the double loop closed ring ends on the Holley springs where they simply can’t become detached from the brackets.

Depending on the combination of springs, it will determine the overall feel of the throttle. I decided that the stronger pair for a max return would be my choice. There are two holes on the carb fitting ring (left picture), and two on the bracket. I made the mistake of putting the springs on the ring first.

This made life very difficult while trying to attach the pair of springs to the bracket as there wasn’t enough movement to allow the second spring to attach without tangling the other spring. So I had to remove one of the springs in order fit to the bracket first then onto the throttle ring. The secret is to fit first spring to the ring as you normally would, then the second spring fitting needs to be twisted in reverse first to allow the open ring to untwist and end up where it should be. If you don’t the springs will tangle and be twisted once fully fitted. I won’t deny it, it took me a few attempts to get right, the air did turn the same colour as the car, very blue as the springs tangled up on the first couple of attempts.

Eventually I manged to connect both sections.

To fit the bracket it needs to locate over a corner stud with the bigger hole that holds the carb in place. If the stud was longer then a second nut would bolt the bracket down.

A second smaller bolt nearer to the front of the bracket that also holds the spring bracket in place and to stop the bracket twisting when the springs are under stress.

As I have a 1″ phonetic spacer the bolt that bolts the carb down sits at the top end of the stud. That means I couldn’t bolt it down without changing out the stud. However, the top of the stud was protruding enough to act as a locating pin to stop any twisting.

To make sure the single bolt holes the bracket in place I fitted a large washer. The down side was that the washer was overhanging the bracket and snagging on the throttle body. This meant that I had to grind two edges flat to align with the carb body and then finish at the bracket’s edge. You can just about see odd shape in this picture. A smaller washer would have been fine I just wanted max hold.

With the bracket held firmly in place the tricky task of fitting the spring ring to the carb throttle body. In an ideal situation you could do with a third hand to do it easily. You need to thread the screw through the rose joint, washer and the conical spring ring in that order.

With the cone in place and the ring under tension to the bracket, you need a larger washer to stop the spring ring coming of the end. I didn’t use provided lock nut, but I still wanted to lock the bolts in place. Nut number one labelled holds it all together, number two locks the two together.

From the pic above you will see that I found it easier to have the rod unscrewed to fit it all together. Below pics are from the back and front views.

Now I could thread the rod back onto the rose joint.

The other end was a simple case of push the bolt through the gas pedal bushing using the supplied washer and locking nut to hold in place.

Now all was connected up I could test the range of the movement and nothing was snagging. Of course I was now pumping fuel into the carb which probably wouldn’t start as it would be flooded.

I sat in the car to check the height of the pedal I wanted. I was quite low so it needed to be adjusted. This is a simple case of turning the rod which would pull the gas pedal towards the carb for a higher pedal, or towards the firewall for a lower pedal.

Hold the rod in place with a spanner on the flats and tighten the nuts to hold the set distance in place pointed with the arrow.

Last job was to grease the moving metal to metal parts and replace the air filter.

That’s it job done.

The test drive after was good and the throttle was much snappier and returned much quicker to idle. The result I was looking for, it remains to be seen if the strong springs are to much or not. But for now, they feel fine under my size twelve feet.

Bring on the first car show of 2021!

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Making Contact

I mentioned in my last post that the car had a bit of a starting issue which is now cured with a replacement Pertronix Ignitor system from Mustang Maniac. To avoid such instances again I have a back up plan.

The new plan is to have a set of old school points to hand in case of the electronic points breaking down. I ordered a metal tin, I was going to get an old tobacco tin, but decided against it and went for a nice new shiny one instead.

To hold the new points and condenser I got some chunk of polystyrene and cut it to size and pressed it into the tin. As the cable to the points was removed as I replaced it with the Pertronix set up. I made a new cable one with fresh connections and soldered while I was at it. I then marked out the shape of the points and cut it out with a sharp scalpel. I didn’t take any pictures at the time as I wasn’t sure how it was going to come out or if it even would work.

As the polystyrene is a bit brittle I leaves little bits everywhere so I sealed it with a good few layers of clean PVA glue. To stop damage to the components I got a thin foam padding and lined the cut out as well and stuck that into place. The wires were held in place my a shallow cut out groove. The last part was a set of feeler gauges to set them once they were held in place. The mini kit is then all held firmly in place and doesn’t move at a all. Just to be sure I added a little cut out to lay on top.

