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Old 10-07-2013, 03:12 AM   #1
Bradrcr
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Default WTF Happened to my Enkeis?

I've noticed a really weird buildup on my rims lately, and today I realized it's on only one (driver's side front). I reached in today to wipe off this 'sludge' and it peeled right off like plasti dip. I removed the rim and took this pic:



The white is the inner side of this burnt lining. I had a problem with the mounting of my Willwoods and I dragged my brakes for about 10 minutes. They got hot but we were able to pull them and fix them in a few minutes, so I'd guess they hit 300-400 degrees. In any case, I peeled the pieces that came off easily and wound up with this:



I pulled my other rims tonight to adjust my coilovers and I don't even think the other rims have a lining of this type at all. I could be mistaken, but they all seem like bare metal with just some brake dust on it. I'm posting this on Saab92x.com as well to see if anyone has any input, but these are the factory Saabaru 17s. I'm curious if I should recoat these with something? Do all Enkeis come with this coating? I did Google an Nasioc searches and I see nothing mentioning this lining, so I'm wondering if this might be aftermarket on jus one rim from a repair; the passenger rim that had the same dragging issue and seemed hit identical heat has no issues at all.
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Old 10-07-2013, 01:05 PM   #2
Bradrcr
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Update: looks like a small brake fluid leak is the culprit. Chime in with any suggestions, probably just gonna clean up the metal and coat it with some Duplicolor wheel paint.
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Old 10-07-2013, 01:07 PM   #3
cowboy_Rob
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Good luck getting it to stick. I don't know the specifics but I know it's very hard to get paint to stay once the metal has been exposed to brake fluid. It soaks in or something and makes it always want to peel
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Old 10-07-2013, 01:25 PM   #4
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Congrats. You've just discovered that brake fluid makes fantastic paint stripper.
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Old 10-07-2013, 07:05 PM   #5
Mr. Lin
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yeah it looked like someone took aircraft stripper to ur wheel
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Old 10-07-2013, 07:08 PM   #6
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That stuff is super corrosive defiantly want to keep it of aluminum
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Old 10-07-2013, 07:46 PM   #7
Bradrcr
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None of the paint on my wheel had come loose on its own, and the parts on the edges are not coming loose without some sanding at a minimum, so I'm optimistic the paint layer absorbed the brake fluid and my surface won't have serious adhesion issues. I picked up some Duplicolor wheel paint; I'll pin down the leak tonight, hit the inside of the wheel with some alcohol, maybe a light detergent, repaint, and I'll post my results here.
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Old 10-10-2013, 01:00 PM   #8
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Quote:
Originally Posted by Bradrcr View Post
Update: looks like a small brake fluid leak is the culprit. Chime in with any suggestions, probably just gonna clean up the metal and coat it with some Duplicolor wheel paint.
I would agree ... brake fluid can eat paint
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Old 10-10-2013, 09:59 PM   #9
Bradrcr
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Well, hunch was correct, here's my brakes:



I pulled the copper Wilwood washer for the brake lines and replaced it with the composite one from my stick calipers and it sealed up fine once I put the system under pressure. Cleaned up, bled, repainted and they're good to go.

I got some alloy colored VHT wheel paint, sanded down what I could on the rims (the paint/protectant left was VERY thick) and sprayed away:



The adhesion seemed to be fine, but there was some weird spots where it went over the bits of old paint, so I suspect they may have absorbed some brake fluid. In any case, I'm back on the road and I'll just keep watching for more issues.
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Old 10-11-2013, 05:31 AM   #10
Todd TCE
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A large part of that problem is that Wilwood calipers don't use banjo bolts and crush washers. The inlet fitting of the caliper is what's called pipe thread or 1/8npt. The only correct fitting to be screwed into the caliper is an npt to -3AN fitting for a swivel seal hose end. The reason it's not sealing is that you've cross threaded the caliper with perhaps a M10 fitting that doesn't belong there..and the casting is not machined for such a sealing surface anyhow.

What you should have is something from the top row:


Fix it? Maybe, maybe not.
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Old 10-11-2013, 10:05 AM   #11
LUMBERZACK
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What an ordeal, best of luck with the new paint.
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Old 10-11-2013, 12:35 PM   #12
Bradrcr
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Quote:
Originally Posted by Todd TCE View Post
A large part of that problem is that Wilwood calipers don't use banjo bolts and crush washers. The inlet fitting of the caliper is what's called pipe thread or 1/8npt. The only correct fitting to be screwed into the caliper is an npt to -3AN fitting for a swivel seal hose end. The reason it's not sealing is that you've cross threaded the caliper with perhaps a M10 fitting that doesn't belong there..and the casting is not machined for such a sealing surface anyhow.

What you should have is something from the top row:

Fix it? Maybe, maybe not.
Jeez, didn't realize that, I bought them used off another member and always wondered why the SS fuel lines I purchased with them were pressed right against the calipers. If they are rethreaded, the threading at least feels clean and my other caliper has never given me a spot of trouble, so hopefully the new washer is enough to correct this.
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Old 10-16-2013, 08:22 PM   #13
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The Wilwood bolt-on 's for subaru were not a good product,... They were simply a part number from another model that was adapted to the WRX, they tend to be not suited well to weight and characteristics of our cars

You may want to research this and see if that may have contributed to the problem. You'll have to dig deep because not many people have messed around with the Wilwood set since the early days 2002-2004ish
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Old 10-16-2013, 09:06 PM   #14
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be glad you didnt fling it on your fender as well. thats pretty cool looking haha
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Old 10-17-2013, 01:24 AM   #15
Bradrcr
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Quote:
Originally Posted by rubrduk View Post
The Wilwood bolt-on 's for subaru were not a good product,... They were simply a part number from another model that was adapted to the WRX, they tend to be not suited well to weight and characteristics of our cars

You may want to research this and see if that may have contributed to the problem. You'll have to dig deep because not many people have messed around with the Wilwood set since the early days 2002-2004ish
So far it appears that the washer swap has solved the problem. However, I haven't heard about any issues on the Wilwoods, and I've been happy with the brake feel since I've upgraded. Curious about the problems on our cars, could you clarify a bit?
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