Durangosc

I was wondering if you knew of any reason you can't swap a 1jzgte into a 1998 sc300 with the vvt-i? Anything that would make it more difficult or if I need a 1jzgte vvt-i to do the swap? IS the wiring the same? My other question is, I live far from anyone that can tune my car, is a 1jzgte swap better than trying to tune my own NA-T? Thanks For your help.

StiCk3

iTrader: (5)

i remember looking into a VVT-i 1JZ a while back and it turned out it would cost much more than a normal 1JZ. They cost more and i've had trouble sourcing a VVT-i soarer motor set. Wiring is the big question too, im sure the harness plugs into the SC body, but after going through starting problems with my engine, i wouldn't be surprised if a few wiring pins are switched. Lastly, and this was the biggest setback, finding OEM and aftermarket parts for the VVT-i engine. Gaskets kits, turbo upgrades, etc. are hard to find on this side of the world. That was my biggest fear so i went with a non VVT-i setup on mine.

g4ebguy90

I am glad I have a 1997 now. I can't imagine it would be that big of a difference would it? I mean its just head internals and sensors right?

account2x

iTrader: (5)

I would go with the vvti swap. You'll have replacement parts off your current vvti ge such as coils, igniter and vvti actuator. 1jz-gte vvti has higher compression ratio so it's better off boost and the single turbo builds boost faster. 1jz to 1jz vvti is a larger upgrade than 2jz to 2jz vvti. The hardest part about a 1jz vvti swap is if you ever want to go singe turbo finding a 1jz manifold but a few ebay vendors sell them.

stockhatch

iTrader: (12)

I would NA-T it. The 1JZ VVT-i is a great engine. Even so, once you move away from stock and need to buy performance parts or more importantly, tune it....good luck!

Durangosc

So you are saying it will be easier to Tune a NA-T vs an upgraded turbo set up on a 1jzgte VVT-I?
Also is there and issues with the ECU when swapping a older non VVT-I into my VVT-I?

scENFORCER

^ it says Chaser..

account2x

iTrader: (5)

It's clearly Soarer

stockhatch

iTrader: (12)

I take it back. I forgot you are already VVT-i. It is going to suck to tune regardless of the engine you go with, but your 2JZ rods are weaker than a VVT-i 1JZ set. I change my recommendation to the VVT-i 1JZ

88supramki

It's a soarer, i've confirmed it from the seller personally. i was looking at it at one point.

cartmill

iTrader: (3)

just wanted to clear up some misinformation here, as i have actually owned a 1jzgte VVTI:



exactly which parts are you referring to? i had no problem finding gaskets/coils/wires/parts/etc. for my 1jzvvti. most of the engine is normal 2jz/1jz stuff...
i guess if you're looking for complete engine gasket kits, then yes, you'd have a problem. i had no problem replacing my front and rear main seals, ignition coils and spark plug wires, valve cover gaskets. the turbo is kind of strange, but driftmotion sells an upgraded stock turbo and the ct15b downpipe flange if you want to upgrade, and there are some chinese t3 and t4 manifolds out there for it if you want to do a full turbo upgrade.

it's basically just a 2jzgte VVTI with a shorter stroke, single turbo setup, 9.0:1 compression, and the is300 ignition system.

they are sweet engines. i got 27mpg on the highway with mine when i went on a road trip, and i dyno'd 255whp @ stock boost (10psi) with a stock exhaust... on a dynodynamics dyno.

this is not true.


also, account2x, the 1jzgteVVTI turbo actually isn't really an upgrade in airflow over the older 1jzgte twins. from what i've seen, the twins always dyno higher (~330whp), and the 1jzvvti people usually don't make it much over 300whp. it's not exactly apples to apples, as the turbo setups and engine compression is different, but the earlier 1jzs usually make more power on the stock twins.
the vvti had insane boost response though. mine would hit 10psi by like 2300rpms with my stock exhaust.

cartmill

iTrader: (3)

OP, the real problem with this swap is the fact that you have a 98+ SC300.
i THINK the stock alarm goes through the stock ecu like on the is300 so it's difficult to have everything work when you replace the ECU with a standalone or other stock ECU (someone correct me if i'm wrong here).

Durangosc

Does anyone know much wiring there is involved in swapping a 1jzgte vvt-i into my 2jzge vvt-i? are there enough resources to accomplish this?

88supramki

If you get the 1JZ that you linked to on ebay, there will be VERY minimal wiring that needs to be done aside from lengthening the harness. If you're going to do it, better snap that one up other wise you need to rewire and swap out the oil pan just for starters.

cartmill

iTrader: (3)

you gonna drop it in with that front sump pan on there?