1JZGE/1JZGTE basic questions (gearboxes etc)

[roadsailing]

from what i have heard the 1JZ is far better than the RB25, i know of one RB30 with an RB26 head that has caused a world of issues for the owner, but its not entirely the engines fault.

so the 1JZGTE and 2JZGTE bolt up to the same bellhousing? i'd expect them to being the same block family but havent had any experience with these bigger engines.

cheers all!

[EldarO]

In response to EldarO ..
Yes i have a dyno graph !!, But my computer skills are pretty poor will have to wait for my kids to down load it on the computer ..
I don't personally see the issue, is this a doubt thing or curiousity ?..

curiosity mate, i dont doubt ya, id wanna see what your AFR's were doing

i dont doubt people on the net, it really doesnt affect me anyway, im just curious

[EldarO]

oh and 2JZ and 1JZ are incredibly similar, they use same bellhousing, flywheels, clutch etc.

you can swap between the two.

the issue comes witht he gearbox, as there were a few different versions, where the shifter positions were moved around, from what ive seen, the JZZ30/JZX90 (probably more models, these are the only ones i know for sure) remote shifters are the hardest to find.

[lexsmaz]

EldarO, no worries, i probably get a bit too sensitive ? ..
My dyno graph only has rwkw & boost pressure, would have liked a AFR reading ..
Regards ..
Rob ..

[TOY CRESS]

how much boost dose a standard 1jz have

[JP]

My standard 1J with standard cooler and exhaust used to make 0.8bar.

[jak]

lexmaxs,

you will need to be running 18-19psi boost to get about 245rwkw. but you would want have a good flowing set of dumps and probably an adj exhaust cam gear before u try that.

if you want any more than that u will have to use nitrous with the stock turbos.

Jak

[lexsmaz]

It depends on if the exhaust is totally standard & too a leeser extent intercooler & air filter changes, i think its around 7 ish psi, with everything stock .. Mine with exhaust & different intercooler & pod filter is 10.5 psi ...

[EldarO]

ive got dumps, and 3" catless exhaust with one muffler in the rear (tee hee).

running 11psi.

[jak]

we have twin 2.5" dumps to the cat, then a 3.5" catback system and we cant get it below 19psi.

Jak

[TOY CRESS]

hi i am now running my 1j soarer with a 3 inch exhaust for the turbos with a high flow cat and a greddy electronic boost controller and with it in turned off mode it saids i am running 13.2 psi and the exhaust is to only mod can that psi reading be right.

[Jabtronic]

Yep that sounds about right. Mine has 3" intercooler piping, 600x300x100 cooler and a 3" exhaust with the standard dumps and it runs around 14.5psi.