Definitive Guide To Building 300-330awkw Gt-r

[rev210]

You have some areas yet to cover like suspension/brakes/tyres etc to make full use of the power too.

Edited September 17, 2008 by rev210

[No Crust Racing]

This is all good news guys, I'm happy to hear that I at least have my head around the requirements.

Yes I know I'll need a clutch, and shocks and likely brakes as well, nothing my R33 GT-R didn't have so I'm confident in those areas I just wanted feedback on the engine side of things as mine was only a mild tune 250awkw's.

I've read of people having N1 cores put inside of there R34 GT-R turbo's and having the housing machined. Is this worth the hassle for the cost savings?

[R31Nismoid]

^^ no, not when -7's from Garrett are $1200-$1300ea these days.

By the time you sell the R34 stockers, works out to around what, $1000ea which is cheaper, faster and easier.

Turbos off, turbos on...

Rather than turbos off... turbo shop takes "X" time ... turbos on.

[No Crust Racing]

Ahh right-o

I've heard some good and bad things about PFC's, what other real alternatives are there? Is Ben at Race Pace just a master who can tune a graphics calculator or does he recommend something?

[R31Nismoid]

PFC on just about every car he tunes so ye... Nothing bad about em if you know what your doing.

You'll also need Nismo AFM's (cant remember if i posted about that)

[No Crust Racing]

Ahh didn't realise AFM was required.

Where's SydneyKid lurking, thought he would've chimed in by now...

[R32 Driver]

you can always get the d-jetro version and run without afm?

[Travis Trayhern]

with the d-jetro i hurd you lose abit of street drivability? is this true? and more suited for the track

[Travis Trayhern]

Ahh didn't realise AFM was required.

Where's SydneyKid lurking, thought he would've chimed in by now...

what pwr do the std AFM and Injectors max out?

[Beer Baron]

both the injectors and the afms reach their 'safe' limit at about 270-280rwkw. you can push more if you want but it's not advisable. considering to get past 270rwkw anyway you will be spending up on turbos etc you really should spend the money to get the fuel system to match and the AFMs to allow you to tune it properly.

[No Crust Racing]

I think I remember seeing that some people had used two RB25 AFM's, yes no?

If Nismo items are the way to go what's the going rate on a set of those babies?

[paulR32gtr]

I am running standard AFM's and injectors so you can get away with it. If you have the cash for Nismo AFMs then they are a good idea, especially if your stockies are getting old. I did put a nismo fuel pump in however which is also for a bit of security.

Just make sure you got a spare $16 odd grand firstly to buy all the bits, and then get Racepace to put it all on and tune it - or if your going to do it yourself you might save around $3k.

I just drove it out loaded up with goodies the day I left for targa tas and said "fix it" - knew there was no way I could come back to a slow stocky GTR after fanging one around tassie for a week - and there was no way I was going to put myself through changing the turbos on another rb26 for at least a year.

[paulR32gtr]

You can also use 300zx Z32 afm's - but I can't see the point - go brand new with the Nismos - they slot straight in place of your stockies - just read further.

I do think the Z32's are larger diameter so only useful for much higher power levels.

Edit: you also need to change plugs on your wiring loom (=yuk), and not sure if they will fit with your stock piping - looses the beauty of having a car for which there are so many true bolt on upgrades.

Edited September 18, 2008 by paulR32gtr

[R31Nismoid]

I think I remember seeing that some people had used two RB25 AFM's, yes no?

If Nismo items are the way to go what's the going rate on a set of those babies?

$350ea from perfect run.

Z32's aren't bolt in, Nismos are a Z32 sensor in a stock AFM casing

Same deal wirth RB25 ones, dont 'bolt in'.

Nismo is the easiest soloution, not the cheapest however... but id rather buy new AFM's than use unknown others as AFM problems are painful (had some myself recently)

[No Crust Racing]

Yeah I've been there with the 33, ending up being the infamous dry solder joints that got me.

[Brockas]

with the d-jetro i hurd you lose abit of street drivability? is this true? and more suited for the track

No.

It's all in the tune.

[R31Nismoid]

^^ that with the d-jetro is going to cost a lot more + the units extra cost itself.

So its pretty much even steven, one is not neccesarily better than the other.

Both can achieve the same end result, for the same cost.

Which is faster? The AFM path

[No Crust Racing]

nsta: How long have you had your stock bottom end at that power? Tell me a bit more about your car/driving habits etc

Everyone: What boost will GT-SS's need for the power in mind. Could the same power be achieved at lower boost on different turbos? Less boost means less heat and stress on the bottom end.

[Swiper the Fox]

Ahh right-o

I've heard some good and bad things about PFC's, what other real alternatives are there? Is Ben at Race Pace just a master who can tune a graphics calculator or does he recommend something?

Ben could tune a medieval harp if it needed it!

[R31Nismoid]

nsta: How long have you had your stock bottom end at that power? Tell me a bit more about your car/driving habits etc

Everyone: What boost will GT-SS's need for the power in mind. Could the same power be achieved at lower boost on different turbos? Less boost means less heat and stress on the bottom end.

Yeah you could do it with bigger turbos, but then you'd have a less responsive car for the power.

Its a balance