S14 transmission on S13 block??

[dj_lennon_franz]

i searched thru the forums already and didnt find anything really relating to this (found help on swapping KA trannys) so dont get on my *** about this topic

are there any issues in swapping a S14 blacktop transmission to a S13 redtop block??? ive been told by numerous people that the S14 is just a better built transmission and the swap can be done...ne one here try it yet??? my 4th gear syncrho is grinding and its really pissing me off...id like to swap a new transmission (instead of paying upwards of 700+ bones to get mine rebuilt) to mine

also...if i have to go the route of a rebuild...are the KAde internals compatable with the S13 trans??? if not..are there any USDM internals that will work???

ne one know of after market synchros for the SR yet???

[NY S13 SR]

No issues. It's not so easy to find an S14 SR transmission alone though.

You could just find a low mileage KA transmission and swap bell housings. Very easy.

________________Jeff HHeavy Throttle

[dj_lennon_franz]

the bell housing is just the front part of the transmission correct??? (not including the rear section with all the gears)

[Beau]

Aren't the gear ratios different in the KA transmission?

[NY S13 SR]

If the ratios are different it is a small change, not immediately noticable in 3 cars we have done this to. We never compared rpm to speed before and after to get a solid answer.

The bell housing comes off the front of the trans, unbolt the center of the inside, and the bolts around the outside. Then a little prying will get it off.

______________________Jeff HHeavy Throttle

[Beau]

Are there different gearsets available in Japan? I swear my SR transmission feels like it has much closer ratios than the KA transmission that I took out of my car. It could also just feel that way since I have a ton more power now.

[ca18det_boy]

The SR,CA,KA, and RB internals are all compatible. This is what I am doing, getting the internals from all of the above and building your own gear set.

[Onizuka]

Are there different gearsets available in Japan? I swear my SR transmission feels like it has much closer ratios than the KA transmission that I took out of my car. It could also just feel that way since I have a ton more power now.

You might have the SR20DE transmission, has shorter gears (actually just a shorter 5th gear I think) than the turbo motor transmission if I recall correctly.

[Beau]

You might have the SR20DE transmission, has shorter gears (actually just a shorter 5th gear I think) than the turbo motor transmission if I recall correctly.

I'll have to compare this transmission to another SR. It pulls great in 5th gear and I'm still on stock boost, so maybe you are right.