BOOSTALMIGHTY7

iTrader: (1)

Would like to know what everybody thinks about this turbo? 90 lbs/min?

Howard Coleman

iTrader: (6)

thanks for the heads up...

from Forced Performance's site...

" The FP HTA&trade GT3794R turbocharger is the next step beyond the FP HTA&trade GT3586R in power production within the GT35R footprint. It combines the greater turbine flow found in the GT37 with the 90lb/min flow rating of the 94mm HTA&trade compressor. The compressor wheel measures 67.5mm inducer and 94mm exducer. The turbine wheel measures 72.5mm inducer and 66.5mm exducer.
This unit has a standard GT35R configuration, so it can easily replace an existing GT35R without modifying the header or manifold. It is available in either 3" vband or 3" 4 bolt outlet. No other turbine housing options are available at this time.

This turbocharger is recommended for applications running 40psi boost pressure that target the 800-900whp range. The FP HTA&trade GT3794R has exceeded 900whp easily during testing as well has running 8's in the quarter mile with trap speeds in excess of 160mph.'

here's my take...

the compressor specs out similarly to my GT4094 which will flow 80 pounds and make 600 SAE rw rotary hp properly tuned.

the hotside is smaller... probably due to the compact GT35 package.

comparatively:

cold side
average area sq inches

GT4094r 8.175

HTA3794 8.148

hotside

GT4094r 6.423 78.5% of cold

HTA3794 5.89 72.2%

the dyno sheet showing 850 hp checks out w the est'd 80-90 flow. 850 * .975 to correct to SAE = 829/ 1.3 to get rotary rwhp= 637 whic h is on the money for 80 pounds per minute.

while the hotside might be a tad small the concept of a 80+ pound per minute delivery in a tiny put in your pocket GT35 18 pound frame is appealing.

i also hold Robt Young of Forced Performance in high esteem.

a neat option. 2011 is going to plow some new ground w re to turbos.

howard

Boxer2rotary

iTrader: (8)

I believe the only current downside is the T3 footprint is all they offer right now.

If it is any help, I will have some good results from the 3586R shortly. I got it on the dyno but I have a pretty serious boost leak from my meth jets on the UIM. I had alcohol spraying 2' in the air.

Anyway back to my point. I stopped the tuning after the leak was noticable bad but I will say that at 21psi (which I am sure the motor is seeing alot less from the leak) my car did not drop off power all the way to 7500rpm. I know people claim the T3 35r falls off top end but not the 3586R so far

Boxer2rotary

iTrader: (8)

This is a rough tune around 17psi but if you look closely at the end on the video you can see the power stay steady. I know the torque isn't showing the darn clamp wasn't on the plug wire correctly my fault.

http://www.youtube.com/watch?v=CDPCl..._order&list=UL

BOOSTALMIGHTY7

iTrader: (1)

I hear they were coming out with A t4 version pretty soon. Maybe have bigger hotsides. Sounds good

silverfdturbo6port

iTrader: (26)

This turbo is going to blow most turbos out of the water. I made good power on my precision 67mm, over 500hp and the spool was fast but can you imagine this turbo when they come out with the divided t4. I dont see why a standard garret housing wont fit? the exhaust turbine is about the same as the gt35r so why not put the exhaust housing on?

BOOSTALMIGHTY7

iTrader: (1)

Full race twin scroll manifold mated to a t4 3794r hows that sound?

silverfdturbo6port

iTrader: (26)

well its official were buying one for the Evo and see how she does

BOOSTALMIGHTY7

iTrader: (1)

Might get I've for the fd

BOOSTALMIGHTY7

iTrader: (1)

One*

vitafist

I have ordered an HTA 3586r with T4 1.00 divided housing and Full Race manifold. In a couple of months i will tell you how it sounds!!!Waiting so long for this set up.....

vitafist

Boxer2Rotary what housing do you have on your 3586r and what rpm do you see 15-17psi??

It cannot be seen on the dynno. The power seems to be very stable from midrange to top.

BOOSTALMIGHTY7

iTrader: (1)

I'm pretty sure the 3794r will not disappoint me.

vitafist

Are u going to use it on a streetport and what manifold would u consider?Try full race divided. A little big in diameter should give you about 200rpm slower spool but you going to have plenty and steady whp all over the range.

silverfdturbo6port

iTrader: (26)

i thought about running this turbo on the 7 but if i upgrade its going to have to be bigger. The issue lies in the turbine wheel. the wheel is small like the gt35r, to4z, 60-1 and pt67's but when you start flowing more air like the 37 compressor then you build more back pressure in the exhaust and then that builds heat. Thats why you never see gt40 gt42 gt45 with small turbine wheels. You have to be able to get whats coming in to go back out. And a gt35 framed turbo would not make 700hp like a bigger framed turbo with out alot of work and even at that you still dont see gt35r's making no more than 550hp. Now 500hp is easy on a 67mm turbo so if thats the power goal then it should not be a issue. Just remember our cars flow alot more air than a 4cyl and thats what the gt37r was intended for, not saying it wont work but rotarys flow like 6cyl and 8cyl not 4cyl

Zero R

iTrader: (1)

It seems very comparable to a BW wheel (smaller inducer with a larger exducer), runs the same turbine as a 37R so pretty close to a P-trim. I would expect the similar response as a 67/65 H-cover. If a T4 can't be fitted I wouldn't bother.

~S~

silverfdturbo6port

iTrader: (26)

hes right its like the extended tip theory but if you cant get the exhaust to plow there is no point

Boxer2rotary

iTrader: (8)

My air fuel was 10.5 at the time of the video so spool was weak. I'm going on the dyno tonite and will let you know where I am seeing 15-17psi once I get a good run with mid 11 a/f. I also adjusted my Pim values in ly map so if everything holds together I will see how the turbo is over 23psi.

Boxer2rotary

iTrader: (8)

T3 1.06 housing. For the purpose of comparing it vs the other GT35R T3 variants.

vitafist

I do not going to compare it with gt35rs. I am thinking how mine with t4 1.00 will be doing!!! Divided manifold I suppose??? Brand?? How about response? What rpms are you see 15psi?

ScorpionT

iTrader: (3)

Apparently it has response slightly better than a 6765, and they will be offering the T4. They had so many people asking them to do it, and they had to cave.

BOOSTALMIGHTY7

iTrader: (1)

630 capable? Can it be done?,

Boxer2rotary

iTrader: (8)

Well on piston motors they have made 800 whp on the t3 3586r and 900whp on the t3 3794r so if you do a t4 for the rotary motors and do Howard's math. The 3586 should do 615 and the 3795 should do 690. That is dividing piston HP by 1.3. Could be way off as I feel 550 tops for 3586 but I will be on the dyno shortly with the 3586 to get some solid numbers on a street ported motor. Video to follow.

Boxer2rotary

iTrader: (8)

Okay the video is from my camera phone so not great but you can clearly see I get 16psi around 3800rpms 4th gear pull road tune 11.2 a/f.

http://www.youtube.com/watch?v=KFhWRWHeKbg

BOOSTALMIGHTY7

iTrader: (1)

How much power are you making in the vid?