Originally Posted by Shawn Originally Posted by kcobabe 
Sourcing straight from the JY would probably be a P11. My understanding is it's more dependable.
P11 or B15, either one. And you want one with an LSD.
From what I *understand* the B15 is preferred for NA, the P11 for turbo applications.
Let me raid the Technical Information Library, and the Tech Section of the respective SR20 forums....
B15/P11 tranny- why it's better than B13/B14 - SR20 Forum
HOW TO: P11/B15 transmission swap into a B13/B14/P10 - SR20 Forum
Disassembly of B15/P11 tranny/install of friction type LSD - SR20 Forum
http://www.sr20-forum.com/howtos/725-lsd-vs-non-lsd-transmission-axle-comparison-pics.html
Gear Ratios for B13\14 & P10\P11 - SR20 Forum
Originally Posted by kcobabe yes, and if you can't find one of those (don't know why you wouldn't) next in line is the B14. I would also keep an eye on the FS section. A couple people (mainly Andreas) have come across 20V 6 speeds which can go in it without having to open the case. You do need a lot of parts and will loose the hubs you currently have, but much more efficent trans.
The 6-speed is from the Spec V Sentra.
http://www.sr20-forum.com/howtos/45436-how-rs6-6-speed-swap-guide.html
How To Put A QR B15 6 Speed Tranny In Your Car - SR20 Forum
http://www.sr20-forum.com/vvl/38892-some-great-6-speed-tranny-info.html
Hope that helps.
The B14 had a *hotly debated* half-assed *fix* from Nissan that *probably* makes it better than a B13. BenFenner and I have gone round-and-round about it. I call it a wuss band-aid because Nissan knew the B13 tranny sucked and should have been re-called. Ben (who is faaar more mechanically minded than me) thinks it is a pretty good fix. However, there have definitely been some B14 transmissions (and late model B13 trannys, after the supposed "fix") that develop 5th-gear pop-out. I will concede that a B14 tranny is still probably lower mileage, and a better bet than a B13 transmission. I would not waste my time with either a B13 or B14 tranny ever again. YMMV.
Is this in the manifesto?? if not, it should be. very comprehensive post Shawn..
Be the first to like this post.
Back to top
