HKSGT2835 turbo and 11sec

[wyld syd]

im working on planning out the build of my car. the shop that i am usuing wants to use the HKSGT2835 turbo to achieve what they think will make 480hp and a flat 11 quarter time. do you believe that turbo can make that power and propel a 95 240 to that 11 sec flat time?

[Jeff240sx]

You're paying a shop to do the thinking for you.. and the building for you. Then you're going to ask me to think for you and not get cash. :aw: Trust your shop if they have your car. If you have doubts, take your car out of their hands. Until then, dont second guess them. And hey! If they fuck up, you have someone to blame and not just a faceless user behind a keyboard.
-Jeff

[FRpilot]

:werd:

[sykikchimp]

I think he's just trying to find out if he should trust them..

I've heard of 240's running low 11s high 10's with 400-450hp with the right driver. The 2835 should be able to get at least to those #'s.

Are they rebuilding your engine too?

[wyld syd]

whoa i didnt expect to get beat up that bad, yeah im having someone do it bc well, i dont trust me to do it. ive heard mixed things about that turbo is all, and im not sure if it can make the power.

the motor is not here yet, so we have not talked about the rebuilding. however, they say that the bottom end and the tranny will BARELY handle it, yet they still think it will. im sure you guys can answer that one through experience and friends experiences better.

thanks for your input

[SR20DETpwr]

Are you talking about a redtop sr motor here? If you are that motor is extremely strong and shouldn't need to be rebiult as long as it is tuned properly. Enjuku racing has pulled 544rwhp out of the sr's stock internals w/ the right tuning.

http://www.teamenjuku.com/racecar.html - mod list

http://www.enjukuracing.com/ken/racecar/544.jpg - dyno graph

However, if you still don't feel safe with those facts I would reccomend you have your motor rebuilt to be on the safe side. Also, don't forget to upgrade the factory oil pan to the greddy baffled one (adds 1qt. oil capacity to the motor) - a lot of people overlook that step and it is a must have when trying to go for that much hp. I plan on stopping at about 300-350whp, so good luck man.

[wyld syd]

indeed it is a redtop sr and there was no talk about the oil pan so i will be sure to bring it up, thanks!

[sykikchimp]

a greddy oil pan is not necessary. I've seen it done several times with the stock oil pan.

and MOST guys with big hp SR's don't recommend running over 400-450hp on the stock bottom end daily. I don't know ANYONE with over 500hp on stock bottom end that doesn't expect it to let go sooner or later.

[Jeff240sx]

Be prepared to drop a ton of cash for 500 rwhp. You'll run out of spark, clutch, fuel on 1000cc injectors, and around 540 you'll run out of cams. Also you'll break trannys on the launches at a strip. There is a guy in Okinawa now with around 400rwhp and is giving some abuse to his OS Giken tranny. Why 500hp anyway? And yea, Scott at Secret Services (owns #2 hp sr and tuned Enjuku's #1 hp sr) is running 339rwhp, and I've talked to him a few times.. he is very sure the motor will let go, and has a back-up motor already. I'm sure Enjuku has a few backup motors, seeing as they are a race team. Stock bottom end I'd trust to 400hp or so.. over that is asking a motor to handle more than 2x the stock output, and they won't do it nicely.
-Jeff

[dankS14]

i plan on doing an upgrade turbo this summer. i was thinking about going to 400 maybe up to 450RWHP at the track...
this is going to by my daily driver so i was only going to run hi boost at the track and keep it on low boost on the street.

i was looking into some of the HKS turbos as well...it seems that the HKS GT2835 is one of the most popular HKS turbos in japan for alot of motors as well as SR20s. Another good one to look at is the HKS GT-RS..its a little newer than the GT2835 and supposively has quicker spool.

i have seen the GT2835 support around 450, but that was also with alot of other mods, internals, cams, and good tuning. it also depends on what wheel/housing trim you get.
if you go to HKS japan website, you can see the GT-RS dyno..i believe it made around 400HP at 1.2 bar. thats probably what i will be shooting for this summer! i like quicker spool but also want higher HP levels...i believe the GT-RS will get very close to the GT2835 in HP levels as well as having a quicker spool! one difference between the two is that the GT-RS i believe has an internal wastegate where as the GT2835 has an external wastegate...
but if i were you i would think about doing internals if it is a daily driver and if you think you want to run around 450RWHP. that is alot! i will be happy with 375-400ish...i probably wont go over the 400RWHP mark b/c i dont wanna do too many internals...just the easy stuff( headgasket, RAS, etc) but you can always squeeze out more power with cams and tuning, but that will also effect your powerband, and fuel consumption...there are alot of things to think about when choosing a turbo..do some research and make sure that is what you want before you spend the money..there are also alot of other popular turbos like apexi, greddy, tomei, Garret, AGP turbos, etc...dont let your shop do the research for you! Only you can decide what you will like. Each turbo will make your car drive totally different! Good luck on your quest! :bow:

Jon

[SR20DETpwr]

Jeff, you seem to have a lot or at least some experience around some of the major sr tuners. I agree with everything in your post. You said you would trust the motor to about 400hp and then upgrading the internals would be a good idea. How much crank hp from the cars you've seen would it take to make it to 300-350rwhp?

[steve shadows]

but here is a better question my friend what are your goals? are they simply aimed towards drag racing or drag racing and top speed like my own car or are they aimed at balance like a high 11 and the ability to corner hard and whoop ass in the mountians as well.

I have done 11s , high 11s so far with a stock sr20det redtop engine only internal mod is rocker arm stoppers, the car is barely stripped, stock suspension with lowering springs in front. i don't know if a 2835 will be enough, and why hks? why not a garrett turbo or precision, hks are overpriced. i purchased my 62-1/t3 hybrid turbocharger for 700 brand new with ball bearing center section. this turbo has been proven to over 500whp on sr20det with stock displacement. there is A LOT of bs floating around on the strength of the stock bottom end to "it will only last this long" etc etc. scott drives his 539 whp car daily and has been doing it for the last 6 months i belive. I drive my car daily 350whp on pump gas 390+ with a little 110 mixed iwth the 91.

if you want to get a lot more specific shoot me an email and ill get back to you with some really detailed stuff and some important questions you should be asking this shop before they steal your money and run over the hill...

[email protected]

-steve

[wyld syd]

i never said i was goin for 500hp, yet i said it was close. it was not my idea either. the goal is to hit an 11 flat and thats primary goal over handling, yet i know thats not what the car was made to do, but its what we are going to do. the budget is around 12 grand, and my shop thinks they can make 480hp with 7 grand, but my calculations show more like 10 to 11 and thats not internals, i may have to wait a few months if i have to do that too, but thanx for your inputs so far!