Messages

I've been kinda playing around with GM distributor cam pieces.
I have seen pieces with a 7 initial # followed by a degree #.
732 for example
32 = 32* (degrees)
532 for example
32 = 32* (degrees)
when we see a 7 or a 5 preceeding the numerical; what does the 7 & the 5 designate?

You should be fine.
If you are in a points restoration event being Judged,
Then I would suspect that your lines be as similar as originally made.
Your color coded ends will need to be correct, in the same way as original if you are being judged.

I took my original lines in to be replated.
The fittings were then "pickled"; a term for dippIng the ends to replace those with the correct coloring.

I did mine over 13 years ago.
Not sure who does this process today. 

[used & damaged]

Hey all...

I just built up my 3'rd M20.

I purchased this unit decribed as being rebuilt by a very reputible rebuilder.

I found many used & damaged items inside when we popped the side cover open and after initial teardown.
Needless to say, I was not very happy!  
The rebuild cost me, but after proper inspection and replacing with new parts,
I now have a really sweet M20.


Bad parts :
Cluster shaft badly pitted and worn
Countershaft Roller Spacer/Washers for some reason were indented by the roller bearings
Synchros were used
Clutch Hubs were both bad
Speedo Plastic gears were worn and broken
Maindrive Bearing was used
Worn engagement teeth
Reverse, 3'rd, and 4'th had damages to the actual teeth tips
Tail Housing threads had helicoils; typical
Main Case ended up being OK after many hours of detailing


1'st and 2'nd gear both were OK, oddly.
I ended up replacing all of the above parts with brand new pieces.
Some Italian, some typical rebuild parts.

I am going to post up a few images of the 3'rd gear and 4'th / Input shaft.
Someone before me owning this M20 ground down some of the engagement teeth.
Interestingly..
Both engagement ground locations were at 6 & 12 o'clock postions.
I ended up replacing both with Italian Gears.

Can you folks tell me why someone did this to these gears?




















The M20 completed; sorry for the fuzzy image.

---> RPOZ11, is this the original screw?  What is the plant and build date of your car?

Screw : YES

March 1969

Found another shot of my M20.

Having some stands made out of aluminum.
Hope to have those posted soon.

I originally replated this screw but as you can see,
over the course of time,
It has began to build up some surface rust.

Hope this helps....

If I find some time later I will see what mine looks like & let you know...

Here is my M20 rebuilt.

My car is L529677 also a LOS 04C build, Very close to the one for sale. <529407>

For comp,,,,, My tag = M044 His = J480

The Chassis Broadcast Copy (Mine) does in fact Have Z11,,,,,,"5Z11AA", "5Z87KM", "5Z720BA" typed in below all the data blocks.

Jim

Thanx for sharing this info.

:-)

So would either side cover pass a judge's inspection?

Any commentary on the casting times in front of the caster part number?

Was there only one factory casting for the Muncie assembly division, or

Is there any timeline as to when the changes took place?

Van Nuys vs. Norwood?

Well, That is exactly what is desired in establishing this here.
Looking for input from knowledgable people who can contribute to this thread regarding the details of restoration, assembly, and defining the minute points of these Muncies.
I see fonts present on what I have as core side covers.
4/7
1/6

Ive know of a guy on the west coast who does these.

If you like , the next time I see him I will get you his number & info.

Been doing several things to get my M20's correct.

However, I do have 2 questions...

1 : How do we decipher the clock date time stamping on these?

2 : I am at the pointe of trying to decide which side ciover that I have should be correct for a January - March Van Nuys build.

I have 2 here with different font sizes.

The first image has much less casting flash cracks vs. the second one.

What are the differences between the 2 castings and why???

Here are the 2 that I have to select from :

[RSC]

Well, so far... my walk has determined some of these Bolts.

RSC , RBW , TR Bolts on the tailshaft housing.
The Tailshaft housing has 3 larger diameter bolts on the at 5, 6, and the 7 o'clock positions.

SBC , RSC , and TR for the side cover bolts.

TR ( for now ) for the front retainer.

RBW and L for the speedo gear tab.

Now, I just had my 1969 M20 rebuilt for my coupe.
Everything we had for it was TR bolts and the speedo gear tab was an RBW bolt.

The Drain Plug is a W.

I pulled out my PaceCar's M20 and I have a Metal ID tag of 3950356.

Would like to ask others here to contribute to this thread to gauge any variances across the years.