The lid has now got a printed out label (along with a spare sticker I had), for the gap setting in case I have to use the kit. Even if the points only last me enough mileage to get me home in an emergency – then it’s gob done. I can easily replace the the points with another set which costs less than shop bought sandwich!

The tin looked a little plain on the outside so I have ordered a little Ford Parts sticker to go on the top.

Under the hood I decided that I wanted to replace the HT cable tidies or clips. I wanted something a little more meaty rather than the thin plastic clips. I ordered online a set of v8 plug clips for the 8mm cables I have. There are two four hole, 2 three hole and two hole clips one set for each side. These normally go by the spark plugs to keep them neat and tidy. As I already have a nice polished cable set holder, these were going to be a little more visible.

Me being me wasn’t happy with the finish of the screw heads, they were a bit dull and cheap looking, not how I like them to look.

The next step was to get my trusty ol’ Dremmel out with some metal polish and the appropriate felt buffing attachment. A simple case of a little polish and buff over, they came out nice and shiny.

The before and after is quite obvious and now up to my OCD standards.

Fitting these style of clamps is very simple, it’s just a case of clamping the two halves around the cables and screwing together.

Will anybody notice the difference? Probably not, but I know they are there. They also do the important job of keeping the cables neat and tidy and routed where they need to go cleanly and out of the way.

Following on from the last post I have been asked if I had the fitting instructions of the Pertronix II Ignitor kit. I do and I have added the PDF file here.

A short little post, but I’m just looking for things to do now. I need a car show or two to get me out of the house and some fresh air and a change of scenery. Already this year 2021 we have had two car shows cancelled and it’s only January. 🙁

Keep Safe & Take Care.

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2021 Off To A Bad Start

Over the course of the Holidays and various forms of tiered forms of lock down that nobody really adhered to, I took my Mustang out. Now to be within to rules I took the car out to place where I could exercise after parking the car up. It just so happens that the car was parked in a pretty good place to take some photos while I was out exercising. There was nobody about, the odd car now and again going past, that was about it.

The garage was opened and the dust cover removed and placed on top of my tool chests. Excited to see the car after a number of weeks I got in and started the car, well tried to start it. The car was turning over fine but it didn’t fire up. I opened the hood and had a general look round under there. Fuel filter, yep fuel in there. I took the air filter off and checked the carb was squirting fuel, yep it was. After putting the bits back on I jumped in the car thinking it was just standing time issues. Turning the key the car started to turn over again, still but no fire up. Now I could smell fuel quite strongly, so I decided to leave it for a few minutes with the hood up to evaporate the fuel a bit. As it was getting late in the afternoon it was worth one more try before I give up and look at it properly another day. Third time lucky? She again spun over the crank slowed down and “BANG”. The backfire sounded like a grenade going off in my garage which made my ears ring, timing was obviously out to ignite at the wrong time. The car was running now a few seconds of really rough idle then it settled down to a smoother choke running. I backed the car out OK and drove of fine. However, there is a lot more to this story a little later…

The pictures:

I parked up and took some pictures before my little walk somewhere different. It just so happened where I was parked up would make a good backdrop. I took over 200 pics that afternoon, but this little selection are my favourites so far. I even done a black and white variation on a few of them. The pictures are variations on angles and lighting etc.

The next couple of photos I tried to start of with colour on the right and gradually fade it to black and white on the left. I played with the contrast to make the bottom one more antique and faded too. It sort of works I think, let me know if I hashed it or smashed it! I may even do some sepia variables as well.

The Journey Home.

I got back into the care and started the car, eventually after a few seconds it did start, but it was unusual to take that long. The drive back was about ten minutes and were not right. I got a few hiccups under mild acceleration from a standstill and the odd flat spot on a 40mph straight. I can’t deny that I was a bit worried. The car was parked up in the garage and covered her up with a nagging feeling in the back of my mind.

Next day I went out to the garage to just start her up. Turn of the key and the car spun over, then over and over. I tried to start her a number of times and smell of fuel was quite strong. I had a problem that was evident.

