The One to End It All
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Yellow Cosmoline? What is that. Sorry, newb question.
Borrowed from the same factory they made mosin nagants at
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Yellow Cosmoline? What is that. Sorry, newb question.
Cosmoline is a sealant / rust proofing that was applied to engine bays of E30's during transport. For the short duration it was on for transport no discoloration is usually observed, and dealers were supposed to wipe it out of the engine bays and apparently there was even a bottle of mineral spirits shipped in the engine bay to do so. Most dealers did not, and after the vehicles start seeing heat and use the sealant yellows and hardens, becoming very difficult to remove.
Circa ~2005 BMW was still shipping cars covered in a heavy wax coating that was pressured washed off with high heat water.
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I forgot how much fun stripping seam sealer was! -
Pretty sure you’re correct. There is a stock “proportioning valve” on the main run to the rear line IIRC
Not sure about e30s, but the “proportioning valve” on an e21 applies the same pressure to the front and rear up to a certain pressure, and then biases after that. The intent is that during light braking, the rears get activated to even out brake wear and keep rust off the rotor... er, drums.
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It's uncomfortable how easily everything comes apart on this thing... Parking brake lines running into the chassis came out without even pulling
Tossing in riser bushings and new trailing arm bushings, rebuilding and painting the brake calipers, repainting everything, installing new brake lines, and putting it back in without a diff or axles (current ones lack grease, and diff is wrong for my application)
Progress, not engine bay though, which I'm waiting for some warmth from the elements before painting.
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It's uncomfortable how easily everything comes apart on this thing... Parking brake lines running into the chassis came out without even pulling
Tossing in riser bushings and new trailing arm bushings, rebuilding and painting the brake calipers, repainting everything, installing new brake lines, and putting it back in without a diff or axles (current ones lack grease, and diff is wrong for my application)
Progress, not engine bay though, which I'm waiting for some warmth from the elements before painting.
Refinishing the rear subframe is something I would like to do in the future. RTAB's, subframe bushings, powder coat the frame and the arms, and change the seals on the diff. I just need a place that the car can be up on stands for awhile.
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Summer out here makes it hard to work on cars when there are so many awesome other things to do!
Finally laid some primer down in the engine bay -
Seams sealedHoping to shoot paint Saturday or Sunday
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Considering the limited quantity of prep that was done on this I'm pleased with the way it turned out.
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