Maximum Boost On -9s With Standard Headgasket And Studs.

[SiR_RB]

My mate had -9's stock 34 GTR bottom end, cams, head studs and made 360ish kw at 26psi if I recall

Do head studs and keep boosting till there's nothing left

Don't think you will go over 26psi with such small rear housings

[No Crust Racing]

I've seen another 2 that were reported as making 370s one on 98 and the other on e85

Given what was said about the position on the comp map etc, I can't imagine it would make more than 350 or so, but then again you made that on -7s... Tuner did say his dyno tends to read a bit lower than the other locals.

My mate had -9's stock 34 GTR bottom end, cams, head studs and made 360ish kw at 26psi if I recall

Do head studs and keep boosting till there's nothing left

Don't think you will go over 26psi with such small rear housings

Cams help top end a fair bit.

Seems head studs are a wise investment though. Saves replacing the whole gasket which is a flamin mongrel of a job in a CA, so would be heaps worse in a 26.

[r32-25t]

As I said they were "reported" as making that, I never saw any hard evidence though

[No Crust Racing]

If you made 348 on -7s, is it not reasonable to think -9's could make 10-30 or so kw more?

Genuine question, not baiting etc.

I realise different dynos, different days etc.

[r32-25t]

10-20 Maybe, it's something I'd like to try cause I still want more then I have and there is no way these have anymore to give

[No Crust Racing]

What manifolds and exhaust have you got? Do you know what your cam gear settings ended up at? What Ecu? When's full boost?

[r32-25t]

Stock manifolds, exhaust is Midori dumps then 2x3in into 3.5in the rest of the way, can't remember where the cam gears are set, haltech plug in and full boost is before 4000rpm

[No Crust Racing]

Similar to me then. N1 manifolds, HPI 3" dumps into 3.5" front pipe and 3.5" the rest of the way. Same ECU. Full boost seemed laggier to me though. I will do some proper plotting to confirm though.

Yes I realise -9s are bigger/laigger and also that larger ports in the N1s will not assist response.

Edited June 9, 2016 by ActionDan

[Hadouken]

The car isn't going to feel much more raw with a extra 20kw.

Even if the tuners dyno reads higher, your car feels slow to you and quite frankly shouldn't.

Do you have video of going wot?

[No Crust Racing]

The extra power is just a nicety and something to keep me happy. The pods is the same, make it noiser and more dramatic/fun to drive. Same as removing the mid muffler, more noise, more fun.

I can get a video when it dries out enough for me to get it out of the shed and drive it.

How power feels from one person to the next is relative, 330rwkw in a 1500+kg car isn't that much. Some of the "drama" is also lost purely because the 34 hooks up so well. I could put cheese cutter tyres on it and do mad skids everywhere and it would be more exciting to drive lol

Edited June 9, 2016 by ActionDan

[GTofuS-T]

Definitely relative...I can have fun driving my mum's Getz...

[Piggaz]

Pull the front shaft out then. That will sort it out.

[No Crust Racing]

Haha, I will be for the next tune if I do this.

Even still, I was surprised to find how little, as in almost zero, front drive was being engaged through the hill run. More an indication of how much harder I could have pushed grip wise. It only has ATR Sports on it, but they're 275 so even if they're a cheap tyre, there's plenty of it. Probably on par with a half decent 255 which is all my old one had on it.

[niZmO_Man]

Or your ATTESA isn't working properly

[No Crust Racing]

I did a couple of brisk launches just to test and it seemed fine to me.

[Ambi3nce]

Mine start pushing coolant on 20psi e85 350kw or so.

Just do studs and gasket while engines out save doing it twice like me.

[Dose Pipe Sutututu]

Didn't I say head studs a page ago?

[r32-25t]

Mine start pushing coolant on 20psi e85 350kw or so.

Just do studs and gasket while engines out save doing it twice like me.

why would he be taking the engine out?

Didn't I say head studs a page ago?

we all have

[No Crust Racing]

So what we're saying is I need studs...

[NISR32.5]

I don't think you have pushed the car hard enough yet to enjoy it. I know in my 32 with 265 z221 hankooks its grips like mad through the hills but if you push hard enough it will still step out. That was with 332kw with -5 dinosaurs.

Owned and driven a few fast cars but the GTR keeps me happy. Don't get me wrong evo's are great but it's not the same driving one.