300rwkw on 2j with factory twins

[allmtr]

Is this possible? Will the wheels spin off the turbos 4 seconds after it makes this kind of power? Has anyone done it?

Thanx

[ProjectSleeper]

ask dale how close we got

[MR 1JZ]

if someone does it with nitrous is that cheating?

id like to

[HKS_TRD]

You could do it with nitrous and no turbos?

[MR 1JZ]

yeah...with 250hp of gas

[Norbie]

250rwkw is generally considered the practical limit. That's not to say you couldn't do 300, but it would take a lot of doing and I'd say the turbos would be very fragile at that power level.

Why would you want to though?

[MR 1JZ]

Why would you want to though?

prove a point before removing them to replace with a T78 or similar...

there is a slight change the motor could become damaged in the process though...so not sure if its worth it

[Norbie]

I've seen a 1JZ destroyed when a turbine let go, so I wouldn't be taking the risk...

[BeRad]

haha could be expensive to prove a point

[ReQuieM]

I'm hitting just over 250rwkw with a 1j. Hoping to hit pretty close to 300rwkw with the new head that I'm building up at the moment. So I don't see why you couldn't get close. If its not tuned right tho you could cause some big damage.

If you do atempt it get your tuner to keep your fuel mixture a little richer then optimum to keep the EGT's down. I've got a theiry that the ceramics fail from excessive heat. Seams that the bonding material that holds the ceramic turbine to the shaft gives out and sends the wheel smashing around in the housing then out to your cat. They let go at all different PSI, heard of the japanesse running 21psi! but they have good fuel... bastards....

[2JZR31]

My MPH never went up when I ran over 19psi due to boost spiking. So I reckon that after a certain boost level power just doesn't go up anymore with the stockers. (I was not running any exhaust restrictors either) As far as I know, Southo is the only one that has come close. Most tuners say they run out of puff at not much over 270. But they might still be running the 2.25 Y pipe? Were you running one Southo?

I am not a big fan of dyno readings. I am 100% positive you could get a dyno to read 300rwkw with the stockers. But if that means a lot, I am not so sure. Maybe if you ran 2 no1 turbine housings (so you had 2 wastegates) and made twin dumps etc you could do it more safely. I don't think you could do it with a 2.25 restrictor in the exhaust. A big reason I got rid of my stockers was I was paranoid of blowing them up and destroying my engine. It does happen. Fucks me how, but it does.

[88MKIII 1G-GTE]

My MPH never went up when I ran over 19psi due to boost spiking. So I reckon that after a certain boost level power just doesn't go up anymore with the stockers. (I was not running any exhaust restrictors either) As far as I know, Southo is the only one that has come close. Most tuners say they run out of puff at not much over 270. But they might still be running the 2.25 Y pipe? Were you running one Southo?

I am not a big fan of dyno readings. I am 100% positive you could get a dyno to read 300rwkw with the stockers. But if that means a lot, I am not so sure. Maybe if you ran 2 no1 turbine housings (so you had 2 wastegates) and made twin dumps etc you could do it more safely. I don't think you could do it with a 2.25 restrictor in the exhaust. A big reason I got rid of my stockers was I was paranoid of blowing them up and destroying my engine. It does happen. Fucks me how, but it does.

Your exhaust sucks air back in as it blows, with a tunned length maniflod this greatly reduces the chance of the wheel coming off and going back the wrong way into your engine. That would be my starting point. Do you want a streetable 300kw or just 300kw as the second is too easy if you have the cash. Free spool the turbo's, turn em upside down dumping straight out the bonnet, methanol injection, nos, cams, 1JZ head, ecu, the question is not can it be done, but on what budget.

[2JZR31]

WTF? 1JZ head? Upside down turbos? The point is if can you do it without spending much money. If you wanted to spend enough to do all that other stuff the stock turbos would be the first thing to go in the bin.

Chuck, I think there is a low 11 to high 10 in the stockers if you push them in the Lux given that I ran 115mph with 300kg more. You would ave to get rid of the restrictor though. Seems that on SF people are really struggling to get 300 with high flows at above 20psi.

[allmtr]

Yeah it was just a question. I think I'll just plod along with factory power for a little while

[EldarO]

1Jz head on 2Jz = step backwards, we've been through this countless times.

Elmo.