I know people have been discussing this back and forth... but My question isn't about the engine. Its about the trasmission. I've looked on Ebay and seen that the 2jz-gte Engines come with Automatic trasmissions... Is this required to run properly or can I use the Stock 5 speed Lexus Trasmission?

 

u can use stock tranny

 

Thanks! Much appriciated!

 

The stock tranny can probably last if you are running stock boost but once you increase the boost, you are at a high risk of blowing the tranny. I think the stock w58 tranny can handle about 300hp safely not sure if it can handle more than that for longer periods of time.

 

i am running the stock 5spd tranny and it works fine. just update your clutch to a better one like clutcmasters or act and you'll be fine. dont be boosting or launching crazy or burning tires....hahhaa

 

well..i think Clutch choice also has an effect on the w58's lifespan. If you go with something harsh, like an unsprung puck designed clutch disc with a harsh pressure plate, it can wear your w58 out prematurely. Also, I remember reading of one person who blew his w58 at the 300rwhp level (www.supraforums.com), so it seems like a gamlbe in the end. If you're willing to run high power through your w58, I'd recommend having another transmission ready to replace it :-P .

 

well, im not using any 4 or even 8 puck clutch. just regular disk. i dont race the car at all.
just wanted that extra kick.

 

what a waste

pat i think were going to willow springs in a couple months if you do decide to race. just go easy on it. your tranny should hold fine.

 

i will see if i can attend. i wish i still had my nissan 240. i would drive that car instead...

 

I think the w-58 destruction number is a little higher than you are hearing so far. Lay off drag strip launches, drifting, and burn outs and you are going to be able to run closer to 400+ rwhp on that tranny given the use you describe. I am making high three hundreds at the wheel right now. Kevlar clutch. My use is freeway and road course. There are Supra N/A 5-speeds running single turbos pushing 500 hp, yeah, they are slightly less weight than our SC's