I've been doing some research but haven't seen much discussion about the Gt40r turbo. I was leaning towards the t67 but my friend is a big fan of the garett gt40r.

My goals right now are 350-400whp with room to grow and I want my turbo choice to be a quality one.

Any thoughts or analysis of the two?

 

hmmm. i'd go with a 61mm turbo, able to reach 600+whp and also will spool great....looking at full boost by 3800-4k all the way to redline.

 

http://www.youtube.com/watch?v=0BbTk3D4tXY t67

http://www.youtube.com/watch?v=AwxfOxofKcg gt40

 

Both are too big for your HP goals. Avoid the lag and go with a 60-1. Inexpensive and very effective. Just make sure you get one with a 360 bearing for durability.

 

A 67 should do upper 300's low 400's on relatively low boost and if you want room to grow it definitely provides that. I originally had mine on a stock compression motor and lag wasn't bad at all.

 

I've seen both those vids and they don't say much. I like the idea of a larger turbo to run low boost for now, then kick it up in the not too distant future. Anyone know what the size difference is between the two?

Also, my friend was saying that Garrett offers warranties on their turbos so that if you blow it up, you can get a new one for ~300, anyone know about this?

 

I don't know about the warranty. I run a Precision unit and a basic rebuild starts at ~180-200 I think.

 

both are 500+ capeable. 30-35r.

 

i second this. the 30 or 35r will give you some blistering torque because they spool so quick.

 

I've run a 57/61/63/67/3582r/4082/4088r and your best bet is the 4082r, or if you can't afford it the journal straight 40. Great pump gas number, excellent transient response when compared to a 67, available with a divided housing, and room to move when you want more power, as well as lower IAT's.

^^^Personal experience, not internet hearsay.

Ian

 

This is the kind of response I'm looking for, thanks man.

 

This might be helpful, found this looking for compressor maps:

http://www.supraforums.com/forum/sho...d.php?t=456240

 

I agree ....the 40r is a much better turbo by far....lag is not an issue. i would no go crazy on the exhaust housing if you are concerned with lag.

 

I keep hearing a lot of good things about the quality of Garrett turbos. Anyone else care to chime in?

 

Now I'm considering the Gt35r after seeing this

http://www.turbobygarrett.com/turbob...R_714568_3.htm