Built Manual Transmission
 

Im almost finished my trans build. I have all new cryo treated shift forks, and brand new Racing synchros. With the new synchros this tranny is bad ***. My

5th gear and baulk ring is trashed from the stupid thing grinding like all hell. I have no idea where to get this from. Any ideas would be awsome theres really no information out there. Mabe the 350z and 370z use the same gear and ring? Any info would help alot.

What's the cost estimate for a rebuild? My 3rd gear synchros are toast and 5th is starting to grind occasionally. A new one was supposed to go in today, but our area was hit by a tornado Saturday night. The still dealer didn't even have power this morning.

This is the first prototype and we put the new synchros in it and we tryed to reuse my original fifth gear but it was to beat up but needless to say 1-4th shifts was bad *** with these synchros. I want to offer it to everybody on here because I know this has been a bad problem in the z car. The rebuild is looking like around 2000 but I'm not exactly sure just yet. We havnt tested this over a period of time yet. These synchros were built to handle 24 hour long races but we not sure how they'll hold up in a daily driver but were confident you can drive it till the wheels fall off lol.

Wow that's nuts. I just picked up my car with the new transmission under warranty (tee hee). I can finally enjoy smooth grind-free shifts haha. It's such a waste to ditch the original one so I'm going to see if it can be kept so it can be rebuilt at a later time.

I'd definitely like to see them offer something for the masses.

Yea to open the tranny and install the parts is actually cheaper then 1000. I was just referring to your cost of removing the tranny and any other surprises. I def wouldn't do it to a tranny with no problems or a car under warrantee but if your going to do any kind of aggressive driving your going to tear those synchros up again and quickly. This trans I'm working on was trashed. The shift forks were bent and all kind of crap happened. With the new parts this tranny will hold power with aggressive driving with no problem. Anyone tracking there car would def Benifit significantly. It's basically a built tranny.

You wouldn't ditch it we'd take the trans you have in it and install the new stronger components. It's just like installing a transgo shift kit into a auto.

Where did you get your rebuild kit from or parts?

You can buy tranny parts from Nissan with the correct part numbers. The synchros arent Nissan that's all I really know. My mechanic is a tranny genius. I can give you a pic with the parts and numbers if ya want. The syncros is the special part man these things are sick.

subd!

Very interested in pics comparing the parts if you've got them, and some more info on the syncros and where to get them etc. Thanks.

ok im going pick the car up today. tranny is done and installed. Im going to put some hard miles on it the next couple days. As for the synchros they arent nissan syncros. As much as it hurts to know it but its ford raceing syncros lololol. I really dont give two ***** since this tranny shifts like a mofo now. As for the parts to rebuild it is regular oem parts which is definitly strong enought for our cars. The weak point is the premature wearing of the syncros. I will be working a price out for doing this build for all of you with the same problem. All youd have to do is send it too us then well send it back.

What if we just want the parts?

Are there any options on new ratios? I'd like a really long 6th gear to go with my 4.11:1 rearend.

yep there are aftermarket gearsets but there realllyyyy expensive. I can do some research for ya. That would be a really good idea for the guys with the rear end gears like you. you could get your hwy mpg back.

Hmm, sounds like it could be a winter upgrade for me :tup: The syncro's are the worst part about this transmission, thanks for doing this!

FYI a new transmission from Nissan is around $3000. A rebuild with better parts sounds like a much better option.

yep it cost me much less then a new trans. Like my mechanic said the trans will be much tighter and much stronger because of all the little things that go into it he himself will be the one putting it together and not on some assembly line somewhere so he will pay much more attention to detail. As for the synchros this car is my daily driver so I drive minimum 50 miles a day so they will get tested and not to mention its boosted and I dont believe in driving a 600 horse power car like ms daisy so im probably the best candidate for this test. after feeling it and driving it I think I could drive it till the wheels fall off but wel see.

Yes there are taller ratios but just to do the gear it wouldnt be worth tearing the tranny down but if we were to tear it down perhaps to do the synchros or a rebuild then it may be worth it since its apart already. What is your main reason for wanting the taller ratio? Im sure probably for gas mileage right?

1st to 2nd sucks when I'm in it hard so any improvements there would be awesome. A taller 6th would be nice to get highway MPG back.

then take the 4.08 gears out of the rear and put the oem ones back in it. or do a 3.9 gear in the rear.

The gear sets are pretty expensive. One would wonder if you could use a taller gear setup from a different nissan but that takes a ton of research. The after market os giken gear sets are like 3000 just for gears which are absolutly a rip off but thats what it is. So only idea to keep cost down would be to mabe use a taller gearset from another nissan car but if I were you id just go down to i think its a 3.9 ring and pinion.

It's a tad over $1600, but I imagine labor is around $700.

It really depends exactly whats going on with the trans. Like mine had some pretty serious issues for instance. My shift forks were bent and the gears were grinding on each other and I had an over heating problem so it was pretty messed up so all those extra parts cost extra money but if your car has a grind but shifts fine in all the other gears all youll probably need is the bad *** syncros I have and possibly that one gear that was grinding and of course well put a few tricks into the shift positioning so it shifts much better. So your probably looking at around 1500 to 2000 range. My mechanic builds track zs so hes always got something up his sleeve that he learned from building these trannys. I was laughing because he calleb me up and said he hates me because hes going build a spec 370z because he had a blast driving my 370 lolololol

Sry Iv been busy and really havnt had much time to update this thread. I'm about 5000 miles in and the trans feels solid even wayyyyy better then it did out the factory. Now the only thing is it no longer feels or sounds like a factory tranny. When you go to shift it that mutha shifts. The Kevlar synchros are unbelievable. You can feel it engage and release. Now unfortunately it isn't smooth anymore but I drive it daily and it isn't bad at all. I'm running 560 WHP and when I step on it and shift it has no hesitation at all. It almost makes you shift to the next gear because of the spring mods he also does to it. The shifter actually feels like it pulls itself into gear. All in all so far I love it. It does have a little bit higher whine sound but nothing even close to being unbearable.

What shop did all the work? What were the details behind the upgrade (beside ford syncros),

in for part numbers

2X!

I tryed to do a run of those synchros about a year ago and no one showed any interest so i just dropped it. Im still running the setup with no problems so far. I really dont know anything about the parts. The mechanic who did the work knew something. Everybody shut me down when I was going to try to get a few made. These are one off parts not sold to the public. They were from some race team out of California he was good friends with. I havnt talked to him in a good minute.

Might be something worth looking into again now that there will be an influx of boosted 370's.

http://you-just-need-to-shut-up.com/...-my-money2.jpg



Lol... In all seriousness I think there would be a good market for this, and some good money to be made going by your reviews and how yours is holding up. Anyway to get this going again?

:tiphat:

in for updates

Ill see if I can get a hold of him.

Any Luck?

annnnnnnnnnnnnnd subbed

Bear with me fellas I have a new born and a new job. I'm talking to a company to see if we can get them.

So let me get this straight...You want us to be reasonable? :icon18:

JK Take your time. Most of us are pretty excited though :tiphat:

Lolololol I got dug pretty deep and I found a company that does them for other cars. I sent them a email so well see what they say

Not to sound redundant, but.

https://encrypted-tbn3.gstatic.com/i...Q4FiOlegphi5gs

Hahaha aight.

Sub'd

bump for some updates.