thumpstick

another turbo fitment question:

I am looking to turbocharge a stock 2002 LS1, my question is would a single GT3582R ball bearing turbo with a Tial 1.03 a/r turbine housing be too small for my motor? I plan on running no more than 8psi with this turbo, and I am looking to make between 500-550 whp.

The reason for choosing a small turbo is to minimize lag as much as I possibly can, plus I can get a deal on this turbo. What do you guys think? Is it possible?

Thanks guys,
-John

Super Slow SS

iTrader: (9)

front mount? I assume yes because you will have to run coolant lines to that turbo, I think it is a little small, and i think you would better benefit from a smaller ar and larger turbo if you are most concerned with spool time. Just my first idea, although I think the turbo will get you to your HP goal.

thumpstick

yes, it will be a front mount... it is going into a 93' rx7 with an LS1 swap, and thanks for the input!

Super Slow SS

iTrader: (9)

Off topic, but what happened to the wankel?

Ohh and this is what your really looking for: http://www.projectrpm.com/nelsonraci...600hp_RX7.html

thumpstick

I blew a few of them up... turns out they work great in theory... but as soon as you start with the power adders they go to sh#$. Anyway, I couldn't bring myself to sell the car, it is just too sexy so I looked into the LS1/T56 swap and I was sold.

before:


after:

Super Slow SS

iTrader: (9)

just Sexy

thumpstick

haha, thanks

sultan(ZR-1)KSA

if you are planning to do trakctor pulls i think it is a good choice other wise go for a beger turbo atleats a gt40

black98ws6ta

iTrader: (77)

Possible but not optimal, I would put the largest exhaust a/r on it that you could.

thumpstick

The 1.03 is the biggest turbine that I can find for the gt35... do you think that will be enough? I know it is not the most efficient, but I am willing to give up some top end for spool time. I feel that the gt35 will be more than capable of reaching my power goals, I just want to make sure that it can do so a reasonable boost level (8psi or so).

thanks again for the input guys!
-John

z28adiction

iTrader: (1)

I know they make the 35r in a 1.06 as i plan to run 2 of them. And if you want to make that kind of power with that amount of boost, people seem to have good luck with the T76 turbos. I know 35rs love boost and love to be spun to make there power. i know its only on a 2.4 liter but look at the evo guys they spin them to over 30 pounds but make great power. and a stock ls1 will not like high boost at all. Im not saying that a 35r wont reach your goals under that boost level, bc most guys dont take that route bc they can run a nice 76mm for less money than a 35r and have been proven to make 500 to 550 easy to the wheels especially through a stick car at the boost level you are looking to run.

nuclearxp

I think a GT35 is awfully small. Even with a 1.06 A/R you'll be pushing that turbo awfully hard, even at 8 psi. If you're not going intercooled (which i think you are), otherwise forget about it.

thumpstick

I will definitely be using an intercooler. I will be using a large bar and plate front mount with a 2.5 in inlet, and a 3 in outlet.

engineermike

Too small. That's a 61 mm turbo. Most folks say a 76 mm is too small for the ls1. Plot it on the compressor map and you'd see that it's in choke and <<60% efficient, which equates to high IAT's and lots of exhaust pressure. Consider at least a 70 mm turbo.

thumpstick

ouch! thanks for the info though... exactly the stuff I wanted to know though. So on that note... what would be the smallest GT series turbo that can be used? GT37? GT40? and what a/r am I looking at?

engineermike

The smallest I would consider would be a GT4094R. At 8 psi boost on an LS1, it's about 65% efficient and not in choke.

thumpstick

This is what I found for the GT4094R, I think I got the 8 psi on the comp. map correct (let me know if I don't). My next question is which of the four turbine options would be best for my application?

engineermike

Looks good-ish. Definitely go with the largest AR available. The GT40 is borderline too small so exhaust pressures will be high to begin with. The largest AR will help bring that down.

DrTurbo

iTrader: (3)

TC72 would be almost instant spool. Very compact unit as well, no bigger then a GT35R.

thumpstick

Really? Where can I find some info on this turbo/how much will it run me? That would be perfect since packaging is also a bit of an issue for my build.