Has anyone used a Miata/MX5/roadster diff centre in there early RX series. I have been advised that its a bolt up option... Does the crown wheel and pinion shaft also fit in the Series RX? housing???
cheers Luke |
I've never heard of anyone doing so as most here in the states swap stock diffs for dana's or ford 9 inch rear ends. Let us know if you find out for sure that you can do that.
Also, I love rally racing so if you have any vids please share! |
Originally Posted by thatpoorguy
(Post 847245)
I've never heard of anyone doing so as most here in the states swap stock diffs for dana's or ford 9 inch rear ends. Let us know if you find out for sure that you can do that.
Also, I love rally racing so if you have any vids please share! So ford 9 inch rears can run normal street tyres? I though that you had to run deep dish wheels or slicks to run a 9 inch rear. |
Originally Posted by lukearama
(Post 847213)
Has anyone used a Miata/MX5/roadster diff centre in there early RX series. I have been advised that its a bolt up option... Does the crown wheel and pinion shaft also fit in the Series RX? housing???
cheers Luke Yup ive heared that that it works form some good people. I think it has to be 84-85 rear.. What Ive done is Kia Sportage 4X4 front diff. complete bolt in. Pros and cons Pro Miata diff has lsd Pro kia diff is 4.77 Con kia diff is open so u need to weld gears not fun on the street unless your hadrcore Con miata diff gear ratios i think arent as aggressive as the kia diff Remember u need a 84-85 rear. Kia front diff can be found real cheap i paid like 60 something dollars Your car will pick up a tad more than a second in the quarter mile trust me. |
Would it hold up though? Looks like the guy's going to be rallying it so it needs to take some abuse.
Most that use the ford 9" are using it for drag racing and have it custom setup and tub the rear, not sure what you'd have to do for running it rally.... |
Originally Posted by thatpoorguy
(Post 849030)
Would it hold up though? Looks like the guy's going to be rallying it so it needs to take some abuse.
Most that use the ford 9" are using it for drag racing and have it custom setup and tub the rear, not sure what you'd have to do for running it rally.... If u go the kia route the ring gear is cut different and way fatter than the factory diff. way way stronger wont break. First hand experience: big street port 12a holley rb intake dual msd factory pp racing clutch disk. 13" mt slicks... on like 12 13 lbs of air big burn-out. kia rear holds car went 13.3 rx-7 it was If u wanna rally factory diffs will hold dirt slips pave ment grips.... u just get shitty ratios with factory pieces ford nine is heavy real real strong and u can get what ever gears u want even like 6.50. rally cars wana be light |
Good call, I'd go with the Kia rear end too
|
All times are GMT -5. The time now is 05:22 PM. |
© 2024 MH Sub I, LLC dba Internet Brands