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Scrivyscriv's 1967 java green sunroof sedan (stock)
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VW_Jimbo Premium Member
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Joined: May 22, 2016
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Location: Huntington Beach, CA
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PostPosted: Mon Nov 28, 2022 10:37 pm    Post subject: Re: Scrivyscriv's 1967 java green sunroof sedan (stock) Reply with quote

scrivyscriv wrote:
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Did I mention how much I dislike stripping paint and cleaning beams? Yeah, it’s not very high up on my list of fun things to do on any VW.


Agree 100%! Cleaning sucks!
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Jimbo

There is never enough time to do it right the first time, but all the time necessary the second time!
nshaddox wrote:
Plus I tend to prefer these impossible projects that take way too much time. There’s no thrill in easy projects. Challenges are fun.

67rustavenger wrote:
GFY's Xevin and VW_Jimbo! Smile
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scrivyscriv Premium Member
Samba Electrician


Joined: October 04, 2011
Posts: 2483
Location: Memphis
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PostPosted: Mon Dec 05, 2022 4:13 pm    Post subject: Front brake drums Reply with quote

Measuring front brake drums

I forgot to measure my front drums during disassembly... three years later with my new wheel bearings in hand, I told myself “hey just measure really quick before you seat those new bearing races.”
Yup, both front drums are way out of spec!!
The max diameter, often referred to as the “discard” spec, is 9.113”, and both front drums measured out at almost 9.150”, or about forty thou beyond the limit.
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There is no practical safe way to use these drums. Although there is a safety margin engineered into it, using a stock brake shoe thickness here would result in overtravel of the wheel cylinder pistons. Even if I adjusted everything correctly and had good pedal, the wheel cylinder pistons would be too far out in the bore, which can end up in the piston getting stuck, or tipping sideways a bit and allowing brake fluid to bleed past.
Of course it would only show up during full brake application... when you would need brakes the most.
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Robert in Memphis
1967 Java Green bug thread
Engine rebuild thread
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