I know these both have the same sized compressor wheel but the T04R has a smaller size turbine wheel.

I am wondering what kind of effect this should have on low levels of boost? on an FD.

 

both of these spool real quick on rotarys. I have the t04r. Its old school but its stood the test of time

 

A T04R is significantly larger than a GT35. It has a 67 mm inducer, the GT35 has a 61mm inducer and 82 mm exducer on the larger one and the GT3574 is smaller than that.

 

?

The GT3574 has the same compressor wheel as the GT35R (82mm exducer), and a larger turbine wheel (74mm vs. 68mm).

 

I'm sorry, I thought you meant the GT3571, which is in fact smaller than the GT3582. There is no GT3574 listed in the actual Garrett catalog available online.

 

I think the gt3574 is A-Spec custom Turbo.

Eddie

 

yes indeed. it is an a-spec custom turbo. I'm currently in the final stages on installing it on my rx8.

 

T04R will be good for more boost and more power at a slight loss in spool. both turbos use a P-trim exhaust wheel, so with the T04R your needing to move the extra inertia of the larger compressor wheel.

What do you use the car for? ive got a 3574 on mine and does exactly what i need it to at the track. If i was drag racing tho id have gone T04R at a minimum

 

The car will never be dragged, ever. Looking to run really not that high boost 10-15psi max, probably 1200cc secondaries for better atomization than 1600's, want similar spool to stock full boost before 4000rpm.

 

Depending on your setup both will give you full boost before 4000. given what you just said id look at a T04S with a .84 divided housing. That will work very well on a stock port to medium street port motor, should give full boost closer to 3000rpm than 4000, flows more air at low boost than the 35, and still is capable of over 400hp...

But the question has to be asked if thats what your looking for why go single, a good set of working twins will easily put out 350 whp and cant be beat for response

 

Heat generation, retention, reliability, simplicity, ease of troubleshooting, accessability.

 

Is it just me or what Rx7Store calls "T04R" is what most of us would refer to as "T04S" here is the link:

http://www.rx7store.net/product_p/garrett%20t04r.htm

The way it looks in the picture it looks as though the intercooler side of the turbo would be facing straight down when installed or would it be straight up?

 

it would be facing outward towards the wheel well in that pic, the compressor housing can easily be clocked for fitment and the routing of the ic pipe

 

hey GAMBEAN, good to see that you are finally going turbo. i remember when you were selling your house, how's everything?

 

Looks like a T04-R to me. Alot of places use that pic for that turbo like ATP etc.

 

hey whats going on pistones. everything is good my way. thank god. I'm almost done designing my manifold for the gt3574.

I have been taking my time on this project for over a year now. it's coming along great. I will catch up w/you later when I'm closer to actually breaking in the turbo


bino