hot off the dyno..

[tsoob]

255kw At the wheels tonight, with a stinkload more drivability, ready for taupo this weekend.

[method]

Looks nice!

Can we have a rundown on specs? Love that shape/colour bmw.. even if they are common with a nice set of wheels i think they have class.

[stalker]

wicked!! nice figures!
Whats in it???

[AE86less]

RB30 I think. It's soo sick

[bluemaumau]

shouldnt rb30s be pushing past 300?

[postfach]

I see you found a home for the fully machined .coms, looks hot on that, are those 9s?? Why do they fit so well??!

[escortman]

shouldnt rb30s be pushing past 300?

yeh most of the 30s on about 10-12 psi seem to hit the 300 mark

maybe its a 25 or even a ..... 20

[postfach]

Definitely not a 20. Maybe it only has a small turbo? Still gonna do mean skids, those chassis are pretty light IIRC.

[tsoob]

its a na25 head and 30 block, it has a garett t3/t4, shit wastegate, bov 750cc inj 2x bosch pumps, haltech ecu, after a few hours on the dyno we came to the conclusion that the stainless manifold cant flow enough and the w/g setup is not really ideal,



however 255kw wheels in a bmw is pretty loose.

They are 9's on the rear alex, it has had the full stainless pipe treatment on the guards, remember that the offset on these wheels is +15 so they fit pretty much anything, ill try and get them on my rolla for some fun later.

[Lith]

Nice that should be a scary ride I can't see how a stainless manifold should restrict it to 300rwkw, considering you can make more than that on the stock cast manifold without too much problem. What type of T3/T4 is it (trim etc)? And how much boost are you running?

10-12psi is still low for 300kw from an RB30 unless its running big cams or if its on a very very happy dyno.

[samlloyd]

Ive got the same setup tsoob, but my little shitty t3/t4 limits it to around 230.

[cat007]

How little is little?

[postfach]

I saw this car in the flesh today, damn, its hot. The stretch on the rears is something to behold.

[samlloyd]

.63 exhaust housing, .50 compressor i think.

I dont really know much about turbos, just trying to learn a bit these days

[cat007]

its just I have a T3 based turbo and concerned about its flow limit. Hopefully it'll do 400rwhp before pumping hot air.

Do you know what the size of the compressor wheel is?

[escortman]

i assume u guys mean t04es? t3/4 are the flanges but yeh thats will be the limiting factor, dude at work has same engien etc with link and a master power t70 i think just over 300kw atw on 11psi

[cat007]

well t3/t4 are very different as far as flanges go. I have a T3 hot side and T4 cold side

[samlloyd]

Ill get the car back soon, ill let you know what the drivability is like. Wouldnt mind a t70 on it

[Lith]

i assume u guys mean t04es? t3/4 are the flanges but yeh thats will be the limiting factor, dude at work has same engien etc with link and a master power t70 i think just over 300kw atw on 11psi

T3/T4 actually refers to the fact its a hybrid of wheels - not flanges. Most Garrett naming bases on which turbine wheel then compressor wheel family is being used, so with a T3/T4 (which is overly vague) you have a T3 turbine wheel of some sort and a T4 compressor wheel of some sort whacked together in some set of housings. Could be a 50a/r compressor cover and .63a/r turbine housing, could be anything which can be made to fit.

Maxing out below 260rwkw must be a pretty small T3/T4, though one of my mates had a Steve Murch built T3/T4 (not a random nasty) max out by 250rwkw at 18psi on his RB30. Pulled that off and put on a GT3582R and with a bit of tune fiddling it put out over 300kw on the same boost, albeit a little more lag.

[strx7]

depends on the exact spec a T3/T4 could max out anywhere between 200HP and 450+hp (at the engine) all depends on housing A/R, wheel trims etc etc etc