dbs gs300

i have a chaser engine and trans in my 93 gs300. what turbo came stock on these engines. mine is the vvti motor. with everything else remaining stock how much boost can this turbo put up consistantly with out giving out. also if you were going to upgrade the turbo which one would you get

moejz

iTrader: (1)

I believe the vvti came with a ct26 turbo. You should be able to run 16 - 18 psi safely through these turboes...but unfortunately these stock turboes like any others will give out eventually . if it is a daily driver and will see occasional elevated boosting sessions then it should last a bit longer. The toyota turboes are unpredictable so its hard to say when they go out. The ones on the MkIII supras are also ct26, but they go out quick once you start boosting them too much . it could also depend on how the previous owner utilised the car.

dbs gs300

now how about the upgrade what turbo would you use i am looking to run 13-15 daily driving and turn it up to 20 or 25 when i want to have fun

moejz

iTrader: (1)

man there are so many. Look at what other 1jz onwers are happy with. It really depends on your driving style, personal taste, expected power level, purpose of the car etc and find something that is inbetween.

Look up http://www.modularturbo.com
They sell great turboes for an excellent price and have good customer service.

I'd say go with something like :
T61 .68 AR / for good street driving, quick spool and power close to 500 rwhp range.

T64 .68
T70

etc.

deknick

the chaser engine came twin, so really the question should be, what turbos are they :P

but you saying, what upgrade is best. well there are MANY options, anything from USDM twins, to large single, and talking about PSI you wanna run, means **** all.

if you get a large single, you only need to run something like 8PSI to get the same power the twins put out at 18PSI.

dont' base your turbo upgradeo nthe PSI you wanna run, that's ****ing retarded. base your turbo upgrade on your budget and the POWER you wanna put down

Triple C

iTrader: (2)

Well said Deknick

dbs gs300

are you sure this motor came with twins because i was told this motor is stock with a single turbo. i can not find a tag on it but it does say toyota on it any way thanks for the info. when i upgrase the turbo and manifold do i do away with the intake piping thats over the exhaust

2turbo4u

Post pic of your engine..

Kstyle55

Im sure if its the vvti motor it has a single turbo

deknick

if yours are stock, they should be the normal CT12A twins. where as the 2JZ got the CT12B in USDM's and CT20's were in the JDM 2JZ's if i recall right.

depending on the year, yes they did come single turbo, but only with a CT15B? i think?? something like that.

it should still be ceramic

moejz

iTrader: (1)

as I stated above, the VVTI engines are single turbo not twins. Non VVTI engines were twins and ran ct12 ceramic blade turboes which were un-reliable by the time it reached our shores.

The VVTI chaser engines comes with one CT15B turbo.

deknick

when were chaser legal to import into USA?

my 2J has ceramics and they're still boosting strong at 17PSI

Wicked SC

iTrader: (3)

Chaser motor(1JZGTE VVT-I) came with a single turbo not twins as stated previously...

nghty89

If I can chime in, the CT26 is what came stock on my 7mgte before I got rid of it. I would not push more than 12-14psi unless you rebuild it and put a 57 trim wheel in it.

www.supramania.com has tons of info on the 1jzgte motors. My friend has one in his 91 Mkiii and it is a beautiful thing Fun as hell to drive with the stock twins.

No idea what came stock on those motors, I'm a 2jz and 7mgte guy

jmax.garage

iTrader: (2)

I second that, VVT-i 1JZ's came with one turbo and indeed it is a CT26. Checkout http://jzxproject.com/ and ask them wassup; pretty much 1jz goodnes forum. Say kidzik reffered you