Which turbo would you guys get?

[Spaniard]

Which turbo should I get guys? I have a non-ball bearing GT-35 turbo and it sucks. .58 hotside and .70 compressor. Made 350rwhp at 20psi. Anyways....I like the GT-37R from AMS with a .82 rear housing (capable of 750hp) or a GT-40R but I'm afraid of the lag.

I'm going to get a built head on my 1JZ soon, so that will make a big difference for a rev range and power.

EDIT: If people can tell me what they voted and why, that would be great.

 

[cnewingham]

I have a gt40 going on my car. I hear sppol is about 4000-4200rpms which is fine with me.

 

[becauseican]

I reccomend a DBB SP61/ T61 if you are looking for 500-600 whp. I run one on my 1j with a .58 a/r housing and I love it!!!. It makes boost as soon as you put your foot down, and full boost at 3700 rpm. I made 370 whp at 15 psi and 420 whp at 17 psi with a really rich tune. Some mk4 guys have made 600+ whp with this turbo. SP63 or SP67's are also really great too if you want more power, 67's can do 700+ whp.

 

[86_sports_1jz]

why not just change your .58 a/r on your gt35 to something like maybe a .81 a/r or bigger? that should help w/ more hp at lower boost but the spool will be alittle later

 

[drewgo]

why not just change your .58 a/r on your gt35 to something like maybe a .81 a/r or bigger? that should help w/ more hp at lower boost but the spool will be alittle later

I agree.

 

[tissimo]

Whats the exhaust side specs on the ams gt37r? Its just a dbb 67 right? But is ita p trim or like a gt40 exhaust wheel? My 67 was awesome on my old 1j. With the cams it was a FUN ride, full boost (i had a .70 a/r rear) ~4500 with cams and pulled hard to redline (7600). If its a dbb 67 (p trim) I say go for that for sure. The .81 will spool a little slower then mine (but the dbb will make up for that) and will make more top end power. That would be an awesome combo imo. I was probably making 450whp maybe more on 17 psi with my crower 264 cams.

A regular GT35 is a small turbo (like 52-55mm turbo) the GT35r got the 82 56 trim compressor where as the gt35s have a 52 trim 76mm compressor. They wont flow much more then 400whp.

 

[Spaniard]

The GT-37R is making 700+ hp on 2.3L EVO's over at AMS Performance, that turbo is straight sick! So I figured, I could take the same turbo and use it on our 1jz that is 2.5L of pure high-rev fun.

I thought about just changing the rear housing, but I want a DBB turbo. The SP67 is something I may want to consider, I have heard only but good things from that turbo.

My hp goals? 650+ just for the ego trip.

As far as specs on that turbo, I really dont know. I guess it's suppose to be a full size GT-35R, but the exhaust housing at .82 instead of .81.

GT-40R is appealing for more top end power, and daily driving I'm out of boost making good mpg. lol. Sort of.

 

[foreverpsycotic]

650+, talk to suprarich about a gt40-88

 

[86_sports_1jz]

if you are looking to build the head soon then don't worry to much about the spool time just go w/ a big turbo so later if you want more power you just have to crank up the boost and not replace the turbo like how you are doing now. i would go w/ something like the gt4088 or something bigger mayb the gt4294 for more power. it just depens on how much power you want to make

 

[Boostage]

I have a gt40 going on my car. I hear sppol is about 4000-4200rpms which is fine with me.

You mean full boost dont you? no way the turbo is JUST starting to see positive pressure at 4k.

 

[OneJoeZee]

You mean full boost dont you? no way the turbo is JUST starting to see positive pressure at 4k.

That's a safe assumption. full boost 4200.

 

[Spaniard]

I will be building the head and putting on the turbo at the same time. I want to rev to 9K as long as the turbo can flow that high, which I'm sure it will.

 

[86_sports_1jz]

that means you will need a .81 a/r for sure then, the .81 should keep pushing up to atleast 8500 rpms