I'm looking for a trans to hold the mentioned power reliably. I broke my B16 open diff (also split the case) and need to upgrade. The trans will be going in my EM1, so it has to be hydro and I prefer to stick with the B16/ITR gearing. Will a OEM USDM ITR trans hold this power? If not, what needs to be upgraded in an OEM B16/ITR trans to hold? Just the diff? More? The car is driven on the streets and runs drag radials. Any questions just ask.

Thanks for the help, Mike

 

ITR diff should hold the power.

What clutch?

What size DR's and whats your max RPM?

 

Believe it or not I forget the clutch brand off hand....... It is an unsprung 6 puck. It has about 10-12K miles on it at this power level with great results so far.

225-50-15 BFG's

8200 redline

I did some searching and it looks like driving style has a lot to do with what trans will work. I consider myself a smooth driver so the ITR should work, but it's definitely not bullet proof.

I'm open to any advice/opinions.

Mike

 

With that much power on DR's the only thing I'd be worried about if the FD. More power or slicks then I'd worry about the diff and gears (assuming you run an ITR LSD). I've got an ITR trans ready to go.

 

if your that worried about it with 400 wheel, send the gears off to get heat treated. buddy of mine recently did that on his daily 750+ eg hatch. hasnt broken anything yet...

 

We did fine on a stock B16 tranny with a Quaife LSD for two years on about 450whp. The 6 pucked clutch did wear pretty quickly and worn down on 4th and 5th gear synchros. We ended up replacing the B16 4th and 5th gears with GS-R gears.

 

There is a difference in street tires on the street and radials or slicks on a prepped track.

 

Aquafina,

Read your signiture and it reminded me that I am using an Action clutch.

I have heard slicks are better for trans life since the sidewall absorbs some of the shock to the drive train???

Mike

 

Nope. If you don't know how to drive and compensate for different track conditions, the slicks/radials will be worse on the trans than street tires.

 

lol? i agree. but yea slicks grip more so the impact is actually worse. street tires usually spin on the impact.

 

dang this is my problem also. so aquafina, what is SImike's next step move?(and mine too). no busted tranny though, but i have driveshaft shop axles and street tires(slicks soon)
not to thread jack just just trying to get more infos for us OP

 

No matter what I do I plan to use stock axles. Hopefully that will be the "cheap" weak link, yet strong enough to enjoy driving hard.

Mike

 

MFactory LSD, MFactory PRO final drive, then MFactory PRO 1/3/4 or PRO 1-4.

 

...how much is that? and do i send you my tranny?

 

You can send your trans to me (MFactory East Coast Installer) or another trans specialist.

 

how muchy?