944T calipers on my 911

[Glasgow 911SC]

Originally posted by Bill Verburg
The hard part is doing it cheaply

That seems to be the case with anything 911 related

and remember, I get confused easily

[911-32]

Originally posted by palle7688
Chris, thanks for posting, gives a better understanding of how you have done yours.
I'm still researching.
Acc. to my wrench it's better/easier to use the '89-'93 C2 298*28(or newer/bigger) rotors which installs to the outside of the hub. This requires the hub to be be milled/turned a little to fit inside the rotor. This is what Beepbeep (and InstantG) is doing.
This way it's not necessery to file the lower A-arm and saves you the spacer behind the inner wheelbearing.
If I could use 996 calipers with C2 rotors the only special manufactored part would be the adapter, now we are getting somewhere!!! :-)
See on attached pic. from Beepbeep, hub in background is done.

I really like this idea - using the 964 C2 disc over a machined hub. This seems to be the perfect intermediate upgrade for those who do not want the extra weight or expense of the full 930 upgrade.

My calipers arrived yesterday. They are 964 C2 calipers which have the 2-pot rears rather than 4-pot. I am wondering if there is any real benefit in using these rather than the 3.2 rears. Anyone know what the diameter of the 964 2-pot pistons are? Will the bias be way out if I remove the PV and run 3.2 rear and 964 front? It seems a physically bigger caliper than the 3.2 but I have barely had a chance to open the package yet so meaningful comparisons will have to wait.

Pictures to follow at the weekend.

Richard

[KTL]

Originally posted by 911-32
Anyone know what the diameter of the 964 2-pot pistons are? .................Richard

2 piston 964 rear calipers have a 44mm piston diameter. Courtesy of Bill Verburg's Brake Page

[911-32]

Many thanks Kevin, I looked at Bill's homepage but not his Pelican Page - my bad.

As the 3.2 rear caliper is a 42mm piston it seems that there is little benefit to changing to the 44mm piston C2 caliper (once the PV is removed). By my calcs the move towards more front bias is small ie less than 10% if you stick with the rear 3.2 caliper compared with the 964 2-pot caliper. Anyone disagree?

Richard