Definitive Guide To Building 300-330awkw Gt-r

[usmair]

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

[Rolls]

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 August 23, 2011 by Rolls

[MrStabby]

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]

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 August 23, 2011 by Rolls

[J'z-R33]

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]

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

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

[N1GTR]

Standard cam gears aswel.....?

Mmm ok, that's a bit different. Still, if it's possible then good on you for trying something newish. Who's tuning it?

[usmair]

Powertune

[usmair]

he also said 1000cc should suffice...

[N1GTR]

Cool, well keep us updated

[Don Dada]

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 August 26, 2011 by Don Dada

[usmair]

haha thats my thread too

[piranha]

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

[Rolls]

Definitely need it. Mine was sucking shut on only 230kw

[usmair]

dont think you need it... mine is making around 300kw at the moment and its fine

[Don Dada]

Definitely need it. Mine was sucking shut on only 230kw

Did it have the wire properly fitted inside?

[N1GTR]

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.

[piranha]

What does everyone use? Any brands better/worse?

[Rolls]

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

lol wups

[Don Dada]

Sounds like Rolls like hard pipes