In the case that the car is kept and ever gets built, i was curious what single turbos out puts would be with all applicable bolt ons(fuel, stand alone, etc...) and STOCK PORTS. I know ernie T has ran 10's, but i dont know if he would have a good street/road race turbo. I know ideally i would want to port the engine, but im just curious about this certain situation. I will be porting, but its something that i just needed to ask. Kinda curious on both ASPEC kits, GT35R and GT40R.
kris

 

Any of the kits you mentioned will suit you fine. Without porting, you will loose a little bit up top, thats all.

 

cool, i want low end mid range punch. Wouldnt mind the bigger 40R. Any HP claims on what the two turbo kits would put out on the stock ports
kris

 

Go with the GT35R it's a good turbo especially if you want good midrange. I don't think you would be satisfied running a GT40R on stock ports, you might be displeased with lag and it wouldn't pull up top like a ported motor. So, I recommend you get the GT35R, T04S, or a PT67GTQ. Any of those you should more than happy with, and can take you to 10's on stock ports.

Alex

 

I agree with Alex. The GT35R is a good choice for stock ports. Assuming zero port overlap, you will get the best response at low to mid-rpm. The boost will fall off at high rpm. However, since you are probably going to drive this car daily, high rpm boost is going to be what you're looking for. I suggest using the GT35 with 0.82 A/R for the best response .

 

GT35r definately. I have it on my car and for street driving it's great. With my large street port I was seeing 15 psi by 3400-3500 rpm and it has a great kick. More importantly it's just a blast to drive around town and still has plenty of power to open it up on the highway and backroads. A-Spec's work and build quality is top notch if you choose their kit you will not be dissapointed!!
-Nic

 

Im beginning to think that the 35/40 will be my way of living. 40R is a new turbo lots of hype and im sure worth every penny. Is 400WHP attainable with stock ports fairly conservative A/F and the gt35/40? I just get tired of the pesky '03 Cobras. I will see how money sits. If i port, i will be going GT40R. BTW, do you do engines Aspec, and what is the deal with the S2K kit. My buddy has been waiting
kris

 

I am in the same boat as you, running stock ports for now but nowing down the road I will be running a ported motor. What I (we) came up with is gt40r running smaller hot side (.84). Should spool plenty fast and give enough power for now. Once the ported motor goes in then off the turbo goes for large wheel.... We will see!! Everything is on just a few small items to do..

 

"for large wheel"

oops. I meant "larger Housing" .....

 

without a doubt run a 35R before you think about a 40R.. alot of people go with the "biggest and baddest" turbo on there car and then hate the way there car responds to it. the 35R is a great turbo and your car will still be fun to drive!

good luck either way though!

 

i am going to get the 35r in feb 05!

 

I think the 35R would be more usable then what i want. I need to stop thinking like the people i hang out with. They all need to have HIGH HP numbers and are into drag racing. i want a track car with decent top end. decisions. Ill wait till the money decides what i do
kris

 

Remember not to go overboard when it comes to turbocharger sizing. Personally, I would go conservative. Do some research on these turbochargers before you **** your money away .

 

Not sure how it would be more usable than what you want.

 

450hp(ported engine) 400hp(stock engine). Im throwing too many ideas around right now. Im sure it will be between the two garretts from Aspec.
kris

 

I think he means "more than suitable" for what he wants

Quick question, what size dump pipe does a 40R require? Does the different A/R exhaust housings require a different exhaust size?

 

40R setups I run are using 2" dumps A/R does not effect DP size They all come with a standard 3" v-band outlet

 

Yes that is what i meant. Sorry for the terrible english lesson to all. ZERO, how would the spool charectaristics(sp) differ on the same ported engine(large street port) between the 35r and 40r. i know its a broad question...sorry
kris

 

Only a 2 inch dump pipe? You don't find it a little small? Where in the system do you enlarge it to 3 inch?

Is it possible to get a 40R that will accept a larger dump pipe, like a 3 or 3.5 inch?

 

its not the size of the downpipe...wait thats something else.
kris

 

I'm currently running a 3 inch system, but i know a 3.5 or 4 inch exhaust will make more power, and will have less restriction, hence why i thought 2 inch was too small! It'll just cause back pressure.

 

Dump pipe he is reffering to is the wastegate dump, NOT the down pipe. Those turbos have a 3" V-Band out (as Zero already said) and the rest of the exhaust should be 3" minimum, 3.5 would be better for spool and overall HP.

~Mike...........

 

Thank you, that's makes much more sense