Quick question:



Can 89-91 1 piston brake calipers be used on a 91 that originally came thru with 4 piston?



Is the bolt pattern width of 6.25in the same as that of the 1-piston caliper?



Thanks!

yup they are interchangable but you must also change the brake line, i upgraded my GTU to 4pistons.....

cool...thanks dude

[quote name='Erik' date='Jun 5 2005, 06:56 PM']cool...thanks dude


[/quote]





physically yes. I think the part numbers for the proportioning valve are different though. Becareful

[quote name='Cheers!' date='Jun 6 2005, 12:33 AM']physically yes. I think the part numbers for the proportioning valve are different though. Becareful


[/quote]





thanks for more info...



is the proportioning valve the nozzle that feeds the brake line into the caliper?

[quote name='Erik' date='Jun 5 2005, 10:11 PM']thanks for more info...



is the proportioning valve the nozzle that feeds the brake line into the caliper?


[/quote]



Here you go...

since were talking about brakes. Does the GXL have 4 pistons all the way around or just in the front. Also is there anything i can use off the GTU for my GXL that would be an upgrades. Im gettin ga new suspension setup so i wont take the GTU's



jason

[quote name='ROTARYROCKET7' date='Jun 6 2005, 10:11 AM']since were talking about brakes. Does the GXL have 4 pistons all the way around or just in the front. Also is there anything i can use off the GTU for my GXL that would be an upgrades. Im gettin ga new suspension setup so i wont take the GTU's



jason


[/quote]



the config is 4 pot up front, single in the rear.



Not sure what came on the GTU... i think that was considered the base model in canada between 89-91 so it might only have the single piston front caliper.

all 2nd gen rx-7's have single piston out back but the base models have solid rear disc as opposed to the non base models have a vented rear disc

[quote name='Cheers!' date='Jun 6 2005, 12:17 PM']Here you go...


[/quote]





Thanks again man...



Anyone know if the 4piston proportioning valve can be used with 1-piston calipers?

[quote name='Erik' date='Jun 6 2005, 07:14 PM']Thanks again man...



Anyone know if the 4piston proportioning valve can be used with 1-piston calipers?


[/quote]



That I do not know... but i think j9fd3s would know. He also knows he has my calipers in his car he won't ship to me

[quote name='Erik' date='Jun 6 2005, 07:14 PM']Thanks again man...



Anyone know if the 4piston proportioning valve can be used with 1-piston calipers?


[/quote]



actually ive been thinking about that too. i thought i have all the parts for the conversion (even the brake booster). i think it cant be used though

I have used it with the master cylinder, it feels like the rear wheel braking is reduced. The car will dip forward farther than normal under hard braking.