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Originally Posted by Sonyps307 (Post 105093)

There's supras running 1000+hp on stock internals on pump gas all day

Prove it. Name even ONE Mkiv Supra Turbo that has this setup right now, and I'll personal get in touch with him/her to verify. If you won't or can't then please STFU because this is VERY BAD advice. Will you buy Mmeyer183 his new engine when he trys this and his #6 cylinder starts blowing large, dense clouds of bluish white smoke out his tailpipe?

Where are you getting this *bad* information? Please let me know so that I can set him/her straight too. Let me set you straight: There is no 3L 2jz-gte Supra on earth pushing 1000hp with only 93 (R+M)/2 octane fuel. Period.

Without water/meth injection, 1000hp on pump gas using a 3L 2jz-gte is completely impracticable. With an unlimited budget and no care for power:weight ratio, sure it's theoretically possible...for example, you could try rig up a system that cools the charge-air with liquid nitrogen. If you got the intake air cold enough (I'd guess the air would need to be maintained at about -150 degrees F during full boost), you *might* avoid detonation with 1000hp and pump gas using a 3L 2jz-GTE. Oh, don't forget that at -150 degrees F, the air (and therefore intake O2) would be MUCH more dense, so the air-fuel mix would need to be tuned appropriately to compensate.

Mmeyer183, if you're not on an unlimited budget, and/or you don't want to waste months experimenting and replacing expensive engine parts, make it easy on yourself and simply ignore Sonyps307's post.

Quote:

Originally Posted by Sonyps307 (Post 105097)

With a fuel system upgrade and bigger turbo he can make more then 600hp on pump gas it's been done plenty of times.

600hp=510rwhp (6spd), right? There's only 2 ways (without meth injection):
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1) Destroy the engine - not immediately, but every time you boost to 510rwhp, it detonates, which takes chunks of tiny metal out of the pistons and head. What do you think happens to these tiny chunks? They ruin the cylinder bores, valve seats, and the turbo's turbine blades. Of course, it depends how often you take it up to 510rwhp, and how long you hold it there when you do, but regardless you're looking at a new/rebuilt 2jz-gte going this route (probably sooner and not later, relatively speaking).
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2) Run a turbo so big that the lag makes the Supra practically undriveable. Huge turbos (80+mm inducer) generate very low levels of additional heat at low boost levels. They also lag like crazy... eg. with no boost whatsoever under 5500 rpm. Sure you can hit 510rwhp with a setup like this on pump gas, but who one earth would ever want to drive it? Sure, the huge turbo could be spooled with nitrous, but if you're going to that trouble, why not just put a meth injection system in, together with a more reasonably-sized turbo?

Quote:

Originally Posted by warmkop (Post 105096)

Don't believe that. you can't boost that much with pump fuel it will destroy the engine

Agreed 100%

Mmeyer183, ask Sonyps307 if he'll pay for your engine if you try that setup and it doesn't work out for the best. My guess is Sonyps307 runs for the hills...because he 1) has no idea what he's talking about, and therefore 2) won't stand behind his advice.

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