ok well i some how broke my differential and shad said he is unable to rebuild it so i went and bought a j1 tranny for a b16 but i was wondering what is the difference between the j1 and the s1 ?? also will it effect me any?? like will it help or not make a difference or what ?
any extra info will be greatly appreciated
thanks
zach

 

The S1 and J1's share the same gears, however all the J1's that I have counted have a 4.266 FD ring gear instead of the 4.400 FD of the S1.

What is left of your old S1, and are you willing to sell it? I rebuild B trannies, and it's always good to have spare parts.

 

everything is still there and its really not that bad but 3rd and rev gring a lil make an offer pm me

 

so does that mean the j1 will be at a hire rpm in 5th gear now say at like 70 if my s1 was at like 4700 the j1 will be at like 5000 rpm???

 

The 4.266 J1 will be SLIGHTLY slower through the gears than the 4.400 S1.
Also, the J1 will give you a slightly lower RPM for a set speed than the S1 in any gear.
Do not think that this 4.266 final drive will be slow like the much slower LS trannies. The longer gears combined with the 4.266 FD is what makes the LS trannies slow.

I would have to see this tranny before offering you a price.

 

it is no good it broke the counter shaft

 

Thanks Shad