I sent Adam a text at Mustang Maniac to ask for a little advice when he had a moment. Adam being the kind soul that he is told me to get to my tools and he would call me back in a few minutes when I was ready. To his word he called me and talked me through some tests to look at with him over the phone. We swapped out the new coil with an older one that I had with the same result of spinning over with no fire up. We swapped over the coil HT lead to the distributor after testing with my multi-meter Ohm settings. Nothing. We then earthed out the coil HT to the engine to see if a spark jumped over to the engine. How did I manage that? Simple I talked sweetly to my wife who came out for a couple of minutes to turn the car over for me.

The diagnosis was narrowed down to the Pertronix ignition sensor which has gone to the great scrap yard in the sky! I needed a new one, it was a simple as that. Adam said he would get one out to me via mail ASAP as their location was in a high tier restriction for Covid reasons.

The next day my courier turned up with the part. I took a drink along with the part into the garage, unlocked the tool chests and settled down for a few hours. The distributor cap was removed and the single screw was removed the Pertronix sensor. The downside was the wiring loom had to be cut open to expose the wires for the sensor.  The fitting of the Pertronix sensor can be found here.

I done a rough fit without the neatness of wiring loom and connected up ready for the start up. I got in the car and turned the key. The car fired almost instantly and run smoothly all the way to the choke coming off. I let the car cool down and got back to routing the wires back into the loom and neaten it all back up again. A couple of hours later the work was finished and up to my own self imposed high standards. The aftermarket part is now looking like part of the stock loom again and I’m happy. I need to take the car out for trip to make sure everything is still as it was. But, as we are in a current national lockdown that is out of the question right now.

All that remains is for me to thank Adam at Mustang Maniac for his time, even though he was officially “Closed” over the holiday season. I needed the part and I paid for the next day courier service from his WebShop. I was offered the multiple choices of delivery and the costs options. Normally I would drive and pick it up, and it’s also a good excuse to catch up for a chat with some friends. There is a an advantage of being a loyal customer and personal friend with a Mustang parts supplier, who will help go out of their way for you when you need the help.

Since I refitted the new part, I have been on a number of forums about the Pertronix Ignitor series. It seems that I was a lucky boy after all in the fact I got home at all. Most of the time these units are absolutely fine and last forever and a day. But, if you get a bad unit they just stop dead. You could go down the road, pull out of a junction and it stops dead in the middle of the road as one person reported and that’s it. The same symptoms I had – no restart. I had issues where I had a cut out which progressively got worse to the point it didn’t start again. Now I intend to get an old school set of points and condenser to carry with me as an emergency get me home kit. If the points burn out after a few miles due to the hot coil 45,000 volts with 0.6ohms I won’t mind. As long as I get home they are cheap enough to replace again.

My 2021 didn’t start very well, in more ways than one. It could have been much worse of course, I’m just lucky it was a simple problem to replace. Onwards and upwards I guess.

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Merry Christmas

Just wanted to say to all my readers and visitors:

Merry Christmas & much better New Year.

Keep safe everybody and lets look forward to a 2021 being a normal year. But the way things are looking at the moment – that could be wishful thinking!

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Feeling A Bit Dizzy!

On my last post (rather a large post), I explained the critical settings of the spark plug and the benefits of quality ignition leads. That’s all well and good, but if you don’t have the correct pulses or power going down those leads at the right time then you will have problems. While I was checking and replacing spark plugs, I decided to strip down and rebuild the top end of the distributor.

Firstly what is a distributor?

A distributor consists of a rotating arm or rotor arm inside the distributor cap, which sits on top of the distributor shaft. This shaft has an insulated body to the vehicle’s ground or earth. The distributor shaft is driven by a gear on the camshaft on most overhead valve engines, and attached directly to the camshaft on most overhead cam engines. The distributor shaft usually also drives the oil pump. The metal part of the rotor contacts the high voltage cable from the ignition coil via a spring loaded carbon brush on the underside of the distributor cap. The metal part of the rotor arm passes close to (but does not touch) the output contacts of the distributor cap which connect via high tension (ignition) leads to the spark plug of each cylinder. As the rotor spins within the distributor, electric current is able to jump the small gaps created between the rotor arm and the contacts due to the high voltage created by the ignition coil. The voltage then travels down the HT leads to the spark plug where it again jumps a predetermined gap to ignite the air fuel mixture in the cylinders providing drive to the crank and thus power to the wheels via a transmission. (In a nut shell description.)

