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Definitive Guide To Building 300-330awkw Gt-r

No Crust Racing

By No Crust Racing,
in Engines & Forced Induction

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usmair Mentor

usmair

Posted
Posted

What area are you in? Its at a few places now, so if the skyline isn't your daily driver you'll be fine.

You're talking a 2.6L right? Mine maxed 1000's at 403rwkw but its an rb30 - capacity makes a difference.

I'm near blacktown... as far as I know the closest one is at richmond

and I dont have a 2nd car so the skyline is the daily... even though it doesnt get driven everyday

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sneakey pete
sneakey pete

I would presume the result of this thread was: Headstuds, -9's, cam gears, injectors, fuel system, E85 ecu and a tune?

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Rolls Grand Master

Rolls

Posted
Posted (edited)

I see that stated a lot but can't understand why! Can you explain why would engine capacity makes a difference?

Because bigger capacity motors make more torque and hence don't usually rev as much to make the same power.

Edited by Rolls
MrStabby Grand Master

MrStabby

Posted
Posted

Because bigger capacity motors make more torque and hence don't usually rev as much to make the same power.

Oh of course - we really should be talking about what torque the injectors max out at since that will be related to airflow - not at what power.

Rolls Grand Master

Rolls

Posted
Posted (edited)

Oh of course - we really should be talking about what torque the injectors max out at since that will be related to airflow - not at what power.

Yeah it can be a bit confusing, being as pulse width is static all that changes is duty cycle. So even though at high rpm more fuel is being injected over time, less fuel is being injected per pulse. So if you have fuel pump issues etc you might see it leaning out at high rpm but fine at peak torque, but if the injector is the issue it will lean out at peak torque.

I think I've got that correct, also explains why injectors required to make x rwkw can vary wildly as seen in this thread.

Just out of curiosity do people ever play with the pulse width to try and get more out of injectors, or will that cause a drop in pressure? Or are injectors designed to operate at a specific pulse with, assuming I haven't got this all ass about?

Edited by Rolls
J'z-R33 Grand Master

J'z-R33

Posted
Posted

I'm near blacktown... as far as I know the closest one is at richmond

and I dont have a 2nd car so the skyline is the daily... even though it doesnt get driven everyday

Ermington might be a little closer? its 10-15 from my place (Parra/westmead)

http://www.ethanolanswers.com.au/ethanol/locator

usmair Mentor

usmair

Posted
Posted

so talked to a reputatble tuner (in sydney) tonight

he's going to be tuning my car going forward

i've decided to go with a Haltech for dual maps

BP98 shoud get be 320-330 all day everyday

and with e85 he said I'll be able to run 27psi and the motor should be fine (he said he's done a fair few unopened RBs with this much boost and its all fine)

and he also said it should crack 380-400kw with e85 :banana:

also asked him about cams and cam gears

with -9s he said there is no need for cams (which seems to be the consensus on here as well)... nor cam gears (which I thought was a little weird)

but I'm gonna go with what he says and see what happens

car should be going in about 5-6 weeks so will keep you all updated

P.S dont start bashing the tuner or me... positive comments only please :thumbsup:

Don Dada Mentor

Don Dada

Posted
Posted (edited)

Do eeeeet!!!

Graphs of two pls....with RPM

Thank you

Pls come again

edit...

An update this guys thread while youre at it

http://www.skylinesaustralia.com/forums/topic/322850-garrett-gt2860-9s/

Edited by Don Dada
piranha Enthusiast

piranha

Posted
Posted

Hey guys quick question.

Is there any real need for a hard pipe kit at around 300kw.

Couldn't hurt could it?

Just gathering bits up for turbo upgrade and wondering if its a good idea.

Cheers

Luke

N1GTR Grand Master

N1GTR

Posted
Posted

I think you'll find Rolls is just messing around, or forgetting this isn't an RB20/25 thread :)

Hard pipes are not required for 300rwkw. Spend the money on improving a different area.

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