The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1968 C10 CST DRUM/DRUM Proportioning Valve Problem

Gromit · 07-26-2019, 11:19 AM

I was looking at the photo in post 6; and the OP's photo doesn't look as close to the exhaust manifold.

So it doesn't look good for my theory then.

But maybe still worth considering thermal expansion of the brake fluid as a potential cause to be ruled out if somewhere along the chassis or crossover the rear brake line or lines run too close to the exhaust?

07-26-2019, 11:19 AM	#17
Gromit Registered User Join Date: Jul 2015 Location: Central Coast, CA Posts: 500	Re: 1968 C10 CST DRUM/DRUM Proportioning Valve Problem I was looking at the photo in post 6; and the OP's photo doesn't look as close to the exhaust manifold. So it doesn't look good for my theory then. But maybe still worth considering thermal expansion of the brake fluid as a potential cause to be ruled out if somewhere along the chassis or crossover the rear brake line or lines run too close to the exhaust?