hey everyone, i have a 86 na base model and want to upgrade the brakes and i was wondering for those that have the 4 pot calipers on the 4 lug hub, has anybody found any 4mm spacers online....and apart from the 5 lug rotors what else would i need to do to fit them on the 4 lug hub? any help is appreciated.

 

How To Install 4 Piston Brakes On A 4 Lug FC RX-7

Any decent machine shop can make the spacers you seek, using the picture that Aaron Cake has thoughtfully provided in the above link. Be sure to account for the bevel that he mentions as well. Other than that, follow the directions to the letter and it will work just fine.

 

Would the 5 lug rotors and calipers fit inside a 14in rim?

 

^ they will fit behind a 14" wheel, but it all depends what offset, spoke design, mounting pad design, and how the rear barrel is shaped. I will try and dig up some pics.

 

 

I take that back. Yes that is a 15" wheel, and that is a corolla, but all the conversions say minimum 15" wheel needed, and that is using a rotor with 6mm less diameter.

 

damm in that case ill just wait to get new rims and do the 5 lug conversion with the hubs thanks for the info i probably would have gone have machined the rotors and done all that work for nothing lol

 

...i have an 86 n/a 4 lug and i just got done doing all the brakes on it. i put new 4 lug rotors on all around, and i got new 4 piston calipers. they bolted right up for me. i didnt have to do any modifications and the they work good...im new to the whole rx thing, but why exactly are you supposed to do all these modifications?

 

which modifications do you mean? i wanted to fit a set of 4 lug wheels on my t2, so that write up is awesome.

 

Um, if you put the 4 piston calipers on the 4 lug rotors, you have less pad contact than with the single piston calipers so your brakes are now dangerously under capacity.

 

force = pressure x area. i believe that is the simple equation.
sorry. trying to get my post count high enough to at least see pictures. haha. probably as many are as well in this forum