I've tried searching for the parts to rebuild it. It's a great little turbo, quick spool, maintains boost throughout the power band. But I can't rebuild. So I'm looking for something that will produce the same results, but I don't know what works well for these engines.

 

Those are all very decent chargers. Problem is, they come in different turbine a/r. I don't know which one is best for my setup. I do have the fuel system to support 500 whp on my current set up, but I don't want to run a turbo that leaks oil and that I can't rebuild. Thanks for your input.

 

I'm running a T3 S366 w/ .85 A/R hotside... It spools up quickly, and can make more boost than you will reasonably need.

 

Good to know. I'm looking at a T4 twin scroll with .84 a/r hotside...I'm thinking i'll have plenty of power to spare, thanks to your account

 

If i were you i'd call apex usa and see what they can do for you.

If you like the turbo that much, it couldn't hurt, could it?


I'd like to see a pair of small ball bearing turbos on an s4/s5 block. like maybe hks gt2530's.

Problem is that is so much money for 500 quicker rpm spool that it would be a waste and NOT so cool and a single gt35r would be cheaper. Oem nur spec skyline ball bearing twins could be the hot ticket. IIRC, non nur turbos maxed out at 17psi before the ceramic turbine wheel would fall off/grenade and the nur specs had inconel turbine wheels.

 

That would be cool. I had schematics drawn up for a twin-turbo manifold, not like stock, that would accomodate something like the twin GT2530's or GT35R's, one with small a/r, one with large a/r. I based it off of a block mount flange from a cheap eBay kit and then welding all the pipes and flanges for the turbos and wastegates myself. I need to get into my engine bay to see if this will work...

 

You should give that a go and post your findings.

Did you mean twin 35r's or a small gt25 spooling up a gt35r?

 

Im no expert but i was told that a .96 backside on a T4 turbo is by far excellent on the street. Very strong from mid to top end.

I have a Garrett T04R (67mm sharpend compressor blades) a/r .70 and Divided 1.00 backside T4 Long runner manifold and D-shaped ported exhaust for the "500+ rpm" increase in spool up. 1000cc primes 1680cc seconds.

Was told by a friend / tuner / employee who built my set up @ injector dynamics here in AZ that id make about 480hp @ 15lbs pump gas. <-- Car has yet to run and be tuned for 15lbs but i dont see why not. Id like to step it up to 2000cc seconds (more linear, better atomization), tune and eliminate Inj Lag that the 1680's have.

My friend Aaron (injector dynamics guy) has 4 x 1000cc Equal length Intake and Exhaust manifolds, Holset (similar to 60-1 in size 1.15 backside) turbo, bridge ported, Square Race ported exhaust, says from his calculations with a high xx base fuel pressure and maxing injector duty cycle (95%), he calculates his tune to be about 400hp @ 8lbs pump gas. <-- in a FD

 

That 400 hp set up of your friend Aaron's, is about what mine is supposed to be doing with the Apexi turbo. I just keep getting matched for acceleration by 300 hp Firebirds...kind of embarrassing. Plus, like I said before, oil seal busted, so when I get a chance, I'm going to contact Apexi USA with the serial and see if I can't get a replacement seal and salvage this charger...it still spools wicked quick. I'll look into that .96 a/r and see what's available, seems a bit on the large side, but these rotaries are a whole different beast...who knows?

 

I mean like a .50 or a .63 GT25 on manifold in front of a .96 or 1.06 GT35R. Gt25 spools to 0-2 psi and GT35R spools for 12-14 psi, depending on tuning. I know it sounds confusing, but once I have the whole thing done up, I'll post the pics of the build

 

Sequential, eh. Sounds sweet!

I was thinking something more along the lines of parallel setup. These are twin gt28r units.

 

Yea his acceleration is pretty quick.
Simple reverses and 1st gear normal acceleration that turbo is already whistling...
1st to 2nd if you launch @ like 2500 rpm spins the 255 / 40 Advans like butter...
But as far as pull to top end its like 4500-9000 and the feeling is bliss...
The car just dips and ur in the seat till he lets up.
Id say his set up is perfect for mid to high speed drift since u have to stretch your slides out.
But hes the road racer type. So i understand when he says its nice to have 400+ hp coming
out of a turn.

One day i'll get there...
******* haltechs... hahaha
they take forever to do repairs...

 

That's beautiful!!!! Pretty much what I'm looking at doing, but instead with different a/r turbine snails, and externally wastegated...because I like doing things the hard way That's a wicked set up, though!

 

Yeah, the accel sounds about right...except I have a ton of smoke flying out my exhaust pipe while boosting...oh well, at least I can effectively say that I "smoke the competition"

 

Does anyone have any experience with the Garrett GT-Series GT35R on an FC, and what were their pros and cons that they felt they had with this turbo?

 

Check the "single turbo rx7" section out.

Alot of gt35r info there.

Remember, there are t4 and t3 specific hotsides and multiple housing/wheel combinations.....