rear brakes...

Jerry39218 · Posted: Thu Sep 25, 2014 4:13 pm Post subject:

Looks to be 65+

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Jerry39218 · Posted: Thu Sep 25, 2014 4:14 pm Post subject:

No weep hole tho

Jerry39218 · Posted: Thu Sep 25, 2014 4:15 pm Post subject:

Now, will it be a bad thing to install this cylinder or do I need to find one with larger ends?

Jerry39218 · Posted: Thu Sep 25, 2014 4:23 pm Post subject:

forgot one

Now, Master VW guy, confirm what I have please? Very Happy

EVfun · Posted: Thu Sep 25, 2014 4:41 pm Post subject:

If your rear brakes are 1965-1967 you cannot use 1968- up wheel cylinder as they are for wider brakes. The older brakes are 30 mm wide, the 1968 up are 40 mm wide (same as the front.) The difference is the machining of the backing plate seating area. The late brakes are better for a buggy, but wide 5 drum options are limited.
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Jerry39218 · Posted: Thu Sep 25, 2014 5:47 pm Post subject:

weasel_ugs · Posted: Thu Sep 25, 2014 5:54 pm Post subject:

The 69 wheel cylinder will stick out too far and brake shoes will not set correctly and the wheel cylinder may contact the drum.

Jerry39218 · Posted: Thu Sep 25, 2014 6:35 pm Post subject:

EVfun · Posted: Thu Sep 25, 2014 7:17 pm Post subject:

Jerry39218 · Posted: Fri Sep 26, 2014 3:56 am Post subject:

Ah, gotcha and I wouldn't see this until I had it mounted.

I have a 65 cylinder coming today, but it doesn't look like what is on there already... and I have access to a 67 from a guy down the road if I need it.

I think we've determined that it's NOT a 64, so hopefully this 65 cylinder will work, even tho it doesn't look like it hah.

Will post an update this evening. Thanks again for everyone's help Smile

VOLKSWAGNUT · Posted: Fri Sep 26, 2014 7:43 am Post subject:

HOLD IT!!!!!
Looks like 68 backing plates.... has has the backing plate adjuster and inspection holes.
If they are IRS backing plates... may not have the weep hole... but if used with swing axle it needs them.

Pull the cap to match the weep hole and drill the backing plate.

That also means you need 68 up brake parts.

Another hodge podge set up...

.
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aka Ken {o\!/o}
Its your vehicle- stop askin' for approval-do what YOU like for cryin' out loud
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Its about the going not the showing
Rebuilt to drive not decorate
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EVfun · Posted: Fri Sep 26, 2014 8:11 am Post subject:

Good catch! I wasn't even thinking about that backing plate detail as an identifier. I was simply relying on the measured shoe width. Of course, previous owners could screw that up too.

Next question, does this buggy have wide 5 drums or 4 lug drums?
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Jerry39218 · Posted: Fri Sep 26, 2014 5:00 pm Post subject:

Ok, the 65 cylinder worked fine.

has GM drilled drums. 4.5" 5 lug.

Took me a bit to get the drum back on, had to remember to back off the adjusters then readjust after bleeding.

I have more pedal travel than I would like, but as the rear seals, bearings and who knows what else needs to be replaced, I'm just gonna do a complete brake overhaul over the winter.

Test drive worked wonderfully tho... stops on a dime, ebrake works great now too. And that was only with one side lol.

so you're saying that's a 68 backing plate for an IRS? I didn't think that would match up to a swing... guessing I need to just go with a complete 65 setup backing plate and all...

Jerry39218 · Posted: Fri Sep 26, 2014 5:23 pm Post subject:

Ok, disc conversion for the front... lot less $$

I haven't found a disc kit for the rear...is that not something that is done? or stick with drums.

Also, I've noticed that it does, in fact, appear to be an IRS drum setup, as the replacement parts I just came across look identical to what was on there and they specified for an IRS..

I'm thinking it has a swing, so it needs to be all put back to swing.... ?

VOLKSWAGNUT · Posted: Sat Sep 27, 2014 7:34 am Post subject:

68 and newer backing plates either IRS or Swing are the same.. except.. the weep hole isnt on some of the IRS (I think)
If you are happy with the rear brake setup... as I mentioned... a few back..
Clean the back of the backing plate and LOOK for the weep hole under the bearing flange.
If its there.. clean it out.. if it isnt.. drill it out to match the cap.

Yes many rear disc setups are out there..
You do not need front disc.. or IMO disc at all on a buggy.
They lock up and slide...easier than drums.
Sliding wheels are wheels that are out of control..

Drums are more than adequate on a buggy.

.
_________________
aka Ken {o\!/o}
Its your vehicle- stop askin' for approval-do what YOU like for cryin' out loud
Better to roll em' how you want and wear em' out-than lettin' em' rot out
Its about the going not the showing
Rebuilt to drive not decorate
WANTED: Local Eatin' Joints, Triple D for TheSamba contributions here http://www.thesamba.com/vw/forum/viewtopic.php?t=570510
Search "VOLKSWAGNUT" on YouTube since you cant watch a "certain" BELT change video round here
Usually and often edited

Jerry39218 · Posted: Sat Sep 27, 2014 9:10 am Post subject:

Cool deal... I didn't know that.

no, there is no weep hole, I will have to drill one then.

Refresh me...what precisely is the weep hole for?

VOLKSWAGNUT · Posted: Sat Sep 27, 2014 2:10 pm Post subject:

Jerry39218 · Posted: Sat Sep 27, 2014 2:30 pm Post subject:

Gotcha. Thanks.

That would explain the grease in the drum Wink

167luckycharm · Posted: Sat Sep 27, 2014 9:25 pm Post subject:

Jerry,
If you already have the IRS backing plates and matching IRS wheel cylinders, you may be able to run the 40mm wide brake shoes if your drilled drums were the 4-lug (130mm bolt circle) to begin with. Depending on the length of the splines on your axles, you may or may not need to add the spacer between the drum and axle nut. May be the right combination for correct braking bias for your car. Also check into the idea of running front wheel cylinders at the rear to offer more braking force at the heavier end of the car.
Good luck!
John Mr. 009
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