333pg333

Apparently these were meant to be Ti pistons?? Turns out that the prices I was quoted for a rebuild kit didn't include the pistons. Factor in say @$50 x 12 = $600 more for these. Seals $250. Labour more hundreds. ergghhh....

Duke

You're right, supposed to be ti. To little coffee for me still

Dougs951

Yea Ti with a ceramic tip.

you can get a seal kit for $30 a caliper stateside btw. PM me if you want me to buy a set and ship em to you

kont5u

Are the GT3 M450 pistons titanium with ceramic coating? I'm having my calipers rebuilt atm. Just left them to be painted. I already ordered new seals from Zeckhausen. These calipers are not cheap to rebuild.

zeusrotty

So what calipers are those?

kont5u

Same as the ones op has, as far as I understood. 996 GT3 my 04-. 996 351 432 30 / 996 351 431 30. Six pot front, four pot rear.

Dougs951

They should be a two piece piston. Titanium with a removable ceramic tip.

kont5u

Correct. They are two piece pistons. Just never knew they were made out of titanium.

333pg333

The calipers in this thread are 997.2 , not 996. The mounting bolt pattern is wider apart on the later version. I've been quoted $100 per 2 part piston so $1200 just for them....am now shopping for new calipers. This whole process has been delightful....

mikey_audiogeek

Frightening. New calipers are the fix here, for sure!

s14kev

Wow. Never underestimate the ineptitude of the home mechanic. Who sold those?

333pg333

It wasn't a shop.

Duke

A good thing about race calipers is that you also save weight. My AP Racing 6 piston calipers are 400 gram lighter each than the 4 piston 944 Turbo S caliper. And I don't remember the 996/997 monoblock calipers to be any lighter than the old Porsche/Brembo calipers.

URG8RB8

The NASCAR boys use similar if not identical AP callipers to Duke's on the two road courses and the short tracks. I thought it was very interesting to see on a 951.