The principles are the same for a 4 cylinder, i6, v6, v8, v10, v12 etc. The rotors may travel in a different direction (clockwise or counter-clockwise), the number of leads on the distributor cap may be more, the firing orders will be different etc.

To show those principles of the spark, here is a simple 4 cylinder diagram with points. A v8 just more of plugs, more cap points, more cam lobes to open and shut the points etc. but you can see the idea on a less cluttered diagram.

Modern cars tend not to have points, but have electronic sensors to replace them. Latest technology has a sensor on the cam shaft which fires the spark plugs without the need for a distributor or even a coil, as the power for the spark is handled by ‘coil’ packs which are mounted on top of the spark plug lead fittings.

This post is a going to be a very cut down version of the whole process I have documented. The full rebuild with all the photos, explanation step by step can be found here. I will only be covering the Pertronix ignition process on this post, but I do cover the points process or refitting and setting as well on the full walkthrough.

* Disclaimer (just in case): If you are in any doubt on your ability to try this – DON’T. Get it wrong you and could damage the insides of the distributor, the car wont start or run properly. This is a guide on how I done it, I can’t held be responsible for your actions.

Dismantling:

First thing is to make a note of where the HT (spark) leads go and to what cylinder. Take a few photo’s if you’re not sure, label the leads up with a marker or sticky label of some sort. If you look closely the top of the Mustang distributor caps it has the number ‘1’ on the top, this is where you plug the lead for cylinder one. The diagram below right is for the firing order of 260/289/302 with a standard cam. Check your manual if you’re unsure.

Take the leads off and unclip the front and rear retaining clips to release the cap. The rotor arm can now be removed and the small usually oil soaked felt pad under it can be removed. Both my rotor and felt pad needed to be replaced.

Depending on your set up there will either be a set of points and condenser picture below left, the points gap is covered on the full process here.

An upgraded set of electronic points as mine (below right) will be set to the manufacturers recommended gap, more on that later once the rebuild is completed.

I removed the electronic set up, but once the condenser and points are removed (above left), the principle is exactly the same for dismantling and re-assembly up to the fitting of the Pertronix or points and condenser.

My Pertronix is held in place by a single screw at the bottom of the shoe which also pivots at the top where the original points screw would have held the top part of the points. Then remove the black sensor collar.

Disconnect the vacuum pipe to the front of the vacuum canister which goes to the carb. Check for any leaks or cracks on the pipe if you find some replace the pipe.

Next there is a metal lever that goes into the distributor (which will now be known as “dizzy” from now on). There is a tiny clip that holds the bar onto the pin. Remove the clip very carefully and make sure you don’t loose it. Remove the vacuum can from the dizzy.

Check for signs of perishing on the diaphragm on the inside. To check the function of the vacuum you can suck the can from the front and you should see the arm move towards the inside of the can, repeat a few times. If all is good you can clean it up and keep it safe, if not replace. Next remove the screw that holds the earth strap to the lower dizzy plate.

Next to the cam lobes there is another e-clip at the top of a pin. This holds a washer and under that a fairly strong sprung washer. Slip a small flat ended screw driver and gently tease it away. If you’re not careful it will ping up and be lost in the depth of the engine bay. Remove the washer, sprung washer and keep safe with the e-clip.

With the washer and spring washer out the way, you should now be able to lift the plate up and lift it up over the lobes of the cam.

The lower plate is now only held in place with a single screw the opposite side to where the cables come into the dizzy. Undo the screw and remove the lower plate.

Removing the lower plate there should be three raised points which separates the upper plate and should be smooth. I noticed one of mine was loose so I removed it then re-stuck it back on later.

With the lower plate removed you can now see the advancing weights and springs.

NOTE: The springs are different tensions. The one has less tension and and allows the weights to swing out under rotation to advancing the timing. The other spring is stiffer and at certain centrifugal force this spring takes over slowing down the advance. The larger and stronger spring is a loose fit to the anchor points and is normal.

