What do you think about such turbo?

[Mr. Y]

Cold size:
- GT4294 wheel
- antisurge 0.7 A/R housing

Hot side:
- T3 stg 5 wheel
- 1.15 A/R housing

Center:
- journal water cooled bearings

It's going to be installed on 1.5 JZ... What aprox HP (with supporting mods) will be at pump gas? Where this snail will hit full boost? What powerband will be?
Does such coldside/hotside combination look balanced?

PS: please don't write "fuck that turbo, go proven unit"... I just need some opinions about this turbo...

Thanks!

 

[IJ.]

It's big and the AR is huge on a 2.5L motor....

 

[Mr. Y]

1.5JZ is 2JZ block with 1JZ head... so we have 3 liters of displacement ;-)

 

[IJ.]

Road car or track?

AR is very loose for a road car
(even with the extra 500cc)

Also how hard are you going to rev it?

 

[Mr. Y]

Car's owner hopes it will be road car... but I doubt, so I need extra opinions to prove/discard my thoughts...

BTW, don't you think T3 wheel will be a restriction with that huge compressor?

 

[IJ.]

That would explain the horrible AR!

I "think" surge will be a huge issue with that combination.

 

[Mr. Y]

as for Rev... Apexi Power FC standalone will be used, so rev limiter is not problem. But valvetrain is basicaly stock (p&p + 272 cams only)

 

[MK3Brent]

big cam for stock springs

 

[Adrian98]

I still don't understand people's obsession with a 1j head on a 2j, years ago it was done as a means to raise the rev limiter on a 2j back when ECUs were expensive and when aftermarket springs were harder to find.

non the less that's a huge turbo for a street car. they are not really fun except maybe on the freeway

 

[QWIKSTRIKE]

That turbo will be bottle necked with a t3 hot side. Hell there may be a lot of surge.

 

[MK3Brent]

Area is area.

 

[AF1JZ]

I still don't understand people's obsession with a 1j head on a 2j, years ago it was done as a means to raise the rev limiter on a 2j back when ECUs were expensive and when aftermarket springs were harder to find.

Because the majority of people that do the 1.5jz are origionally 1jz owners. It is cheaper and easier to just get the 2jz block later if they choose to. Wiring is already done and it virtually drops right in and you get .5 liters more.

 

[Mr. Y]

AF1JZ
You are right. Same case here.

MK3Brent
What do yo mean? That 1.15 A/R with stg.5 wheel flows the same as Q-trim, e.g. or something else? Wouldn't you explain please?