well today i was driving the car and i was running it trough its paces... i get up to a light and i put it in 1st gear, let out the clutch..... nothing. same in 2nd. the gears feel empty... i am sure i broke the gears but what can i check? 3rd - reverse are fine.

what is the power rating of the TII tranny? I have am in the mid 300's rwhp at 10 psi.... what can i do to make the tranny stronger?


i have another TII tranny that i can use for parts but i think the tranny has a few too many miles on it... so i am gonna go for a rebuild.

how hard is this?

dave
87 TII (Series V Conversion)

 

Sounds like the same thing that happened to me. The tranny in my 90 na went out, could not get 1st or second at all. Turned out to be the 1-2 fork had just worn out. I don't know anything about the power the tII tranny can stand up to though.

 

I second what rgordon1979 said about the fork, the T2 trans is a strong unit. If it can hold up to AJC-13B droping the clutch at 9k rpm with his 600hp 13b it's good enough for me

 

Oi!

It was 10500rpm

 

Didn't it spectacularly NOT hold up?

 

I'm guessing you're sure it's not the clutch (works fine in other gears?)

Also I've looked at the insides of FB transmissions (the shifter fork and such) and while it's incredibly difficult to do, there ARE things that can go wrong with it, things like locking it into 2 gears at once, etc.. it might just be that. Before you have it replaced, remove the shifter housing from it (the rear half of the transmission), and check to make sure things are ok in there.

OH.. and if you need a new tranny, I've got a TurboII one from a J-spec

 

No problems whatsoever

 

The TII trans has significantly stronger internals/case than the NA but I believe the extension housing and shift rods/forks are the same (weak). I broke my NA's 1st/2nd fork with minimal effort 500 miles after a rebuild. Good thing my friend had a spare TII trans for me. Know anyone who wants my NA trans after I fix the fork? ALL new internals.

 

thanx for the tranny offer Barwick, but that is why i bought a TII parts car for 100.00

 

I have a turbo 2 tranny in my car, and the only problem i have ever encountered was sincro failure on 6 trannys so far, however i have never been able to break one yet... my car makes 400 foot pounds of torque, i was told that is what kills trannys. When i switched to shockproof gear oil ( redline makes it) i noticed the trannys lasted longer, and on noisy trannys it quieted them up !!! the viscosity is 50w-250w and the best part is it dosn't stink like gear oil usally does! If you need a low mileage turbo 2 tranny go to " used engines" and scroll to the bottom, there is always alot of them in stock @ www.rotaryshack.com

 

I have personally seen a nice 13B Rx3 full chassis run 8.8 @148mph with a factory turbo II tranny. They could take some abuse. Hey 680rwhp12A there is a Drag racing car down in the island running 8.27@162mph on a 1985 12A engine with turbo set up.. are you claiming 680 rwhp with a 12A? becasue if you are that is some wicked horsepower to run a very nice 7.90 or better on a full chassis drag car with a 12A..

 

yes i made 680 whp ,l have dyno sheets to prove it .. unfortinutally i race in the street class so im using the stock chassis so i dont and cant race with full boost, anything over 22 and im spinning bad... my car also has to weigh 2500 pounds to compete the rx3 your talking about weighs 1600 pounds and is back halfed! it also uses 93 side housings! hybrid 12a they call it, dont ask how they do it ...

 

No,No,no the Rx3 that used the turbo II tranny was a 13B. the other car that I'm talking about is a 1971 nissan 1200 car. the guy is using a full chassis car, the weight is 1840lbs and runs 8.2 all day with a 1985 12A. no Fd side housings, original 12A ones I personally saw the engine I was very impressed with that 12A. I looked at the intake manifold and it's the old school down draft webber manifold. Owner of the car told me he has made 550rwhp @28lbs of boost with that 12A on VP C16 race gas.

 

Dyno sheet please...

 

dyno sheets comming, i cant figure out how to put it up but it will be up soon!

 

It's easy you scan it to a .jpg format

then open an free account with photoisland.com

upload the photo
find the photo on the left is "link to auction" line

copy and paste that here with [img]"paste url here"[/img] tags

 

cool thanks ill try it today!

 

ok so here is a link to my dynosheet....(hope this works) www.rotaryshack.com/dyno there you will find a hi res fax of it

 

I would love to see that 12A in a full chassis drag car.. congrats to you on that power..

 

I have destroyed two output shafts like this



This is on 8500 rpm launches on 26x8.5" slicks.

2nd box did the following 60foot times 1.39, 1.37, 1.36, and then broke as you can see above

I'd like to think it can survive a 9 second pass in my car, time will tell

 

Get Guru to make a Heavy Duty output shaft, I think they already make one if I'm not mistaken Mate....

 

I had a good chat to Rohan from Guru when I caught up with him at Phillip Island. Unfortunately, their dog box uses completely different components, and their output shaft is not compatible. He seemed a bit surprised that I was breaking them like I have been.

I have found a place locally to custom make an output shaft, I think other parts will now start breaking but it is worth a try! We'll see how it goes.

 

you bound to start breaking other things. guss cross your fingers that it is somthing cheap and easy to replace! lol

 

looks like you need to buy a Jerico tranny, those come with 400 type output shafts.... you wont break that!