Originally Posted by oldskoolchuk (Post 3966149)

Yes, I brought this subject up in Boosted VQs. It's hard for me.to believe that there isn't a kit available for these transmissions considering the way the synchros fail with boosted applications. I've seen quite a few posts about trans problems over the last number of months that I've been a part of the community. I figured that if I encouraged discussion there too, perhaps it would get some kind of response from someone who had either built a stronger solution, or could point me in the right direction for upgrade kits, or perhaps at least someone I could shop mine to for some modifications since mine is still shifting well and not grinding yet. I've owned 3 of these now, one of which had a new trans put in under warranty. Both the others shifted so much faster than mine is now. Neither of those were boosted though. I didn't warranty this one because an adjuster.would tell me to **** right off as soon as they looked under the car or under the hood. I still don't like the idea of buying a whole new trans to fix a few parts that are wearing... but it seems like it's our only recourse.

The thing is there's an opportunity for someone to make a lot of money making a durable trans or by putting together an upgrade kit for this car... people love boosting them, tracking them, and drifting them. If I was a trained transmission mechanic I'd jump at a chance to start up a company. I really don't think success is "pie in the sky" on this. There is a market for this... it's just waiting for someone to jump on it.

Originally Posted by 2011 Nismo#91 (Post 3966236)

When I toasted my 5th gear synchro I looked into some of these upgrades to the transmission. Essentially it was working out to 2-2.5 times the cost of a new transmission. For a boosted Z which frequents a drag strip this might be viable, but how many of those are out there? Based on the people here there are very few mentions of broken transmission even for the boosted group.

Originally Posted by Spooler (Post 3966245)

LOL, price a sequential. 25k plus install and custom driveshaft.

Originally Posted by BGTV8 (Post 3966337)

Not quite so squeezy. Options

https://www.hgtprecision.com/contact/

US dealers here: https://www.hgtprecision.com/dealers/usa/

https://www.ttindustries.com/car-gearboxes/ TTi GTO to 750ft/lbs or TTi XHD GTO to 1000ft/lbs (but only 5 speed)

The price is around NZ$14K which will be about 2/3rd in USD

My 3.5" CrMo tail-shaft cost A$1800 with hi-capacity yokes

They can also be found on the motorsport sales websites:

https://www.my105.com/ListingDetails/id/20474/latest/1

Originally Posted by AlWakRa (Post 3969028)

I read the whole thread without any idea on where or how to order the syncros :icon14: I know it is old post but still active, in that case, anybody knows what is the part numbers to buy new syncros for syncrev transmissions?

Originally Posted by JARblue (Post 3969139)

https://conceptzperformance.com/items.php?p=234

Part numbers for the 370Z synchros
Reverse gear synchro: 32631-CD000
1st gear synchro: 32620-CD401
2nd gear synchro: 32620-CD008
3rd gear synchro: 32620-CD405
4th gear synchro: 32620-CD016
5th-6th gear synchro: 32604-5X00A

Originally Posted by Elmo370z (Post 3969157)

Shep will build you a transmission

Originally Posted by Spooler (Post 3969269)

LOL, 3rd gear is the hardest pulling gear for most cars. This guy has broken several.

Originally Posted by redondoaveb (Post 3969275)

Most of his races are roll races and he flat foot shifts 3rd and 4th.

Originally Posted by redondoaveb (Post 3969275)

Most of his races are roll races and he flat foot shifts 3rd and 4th.

Originally Posted by Elmo370z (Post 3969338)

Dude is a idiot

Originally Posted by redondoaveb (Post 3969997)

On Facebook this morning

Originally Posted by Rusty (Post 3970005)

I hope he posts something on the forum. As some of us ain't on facecrap.

Originally Posted by redondoaveb (Post 3969997)

On Facebook this morning

Originally Posted by AlWakRa (Post 3970348)

So maybe I should wait for Soho before going ahead with buying new syncros, hope it is in final stages.

Originally Posted by AlWakRa (Post 3970348)

So maybe I should wait for Soho before going ahead with buying new syncros, hope it is in final stages.

Originally Posted by beauz (Post 3978112)

I broke my 5th gear synchro @ 80k kms on track. Ended up just buying a new box. Interesting that some people were having problems with redline mt85. Isnt it supposed to be specifically for our box?

Originally Posted by Spooler (Post 3978135)

Noop, The problem happened years ago back in the 80's. Folks were putting 80w in the trannies. They were complaining about them being hard to shift. Come to find out when the tranny fluid weight was converted from Metric to English they were actually supposed to have 75w. Speed that up to the present time they are supposed to have 75w90 GL4. The problem with 85w is it makes the tranny tuff to shift when it get's in the 40's. You can mess up a syncro if you shift it wrong cold. This info has been known for years and people still put the wrong fluid in it.

Originally Posted by Spooler (Post 3980979)

I take that back. They are interested and would need 5 people to commit. The question is Dog engagement or heavy duty syncro's? Haven't asked about a sequential gearset yet.

Originally Posted by redondoaveb (Post 3980980)

What about Shep? I wonder if they'd be interested.

Originally Posted by redondoaveb (Post 3980980)

What about Shep? I wonder if they'd be interested.