IN1TROI

ok so i posted on brakes a few weeks ago about good bolt ons for my early 85 944, and i read that you might be able to put 2006 GTO Calipers and pads on an early model 944. Do you guys think that's possible?

ZR8ED

Doesn't appear to be common..heck I haven't even seen a GTO in years now, so not sure why you would want to put discontinued parts from one car to another discontinued car. Odd ball caliper/brake swaps do happen, but are usually attempted by people that have easy access to the parts to test fit them, and the tools/skills required to "modify/adapt to fit". If you have some kicking around, try bolting them on and let us know how well they fit, or how much "adapting" they need.

pa944red

Autozone has reman GTO calipers with lifetime warranties for $57 a side. They are a two piston design and if they bolt up, who wouldn't want that upgrade.

Let us know how you make out.

At $57 I might try it myself, if it doesn't fit you can always return it.

Tom

Van

The two bores in the master cylinder, along with the caliper, pad and rotor sizes, are calculated by the factory to provide a certain fore/aft balance. Personally, I wouldn't want to mess with that. I think it make much more sense to just rebuild the stock calipers. It's not hard and the rebuild kits from Paragon are under $20.

1987Porsche944WithRealLongName

What do people who install big reds do about this?

Also OP if I was moving to a different caliper I'd at least want it to be 4 piston.

morghen

i'm using 928 M030 calipers on 1983 924 master cyl and the configuration is the early X not the F/R like the late 944. Breaks work great, drove quite fast(read 260Km/h fast) and applied brakes hard often, never a problem.

Van

I don't know the answer to that... But, I'd think the proper course of action would be to put on turbo S brakes, along with the master cylinder and proportioning valve.

catamax944

I think i was the one that mentioned the 2004 Gto calipers. From my research it looks like they bolt right up and they take the larger corvette C5 pads that are almost double that of the 944 n/a. I didn't get to try them on yet so i can't confirm fitment. The rotors have to be about 300mm if i'm not mistaken and the biggest issue can be centering the caliper on the rotor.
In addition you will need to find an upgrade for the rears also . In theory it should work well with a late 951 master cylinder and a suitable proportioning valve needs figuring out.
A few issues have to be overcome but if successful this can be a very cheap brake upgrade for the n/a .

PS: the '06 Gto calipers have offset bolt holes to take larger 330mm rotors. Also the bolt size is different from '04 to '06 , not sure witch ones match the 944.
The '06 calipers are a very common upgrade for '04 gto owners , if you research this you will find out the bolt size and other details you might find useful

catamax944

Brake pad surface is more important than number of pistons and cost is sometimes more important than both.

IN1TROI

alright well what kind of pads should i get to just get a good small upgrade for my brakes because i do need new pads. I would like a little more stopping power too

MAGK944

Not even considering cooling there are so many variables to consider when swapping brakes, caliper piston diameters, pad sizes, rotor diameters, rotor thicknesss, bias, m/cyl bore, all these have an effect on braking performance. Apart from the na which has a relatively large rear rotor, all the others like to be hydraulically biased towards the rear anywhere between 18-45psi. What this means is the rear gets more braking until the bias is reached when it will even out front/rear. na's have bias built in due to the large rear rotor in proportion to the front rotor.

You could probably spend many hours figuring it all out (ask me how I know) or follow some of the great advise here and save yourself a headache. Lots of good brake upgrades have been posted, just search.

Van

What, exactly, do you mean by "more stopping power"? I have the stock brake calipers (but a racing pad) and stock rotors, and racing tires, and pull 1.2 Gs braking at the track. And, if I want, I can easily lock up the wheels. The point is: I have plenty of stopping power.

If you feel your brakes need an upgrade, get a set of stainless flexible lines, rebuild the calipers, put in fresh brake fluid and bleed the brakes properly (and the clutch!), then get a set of pads that suits your driving. For the track, I can recommend Hawk or Cobalt. I'll let other people make street recommendations.

Also remember - ultimately your "stopping power" is going to come down to tires, not brakes. What tires do you run?

JimV8

44 brakes are plenty. As was pointed out if you change the calipers then you must consider doing the proportioning valve too. I put big blacks on the front and changed the valve. I don't know the numbers off the top but was probably a 928 GTS.

hacker-pschorr

What kind of research was this? I take it you at least mocked this up with a test rotor? Which rotor did you find works with this setup?

Wow, Autozone re-man calipers. Have we really stooped this low around here?

Yup, never-mind the GTO parts probably weigh more (unsprung no less...) bolted on to a car that doesn't need larger brakes. That's not important at all.......

Thread over

Reimu

xschop(?) does adapters to fit various calipers on, usually cheap ones

big LS430 ones come to mind