apitts73

are my vented disk rotors and calipers transferable to the 968? im trying to figure out which calipers i have...ive seen the post about the differences between the 3 sizes...but when i measure the caliper its only 10" from end to end and 6" wide. the rotors are 12". according to the post "Warning: Caliper **** Ahead"...the stock turbo calipers are 298x28mm...but when i measure mine they r only around 10"(254mm). i must be measuring the wrong way! they do look pretty large!

thanks again for any info

Dougs951S

I dont understand how you could measure wrong..its just a diameter measure across the center of the rotor. No way you have 10" rotors, even stock NA rotors are bigger than that.

admiralkhole

Wait.... Are you confusing rotors with calipers?

apitts73

i measured the rotors...they r 12" in diameter. its the caliper i cant figure out. i measured from end to end of the brake caliper and it was 10". i just went and measured again.....just under 10".

i must b measuring to wrong way!!

fejjj

Post a pic.

apitts73

hope this works...two pics of where im measuring from

apitts73

they are plasti-dipped in red...originally they are black

admiralkhole

The "3 different sizes" might be referring to the piston sizes in the calipers. '86 951 has 38/36mm pistons, '87+ 951/S2/968 have 40/36mm, and the M030 calipers have 44/36 (?) I think.

Dougs951S

the 298x 28mm you quoted is a ROTOR spec, for stock 951 brakes. What you have there are appear to be stock 951 calipers with most likely 38/36 pistons. They are meant to take a 298 x 28mm rotor.

fejjj

Those are NOT M030 calipers so you should be fine.

If you are doing a 968 Turbo build then you will want to upgrade to at least M030 calipers.

apitts73

look at the post..."warning: caliper ****"....#14 post on pg 1 of the thread........i think they are referring to the length of the caliper....i think!

apitts73

that makes sense....so calipers are measured by the rotor size??

fejjj

Calipers are measured by the piston sizes.

apitts73

ok...this is making sense to me.

are they equivalent to the 968 brakes or smaller than 968?

according to the **** caliper thread the 968 are same as turbo s.

fejjj

968 NON M030 calipers are same as 88 944 Turbo NON S.

944 Turbo S are the same as 968 M030.