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I need a picture of the rear drum brake with cylinder mounted between the welded on bracket which extends to either end of the cylinder. The cylinders I ordered as replacements fit between the bracket but only if I remove the dust boots. Otherwise they are a mechanical precise fit between the tabs on the bracket. I wish I took a picture!! Arrrgh!
Happened to me too. I shaved a fraction off the lip of each cylinder with my bench grinder and replaced the dist boot. Just enough to clear. I have driven the car extensively since then including the track day at the corvette museum under hard conditions with zero ill effects.
Happened to me too. I shaved a fraction off the lip of each cylinder with my bench grinder and replaced the dist boot. Just enough to clear. .
Here's a shot off an original '64; have a complete rear end from the car, including 4.56 diff. The dated parts indicate a January car. Driven to about 1968, stored since. I can see a gap of about 10 thou between the boot and the bracket edge.
Here's a shot off an original '64; have a complete rear end from the car, including 4.56 diff. The dated parts indicate a January car. Driven to about 1968, stored since. I can see a gap of about 10 thou between the boot and the bracket edge.
This is what I had upon dis-assembly. I guess I have purchased the wrong cylinders. I had the part numbers confirmed a few times but maybe people have removed the bracket or changed the back plate over the years?
I like the story behind your car! 4.56 gears would be fun!
Yes I was in a hurry - fixed the picture...doesn't help much anyway as you can't really see your problem area. I have all the NAPA part numbers for my brake job if that will help...including wheel cylinders; that is -- IF they will work on a '64.
I sell in my store either Dorman or Centric wheel cylinders for these cars.
Dorman - W13387 & W13388
Centric - 134.64005 & 134.64006
If you can not find them let me know.
Joe
As an update, I was able to find my old cylinders. They are the same length as the ones I bought, but slightly smaller in diameter. The last guy had the same problem. There is a small cut in the boot from being jammed into the bracket. Those in Frankie's picture are definitely shorter. Will try to find some of those.
Joe, thanks for the part numbers. I have not looked locally yet. Do you have a price shipped to Mass. 01583?
Thanks,
Greg
As an update, I was able to find my old cylinders. They are the same length as the ones I bought, but slightly smaller in diameter. The last guy had the same problem. There is a small cut in the boot from being jammed into the bracket. Those in Frankie's picture are definitely shorter. Will try to find some of those.
Joe, thanks for the part numbers. I have not looked locally yet. Do you have a price shipped to Mass. 01583?
Thanks,
Greg
Why not grind a little material off the brackets instead of the cylinder and you could forget about it?
Why not grind a little material off the brackets instead of the cylinder and you could forget about it?
That would probably not be a good idea... 64 does not have any sort of proportioning valve. Proper operation of brake pressures front to rear is determined by the size of their respective wheel cylinders.
Get the correct cylinders front and rear and be done.
If the OP has switched to front discs, then the front to rear brake balance is changed, and I have no suggestion for that case.
That would probably not be a good idea... 64 does not have any sort of proportioning valve. Proper operation of brake pressures front to rear is determined by the size of their respective wheel cylinders.
Get the correct cylinders front and rear and be done.
Either you or me is confused on the issue. I take it his outer dimensions are larger, not the bore diameter.
Here is the NAPA invoice (part of the whole brake overhaul) from 2013....everything worked perfectly after installation and still does.
The cylinders are apparently the Dorman part numbers also offered by Joe above (plaidside)...
Here are the Dorman wheel cylinder that I just got in.
Let me know if this is OK, if not I have another set coming in this afternoon from a different manufacturer. It measures approx. 2 7/8".
Joe
I brought in another brand and they measure 2.816" without the boots.
Joe
Joe,
This is very helpful information. Sorry I have been off line due to business travel then tied up with family matters. I will measure what I have and take some more pics.
Those cylindrs you sent worked great. it was a tight fit but not so much to pinch or cut the rubber boot. Thank you for for hooking me up. I was ablr to swap them without dis-assembling the whole brake set. Pease post the part details for others that may come across this post.
07-01-2015, 08:24 AM
1964 rear drum brakes
