Thread: which year tranny?

its not as rare as you may think..were you around on the old mailing list before any ser forum existed? probably not. there were more documented cases on there..

either way, i put a b14 tranny in my car, cause, well b15s werent even made yet..drove the car another 30K, never had popout again. if i was doing a tranny job again, it would be a b15/p11..

What makes you say that?

No, I joined the mailing list in 2001. Not sure when SR20 Forum started but I'm pretty sure it was after that.

Why didn't they make it onto the 5th gear pop-out master list? I assumed the list I saw was created by polling the mailing list members. This all happened 150-175k miles after the SE-Rs were bought. No one knew anything until they started failing and that was some 7-10 years after people bought their cars. I was around for that.

I found the poll I was talking about. Here's the entry form for it. Fifth Gear Popout Poll

And the results page which sadly no longer displays anything: Fifth Gear Popout Poll Results Table

My vehicle developed 5th gear popout at 56K and again at 150K.

When it developed the popout at 56K, which would have been about 1997, Mossy Nissan (Houston, TX) fixed the tranny under (extended 100K) warranty. To the tune of $1,500.00 (I paid a deductible only). They were well aware of the issue, my Service Advisor stated so, and they installed the "new redesigned" (B14) parts into my tranny case.

My car got pop-out again approximately 90K miles later, in 2003. Once again, completely rebuilt, with the "new OEM parts" inside. You could not even buy the "old style" 5th gear stuff in 2003 (nearly a decade after the band-aid). Nor does it make any sense whatsover that a dealer, or the tranny shop, would have "old parts that were superceded and outdated" just laying around to "sneak" them into my tranny unbeknownest to me. C'mon Ben.


If the redesign happened in 1993-94, then I have blown up my tranny twice with the "newly designed" parts inside it.


Lucky bastards as far as I'm concerned.

The "fix" was implemented by Nissan waaaaay before the 91-94 vehicles started getting popout by your mileage estimates. You are stating that the majority of the trannys from 91-94 only developed popout after at least 6+ years of driving (20K per year is generous).

That does not even make sense. How could/would Nissan redesign a part in 1993/94 when they did not know of the issue until 130-160K was on the vehicles, which would be a minimum of 1997, at 20K miles per year, on a 1991 transmission.

Why the Nissan (band-aid) fix in 1994, if the majority of the popouts did not start for another 3 years minimum? (By your numbers sir).


Bada-bing.

44K, 56K....and I am 100% positive, a veritible sh*t-load of other folks with B13's all across the world. That POS tranny was blowing up wherever they sold the B13. In Japan, Canada, Mexico, and the U.S.A.


So is my 56K and 150K.


Then why in the hell did Nissan "redesign" the gears in 1993 or 1994? If the problem did not rear it's ugly head until "7-10" years later? That would mean that the issue only started appearing regularly in 1998. The tranny was "redesigned" in 1993/94. Four of five years before the issue started appearing on owners vehicles (?!?).

Ben sir, that is illogical as hell.

Nissan knew about the issue before the "redesigned/band-aided" 1994+ transmissions. They would have to have known at least three to six months before they even issued the (crappy, half assed) "fix." In order to document the issue, get the re-engineering approved at Nissan, parts manufactured, and implemented/installed, both on the new (B14) trannys, and as a "retro-fix" for the 1991-1993.5 transmissions.

I'm gonna postulate that Nissan knew about the transmission issue no later than the spring of 1993. There is no other logical conclusion.


Yep, I found those as well. It sucks the results are no longer available.

Good discussion and informative debate gentlemen.

I think all of this could be answered by knowing when exactly Nissan part #32310-53A00 (old 5th gear) was replaced in the FAST by part #32310-53A11 (new 5th gear). Can someone find that info?
If it was some time after 1995 (which I suspect it was) then that really explains it all.

Shawn, I don't know where you're getting the idea that a 1994 transmission is redesigned. I am not aware of that. The B14s got a slight redesign, and I'm not confident that had anything to do with 5th gear pop-out, and I have an inkling that for one reason or another tons and tons of B14s ended up with the old style gear as well. Both my brother's and my 1994 transmission has the old style in it. Explain that if they redesigned in earlier.

That would explain the B14 trannies which suffer 5th gear popout.

Who's got this critical information?


You have stated that "a B14 transmission, or a tranny with the redesigned 5th gear from Nissan solves the problem", additionally that with proper fluid and upgraded motor mounts the transmissions should not have the 5th gear problem. Nonsense.

In 1997 the dealership apparently lied to me about their fix? Told me about the issue, repaired it under full warranty, and put in the old style parts?

In 2003, the tranny shop somehow located an Original Pre-Nissan-Band-Aid set of 5th gear parts with which to fix my vehicle? In 2003?!?

I totally, 100%, understand that the B14 supposedly got the 5th gear issue fixed. A minor band-aid on a gaping wound. When exactly in the life-cycle of the B14 tranny that "Nissan half-assed fix" happened is the crux of what we are debating sir.

The transmission was not fully redesigned until the year 2000, with the B15 and P11 transmission cases themselves, upgraded bracing inside, and a better tranny fluid distribution system.


Huh?!?

That is the point I am debating sir. Nissan did NOT fix the B14 trannies with the redegned 5th gear input and synchro until some time into the B14 tranny life cycle. Further, even with the Nissan Band-Aid (whenever it happened), the B14 can still develop pop-out, and the tranny case can still flex causing the gear stacks to seperate, therefore 3rd gear to shred. No matter what motor mounts or tranny fluid you utilize.

http://www.sr20-forum.com/general-sr20/17360-tranny-blew-up-2.html#post227495



B13 transmissions and B14 transmissions that have the "Nissan 5th Input Gear Synchro Band Aid" on them, can still develop 5th gear pop-out. That Band-Aid was weak-sauce, patch-it-and-pray, bullsh*t retro-engineering. B13 and B14 trannies inherently suck and are weak, no matter what fluid, mounts or "Nissan 5th Input Gear Synchro Band-Aid" is installed.

LOL. Now I am searching on trannies and I find this:

http://www.sr20-forum.com/southeast/18251-5th-gear-pop-out-need-good-tranny-shop-nc-suggestions-2.html

I *think* you are stating that with the "Nissan 5th Input Gear Synchro Band Aid" (whenever that was implemented) that it permanently (150 to 300K is close enough) fixes the B13 and/or B14 5th gear pop-out.

That sir, is overtly optimistic and unrealistic.

As you previously stated, the next step in this debate should be finding out the exact date on the "Nissan 5th Input Gear Synchro Band Aid". When exactly was that issued? Were Nissan dealerships required to remove the old stock, send it to Nissan, or were they allowed to continue to sell the "old parts" sitting on their shelves? (If so, that is bordering on criminal stupidity and/or negligence.)

The "N5IGSBA" was a mere patch on a fatally flawed design.

That was fixed with a sock... I still laugh when I think of that.

Hmmm, interesting. I have owned 3 B14s. Not one of them ever had popout issues. The higher mileage one was 150K. My other two~100K. One had a b13 tranny too.

I have seen 5th gear popout issues. I'm just hoping I never have to deal with it personally. That is really wierd that B14s are having issues now. That must be a pretty rare deal! I've seen TONS of them around here with tons of miles. Usually getting new trannies for syncro issues before popout issues.