Hey Guys,

I've been reading up a lot on cams and turbo's on HT lately and I couldn't find what I was looking for but did find some very helpful info.

Last season I ran a turbo,T3T4, not exactly sure of the trim or AR as it was an old rebuilt turbo and didn't have any info on it.

The turbo was great down low and spooled up fast, made 319 whp at 15psi at 6000rpm's but then flate lined and at 8300 it only made 330whp.

My setup is:
Ls/vtec
B16 Head
Port and polished
Brian crower dual valve springs
Brian crower retainers
Skunk 2 stage 1 turbo cams (will be changing to Type R or CTR cams this season. Good idea?)
Edelbrock performer x intake manifold
BBK 75mm throttle body

Cometic head gasket 70

B18B stock bottom end
Just has a girdle

RCAutoworks Ramhorn manifold
Tial 38mm wastegate
Turbosmart blowoff valve
2.75 intercooler piping
Mishimoto M Line 27.5" x 11.75" x 3"
3" DP and exhaust, run open exhaust at the track
My goals for this season are 400-450whp at 15psi

Trying to figure out what turbo would be best (trim/Ar)?
I've been told to go with a Precision 6262 .83 Ar but I've also been told that's too big...
Also been told to go with a gt35..

Should anything else be changed or upgraded or am I ok for my goals?

An help with my setup would be greatly appreciated!

 

Is price a concern? Because if not, there's alot of applications I could throw at you for that power goal.

Also, what fuel will be used, and what size are your injectors?

 

I'll be running 94octane pump gas.

My injectors are 880cc precision's.

Price range is under $2000 but I'd like it to be close to $1300... But I don't want to cheap out on the turbo... Looking for a journal turbo as well

 

Since you would like to stay journal bearing with good budget aside, I would look into the Billet Precision line, preferrably the 5557 or 5857, or the Borg Warner S200 series, preferrably the S256 or S258. Both will have similar spool characteristics, and will give you a considerably nice powerband for that goal. A standard Garrett T3/T04E 60 trim, or something in the 60-1 family will get you there, as well. And your 880's will support 400 to 450 whp on your 94 octane.

The GT-35R (this unit is ball bearing) and Precision 6262 are not bad choices, per say, but they are a bit on the big side for what you are trying to achieve. However, they will give you room to grow, should you decide to up your power levels in the future. That is, if you're set on buying just one turbo.

 

This is true. but it really depends upon what you're trying to do with the car. Perhaps you're the "as much hp as possible on pump gas", then you're in for a few treats. think reasonably on what you're using the car for. Street/strip. street/road course, all street, etc. THEN decide.

 

I plan to use the car for street/drag only... The car will only be used for 1/4 mile.

I just want a turbo that at 15psi I will achieve 400 to 450whp. I do plan in the future to build a bottom end and go for bigger numbers, but for the upcoming season it will remain a stock motor.

Will those turbos listed above allow me to easily obtain my 400 to 450 goal? Is there much room for growth from that?

Will I be able to achieve the 400-450whp goal and still have drivability and reaction with a larger GT35 or 6262?

I rev my motor to 8300rpm

The last turbo I had was similar to a Gt30 but probably a low AR... I was told it was time to go to a T4...

Thanks for all your help and input guys!

 

I was reading up on the Precision 5857 and it sounds like I'll have to push the turbo a bit to make 400-450whp!? Is this true?

Because I am on a stock motor I won't be able to push more than say 15psi..
Will the 5858 make 400-450whp at 15psi?

Or would I be safer going with the 6262 if I were to go with precision? Will the big 6262 not be good for my setup?

 

 

Lower your power goal until you can build your bottom end with forged internals and/or aftermarket sleeves. Keep it around 300 whp for now.

Alot of people do not subscribe to the "buy two turbos" deal, but I do, that's just me. If I want the best out of my "current" setup, and wanna build later, I'd buy a turbo to match my current goal, and sell it and get another turbo that will match my higher goal once I build down the road. I just see no sense in starting out really big "just because" I'm gonna build for more power in the future, then in the meantime, be stuck with a turbo that will have a less than desired powerband for the power I'm making, in terms of "street use".

The fact of the matter is, we Honda owners have small displacement 1.6 to 2.0L motors, therefore, we will never have the "best of both worlds."

 

I feel my power goal of 400-450whp is achievable and reasonable...
I've read about it being done all the time on a stock LS bottom end. I'm just looking for my best option for a turbo to achieve this at Low psi (15psi max).

 

edit*

nevermind lol

 

I think your power goal for the stock engine is not reasonable. Its risky... Possible, but very, very risky. in order to do this at the pressure you think that you might want, you'll need something over 61lbs/min to do that with at least larger than a 2.559" diameter exhaust wheel.

Just because you read it, doesn't make it a good idea

 

Not to hijack your thread but do you DD this setup at all? Reason im asking is im in the middle of building a LSV-T setup my self and had thought about putting my head on the stock bottom end with a Turbo setup and driving it while i build a shortblock but always heard about LSV's on stock bottom ends blowing up. How risky would 300-350 whp LSV-T be with a good dyno tune on the stock bottom end?

Edit: and i would use ARP headstuds and rodbolts. Also more then likely gonna be tuned on E85.

 

You're not jacking it that bad, but this question has been ask a billion times. It will only blow up if A) your LS/VTEC conversion was not good and the internal components aren't ready, and/or B) the tune was either not well done, or too aggressive.

Its not an LS/VTEC "issue". Its about whether or not you're doing your part to make sure that the setup can handle turbocharging. That's all there is to it.

 

Thanks for the help! see where the stock bottom end is next week with a compression test and go from there. Sorry OP bout jacking your thread.

 

35r called a day.

 

How insightful.

 

For 400-450whp I would go with a gt3076r all day. I have it on my integra currently and LOVE LOVE LOVE IT! super quick spool and perfect for the street. Its good for 500+whp with the right set up.

 

Sorry I'm cutting in the middle if ur post but i seen u guys brought up the gt3076r
Was thinking about getting it but wasn't to shure if it would be to laggy on my setup. Setup is poormans type r
Gsr block , arias 10:1 pistons 81.5 stock sleeves, eagle h beam rods , arp rod bolts, acl race bearings, balanced and micro polished crank, supertech block gaurd , b16 head , supertech valve springs and retainers, ferrera titanium turbo valves, skunk2 pro 1 cams, edelbrock victor x turbo mani , skunk2 70 mil TB, aem fuel rail, precision 1000cc injectors, neuken ramhorn turbo manifold, Garrett turbo smart 38 mil waste gate, 2.5 inch intercooler piping greddy type s blow off.

Looking to make 350-400 hp but don't know what turbo to go with? Can u guys help me out?

 

Once again. read from the beginning of this thread and ask yourself the question of the purpose of the car. Look at what you're trying to do and what your budget is. Read this from the beginning then decide. this is getting redundant

 

Just want an insight on other peoples opinions. Would help me ou alot,
But the cars gonna be some what of a daily driver, street race use. Take it to the track sometimes maybe. Dnt really have a budget but nothing over 2 grand. Can u help me out