Lemming

Those look fantastic.

jerome951

Van, that's cheating. ;-)

For me, getting the pistons out wasn't bad using compressed air, clamps, and blocks of wood. Getting the pistons to start square in the bores was the biggest challenge for me. Not wanting to damage a seal, I didn't use a clamp to reinstall but rather my thumbs. They hurt for days afterward.

Van, I replaced the dust boots on mine and they started to crack and fall out about a year later from the heat of running on the track. I'd say that if your old ones are usable to just put them back in. No guarantee the new ones will last any longer.

PorscheDoc

Lol, if they lack the common sense not to stick their fingers in the calipers when blowing a pot out, or to go from 0psi of air pressure to 90psi in a split second, then they deserve to get hurt, lol. Otherwise, you aren't going to injure anyone or send anything flying across the shop, lol.

Van

So, lots of you guys were right - compressed air was the way to go for doing the rebuilds. With the little wrenches I made, I wasn't able to pull hard enough (although the wrenches did help in assembling the 38mm pistons... for some reason, those were tighter than all the others).

I can't wait to try them out!

67King

Went through this a few months ago. Some of my pistons were stuck, and I ended up spending a fortune on replacing them. Just a heads up, Porsche sells 930 pistons without buying the whole kit as a replacement for the 30mm pistons - at the very least Paragon lists them as replacements for 951's. THEY ARE NOT THE SAME. They don't fit. They are machined differently, and they are slightly larger in diameter. But those few thousandths are the difference between fitting and not fitting.

Van, calipers look great! Will have to spend more time on my street car when I do them.

Van

Yeah, the 930 pistons have that step on the end, right?

Only the 38mm pistons were a bear to push back in. I expect the StopTech gaskets were a slightly different tolerance or something... Once I got the pistons in, they felt smooth, it was just hard getting them started. On the other 3 sizes, I was able to squeeze them in by hand.

gregeast

Good work Van, I dig the red "Iron Cross" spring retainer too

Scott H

Very good to know, I have a feeling I'll be doing a brake system overhaul sometime soon.

Crazy Eddie

Great Job Van
Those look great !! So great ... that the black looks as good if not better than the red !
I thought I remember someone telling me, that the StopTech really don't fit and that the only way, is to bite the bullet, and go is OME Porsche ...
That's great if those work ....
Nice small lathe ya got there
Regards
Ed

Olli Snellman

Brembo made several different pistons to same caliper body. For example 964 front calipers are identical to 220hp 951 caliper. Pistons in 964 version are different. Diameter is the same but height is not, they are shorter.