On top of each weight there is again a an e-clip. Remove with a small flat ended screw driver and make sure it does not ping off. Make a note of which weight goes where and repeat for the other side.

Keep them separate or mark up a piece of paper and lay them on the paper so you know which pair go together and if they are the 13deg weight side or the 18deg weight side. Without taking the whole dizzy out this is about as far as you need to go.

You could possibly remove the springs, the two springs making careful notes on what one goes where. I decided against that just in case I stretched a spring putting it back on. This would have a detrimental effect on the timing and advance. My springs weren’t to bad so I decided not to chance it.

Now you need to clean the inside and remove any old dried grease and debris. Don’t go mad in here with the fluids, use just enough to clean. I found carb cleaner is good, and also sprayed onto a cotton bud to clean the springs and surrounding area.

You can move the move the weight plate with your fingers to clean parts that are partially covered. Don’t go mad with forcing open of the springs, you don’t want to stretch them. Make sure there is no bits of debris in the bowl or trapped anywhere.

The bowl should now be clean of all debris and old grease.

Assembly:

I started with the weights. take each weight and either clean with a degreaser or similar, or take some ‘000’ grade super fine wire wool to take the roughness of the weights.

Make sure that NO wire strands are left on the weights or fall into the dizzy bowl.

I used a small punch to wrap a little wire wool around and then clean the inside of the holes. You are lightly cleaning – not reboring the hole. Also clean the clip, any rough edges or rust could impede the movement of the weights.

With the weights and clips cleaned it was time to fit them back to the dizzy. You will need some proper lubrication. I researched a fair bit and the general recommendation is an engine assembly grease. Light smears not huge blobs!

If you examine the weights it easy to see where the wear marks are, apply a little grease to the weight. wear points and into the holes. Note that the whole weight doesn’t need greasing, just the hole, outside edges, the top where the clip holds it in place and the underside where it rests on the pin base.

Place the weight over the pin and lower it into position. There may be some excess grease, but that can be removed later. Make sure the weight is free to move and rests within the cradle. Apply a film of grease to the clip and place onto the weight.

You need to press the clip onto the post into the recess. I found again a small flat headed screw driver would do the trick. It can take a few goes to get right. Just make sure it doesn’t ping away. With both weights and clips in place it should look something like this.

Lower plate needed some love in respect that the plastic/nylon stop had worked a bit loose. Both the front and the back of the lower plate was cleaned with fine wire wool. You can see the slide pads are just hot pressed into the holes of the plate from the factory. With the plate now repaired I cleaned the yellowish and two red pads of the old grease and debris. I took some 5000grit and then 8000grit to remove any rough parts. Not sand it down, but more of a polish. Check the vacuum post has no wear and burrs.

Again make sure NO wire wool or cleaning material is on the plate before refitting. Place the plate back into the bowl area to cover the plate with the post side facing upwards. Align the hole and screw into place.

Take your assembly grease on a cotton bud and apply a film over the plastic pad areas and the post.

The upper plate may need a clean with wire wool or degreaser depending on the state of it. Pay attention to the brass bush which sits on the post of the lower plate. Brass is a soft metal and you don’t want to create a problem so be careful not to damage it with the small punch, degreaser with fine wool. Remove any burrs on the top side of the bush to allow the sprung washer to move without snagging.

On the underside of the upper plate you can see where the plate has moved across the slide pads over the years. Apply a film of the grease on these areas and into the brass bush and the vacuum post.

Place the upper plate onto the lower plate, locating it via the brass bushing. make sure it’s free to move all the way. Clean the components that hold the top plate to the bottom plate. Top washer, sprung washer and the e-clip all need to be clean and smooth in order to not snag the movement.

To refit a further film of grease over both sides of the of the sprung washer on top of the top plate brass bush with the curled edges facing up. Top washer with grease applied on the top and bottom, place the washer on top of the sprung washer.

Next refit the cleaned up earth strap for the top and bottom plates.

On the Pertronix setup, wipe over the plastic collar and slip it over the cam lobes with the recess facing upwards.

With the vacuum advance module clean the arm at the back and apply a film of grease on both sides near the hole and in the locating hole. The vacuum module can only fit on in one way following the curve on the outside of the dizzy.