944 turbo caliper reapir

[Hoghead]

I now have found several sources and it looks like one can do all 4 wheels for 300.00 - at least I think so and tomorrow I should have all the details. I live in Thailand so the time difference and dealing by email is a bit of a delay

My 88 - 944T calipers employ 36/40mm pistons in the front and 28/30 mm in the rear, using the scraper ring design. I have not looked for the rubber boot design as shown by wrenchride

Will report all my findings, prices, contacts etc.

My buddy here in Chiangmai is the local speciality powdercoater, and he uses phosphoric acid to strip paint.

Robert

[wrenchnride247]

hoghead, make sure that acid doesn't remove the black hard anodizing in the piston pockets. I would test something else that is hard anodized... just to be sure. If the anodizing is removed from inside the piston pockets, and you rebuild your calipers, there is a chance the heat from using the brakes can cause the pistons to stick. The anodized finish can be powder coated. If your calipers still have factory anodized black w/clear coat, it is very easy to remove just the clear coat, and leave the anodized finish.

I would be very interested in your findings on seals (and of course Zen too). I might need some for future projects .

[Hoghead]

I was not too clear on the phosphoric acid to strip paint.

His preferred method for cleaning is to blast with very fine steel shot. I imagine this would remove the anodised finish and will go learn more about this today.

Another day without an answer on the caliper repair kits.
Will advise.

Just ordered a 5 point Kafer brace from Lanner so it is all coming together

Thanks for all the help.
Robert

[Hoghead]

No luck at all in finding 944T caliper repair seals only. All I can find are the kits with pistons at over 1000 USD for all 16 at Pelican Parts.

FDV in Germany looked promising, however after a lot of emails back and forth the result is pistons and seals only at 516.00 Euros plus freight for all 16.

I still find it difficult to understand why these are so special, however may just go to low mileage 996 big blacks to make my life easier.

Robert

[matara]

I found this procedure for replacing the seals on the twin spot calipers. Great way to see whats required, but I'm not having any luck finding seals either. My pistons look fine, the dust seal is a little ragged, and I would like to just find the dust seal?

http://vista.pca.org/sch/tech_articl...er_rebuild.htm

Cheers

Steve

[wrenchnride247]

Thats a good article on piston removal. My method was a little different, since they were getting powder coated. I didn't remove the pistons until the caliper was split in two halves. Then I just plugged all holes, but one for air. Next I wrapped a shop rag around the half (to catch pistons), and eased the air pressure on until they popped. This can get dangerous fast , if not done carefully.

[Doogie S]

Especially when you are looking over top of the caliper to see why they haven't come out of hte bore yet!


Doug