Well tonight at the track I hit second gear and got nothing. It happened twice back. I launched and would shift from 1st to 2nd, but despite the fact that the shifter was well seated into the 2nd gear position, all that happened was the motor revved up as I let out the clutch.

The good news is that 2nd gear still works when you drive normally. The gear engagement is just a little rougher than before. I am assuming the synchros are shot, but am only speculating as I am not a tranny expert.

I knew it was coming as my tranny has been grinding bad from 1 to 2 shifts. This is my second transmission and there will be no more free replacements as my Z is no longer under warranty.

What I am wondering is, since I am pulling the tranny one day soon, are there any performance tranny shops that handle building up the 350 Z tranny. If I could find one to make the tranny stronger, that would be great!

Thanks for any info!

 

Yep

 

couldnt you get all the gears and stuff cryo'd? it seems to do wonders for pistons,rods,etc? you might want to look into that?

 

burnt up clutch disc..

 

You may be right about the clutch as I could definately smell it burning last night. The clutch has been feeling heavier for the last week or so as well.

If the clutch is burnt though, why is it only slipping that bad when I shift to 2nd. I would think that the launch is harder on it. I slip the clutch when I launch due to street tires.

 

not 100% sure..

when my last clutch started to slip it would only be in 6th or 4th...

but thats what it sounds like it is to me...

 

isn't the tranny covered under warranty longer than 3 years?

 

I am sure it is, however I am over the 60,000 mile portion of the powertrain warranty as well so that wouldn't apply.

What I would really like to do it get the tranny built stronger if possible. If it was indeed the tranny that failed and not the clutch and considering that it is my second tranny, I would rather just pay to have it built stronger.

If anyone has information on where I can get this done, please let me know!

Thanks

 

5 / 60 for te trans...

trans fine... its your clutch and how you use your left foot that is the problem... :-/

 

That would be great if you were right as I know where an extra clutch just happens to be laying around.

We'll see.

 

Does it feel..like..uhm i'm not sure how to describe it.. does teh clutch kinda get sticky and feel like a dead log? Thats how mine felt when I burnt it up accidentally. Fortunately it got better as i used it. Ive learned teh stock clutch SUCKS when its cold. Itll loose grip and u'd never know untill ur redlining and grinding the cluthc.

 

Not sure if anyone is rebuilding the Z trannies, but the first place I would try is SGP. They seem to be on top of things down there.

 

get a nice dog box tranny. synchros are for pussies! nothing like straight cut gears.

 

Deburr, polish, cryo, shotpeen, Redline Shock Proof. Thats the ticket for stock gears.

 

I destroyed my tranny also and it did something similiar to what you describe. My tranny started grinding from 2nd to 3rd and from 4th to 5th. It finally wore the 3rd and 5th gears enough that under full throttle the gears would slip but under normal driving it would still hold. All other gears worked fine under full throttle just not 3rd and 5th. I thought it was the clutch but when we took the clutch out it still look it great shape. Turned out 5th and 3rd gears were worn so much that the couldn't hold the that much torque.

Here is a link if your interested in a race transmission. http://www.xtrac.com/mainindex.htm

 

We do offer an upgraded automatic transmission for the 350Z and G35.
If you are intrested, here is the information for the unit.

http://store.yahoo.com/sgpracing-store/sgpraautrup.html

Hope this helps,
Steve @ SGP Racing

 

What did you end up doing? Did you just get another OEM tranny?

 

Upgraded autos suck donkey dik, I love shifting/slamming gears too much to ever drive one, let alone race an auto. Good luck done12many12-if you find any more info on beefening up 6 speeds let me know

 

Yes, just had the OEM tranny rebuilt. I wish I didn't do that but at the time I couldn't afford to buy a dog box or anything like that.

 

^^ How much was that and what did it include?