Stock Turbo

[abcent]

I have a freind who is in need of a new turbo for his 33. He's not chasing big figures, just wants 175-190kws kinda thing. His main concern is response, wants to still be on full boost by 3500rpm or less.

Can the standard turbo be re-conditioned to be able to cope with say 15-16psi reliably? is this out of the question? I've heard R34 NEO turbos are a little better, anyone tried?

only interested in bigger turbo's if the will 100% hit FULL BOOST BY 3500rpm like the stock turbo.

I'm too lazy to go through the gazillion pages on here about turbos....so no, I wont use the search button

thanks for any help or advise

Berin

[R31Nismoid]

tell him to just get a baby turbo, HKS 2530 comes to mind

[abcent]

yeah thats what I was thinking, but arnt they still a little laggy? also a bit above what he's got to spend

[paulr33]

you can make 170 with the stock turbo

im making 190 with the stocker fine

comes on just at 3 grand

[abcent]

what sort of boost you runnin paul?

i guess I really just want to know is if he gets the stock turbo reco'd, is there any way of making it stronger an able to hold say 1bar boost

[paulr33]

12psi. running more than 12psi makes no more power.

it just pushes the compressor pasts its effiency and it dials in more hot air. it you run it on 12psi with a good tune, good exhaust you should make just on 200rwkw or a touch under, 190 sounds a bout right

[The Dan]

If you highflow the stock turbo ($1750) they will replace the shaft and turbine wheel with steel ones. The housings are bored to a larger diameter to fit the larger wheels and can be left alone or cropped to move the power curve further up the rev range. Highflows are good for around 18 psi reliably.

[WazR32GTSt]

HKS 2510?

[abcent]

I have a hi-flow in my 33 and its laggy as due to the larger internals. Yes it handles 18psi, yes it makes around 250kw with supporting mods, but you need to drive the car like a 2 stroke motorbike keeping in powerband.

no hi-flow i've ever heard about is on full boost anywhere near 3000 - 3500, I know mine certainly isnt. So yeah, not interested in hi-flows.

[abcent]

HKS 2510?

might look into that suggestion. would that be similar size to the standard t28 stock turbo?

[paulr33]

if you want to make around 190 then theres no reason to change to a hiflow or aftermarket unit

[abcent]

yeah i know, just gonna give him some options. His stock turbo is fairly had it, so the the difference in cost between recoing his an an after market set up will make him get it reco'd.

anyone put a 34-t turbo on a 33?

[dezz]

should just pick up a second hand 33 turbo...$3-$400 bucks, and it will make 175-190rwkw all day long, and be on boost pretty early.....

[paulr33]

oh his stocker died? yeah just get a 2nd hand one

the difference in an r34 turbo is about 10 killowats

so not really worth chasing, rare-er so it will cost more to buy usually

[abcent]

it still works fine, but oil seals are stuffed we think

[Kinks]

I've heard stock R33 turbos are good for about 170rwkw. Any more and you sacrifice longevity at a rapid rate.

A high flow will always be a compromise for more power by losing bottom end response. You're modifying an existing design. You will get the best of both worlds by going for a new turbo - turbine technology is continuously evolving.

I have a friend with a GT-RS turbo and loving it.. he wanted good midrange and response for track work so it's not laggy.. didn't care about outright power. Turns out he's making 270rwkw anyway hahahaha.

[dezz]

people like paul, and justin have been running 12psi for quite a long time in paul's case, and still making 190-200rwkw on the stocker...

[Munna1]

195rwkw on 11psi with the stock turbo a gcg highflow is still very responsive and good for 265rwkw with supporting mods. The read this in HPI there project car a while ago was a R34 GTT and this is what they had to say about the gcg turbo vs the stocker.

stock - boost starts to build at 1000rpm and full boost by 2800rpm

highflow - boost starts to build at 1000rpm full boost by 3200rpm

My r33 (has the steel not nylon compressor wheel)

boost starts at 1000rpm full boost at 3000rpm

cheers

[Sydneykid]

I have a hi-flow in my 33 and its laggy as due to the larger internals. Yes it handles 18psi, yes it makes around 250kw with supporting mods, but you need to drive the car like a 2 stroke motorbike keeping in powerband.

no hi-flow i've ever heard about is on full boost anywhere near 3000 - 3500, I know mine certainly isnt. So yeah, not interested in hi-flows.

What sorta high flow is it? How well is the boost build mapping area tuned?

My GCG Ball Bearing high flow made 1 bar at 2,750 rpm in 4th gear

It has more power EVERYWHERE than standard, that's from idle to redline.

Choose the right high flow and then (more importantly) properly tune the whole RPM band. Not just the rpm around where it make max power.

cheers

Edited July 31, 2006 by Sydneykid

[DVS-31T]

i find my gcg hi flow to be a little bit more laggy not much though but makes good numbers 240rwkw at 16 psi also depends what engine management your runnin