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On 24 Sep 2004 at 8:12, David Sanderson wrote: > Thanks for the offer to rebuild these suckers. I have rebuilt the > calipers on my Porsche and know that doing a good job with the > original parts ensures great brakes. I have posted some photos of my > calipers and the master cylinder for you to look at. These pics are > at: > > <http://www.hkin.educ.ubc.ca/sanderson/Personal/Brakes/Brakes.html> > As you can see, one half of one caliper seems completely frozen. I > have been unable to get the piston out. And the others were tough as > well. Let me know if you think these are salvageable and then I can > figure out how to take you up on your offer. I avoid taking the caliper halves apart, but only because it's an extra step and it's impossible to remove pistons once this has been done. The calipers you have here are the good OE style calipers, so they are worth rebuilding. They will have 42mm pistons, rather than the 40mm pistons that come in the currently available type 1 calipers. You have at least 1 piston that will probably need to be replaced; I can't tell for sure, but it looks like there are deep rust pits in its side. I should be able to replace it with something that is used but much better. You must have missed my post a couple of months ago about the pump I finally made which will get ANY frozen piston out. ;-) Did the bleed valves come out okay? That can be the hardest part, and is the only reason that I would take a caliper apart. > And what can I do about replacing the seals on the master cylinder. This is > from the '68 and I like the dual circuit aspect and so want to use this on > the car. Can I get these seals or do I just look for a rebuilt one? The original 68-9 MC has an aux cylinder underneath it. These are best discarded and replaced with a good later version. Yours is clearly a 72-3 version, but I can't tell the brand. If it is an ATe MC then the caliper kit is still available for it. If it is a FAG, then it can be rebuilt if the rear piston is machined to take the ATe seal. I can do both, but I charge more for the FAG MCs because of the extra labor. They are $45 or $50 to rebuild. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~