SiR_RB Posted June 9, 2016 Share Posted June 9, 2016 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 Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742956 Share on other sites More sharing options...
No Crust Racing Posted June 9, 2016 Author Share Posted June 9, 2016 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. Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742958 Share on other sites More sharing options...
r32-25t Posted June 9, 2016 Share Posted June 9, 2016 As I said they were "reported" as making that, I never saw any hard evidence though Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742961 Share on other sites More sharing options...
No Crust Racing Posted June 9, 2016 Author Share Posted June 9, 2016 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. Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742965 Share on other sites More sharing options...
r32-25t Posted June 9, 2016 Share Posted June 9, 2016 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 Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742967 Share on other sites More sharing options...
No Crust Racing Posted June 9, 2016 Author Share Posted June 9, 2016 What manifolds and exhaust have you got? Do you know what your cam gear settings ended up at? What Ecu? When's full boost? Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742970 Share on other sites More sharing options...
r32-25t Posted June 9, 2016 Share Posted June 9, 2016 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 Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742976 Share on other sites More sharing options...
No Crust Racing Posted June 9, 2016 Author Share Posted June 9, 2016 (edited) 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 Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742978 Share on other sites More sharing options...
Hadouken Posted June 9, 2016 Share Posted June 9, 2016 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? Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742982 Share on other sites More sharing options...
No Crust Racing Posted June 9, 2016 Author Share Posted June 9, 2016 (edited) 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 Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742983 Share on other sites More sharing options...
GTofuS-T Posted June 9, 2016 Share Posted June 9, 2016 Definitely relative...I can have fun driving my mum's Getz... Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742986 Share on other sites More sharing options...
Piggaz Posted June 9, 2016 Share Posted June 9, 2016 Pull the front shaft out then. That will sort it out. 3 Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742988 Share on other sites More sharing options...
No Crust Racing Posted June 9, 2016 Author Share Posted June 9, 2016 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. Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7742990 Share on other sites More sharing options...
niZmO_Man Posted June 9, 2016 Share Posted June 9, 2016 Or your ATTESA isn't working properly 1 Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7743004 Share on other sites More sharing options...
No Crust Racing Posted June 9, 2016 Author Share Posted June 9, 2016 I did a couple of brisk launches just to test and it seemed fine to me. Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7743006 Share on other sites More sharing options...
Ambi3nce Posted June 9, 2016 Share Posted June 9, 2016 Mine start pushing coolant on 20psi e85 350kw or so. Just do studs and gasket while engines out save doing it twice like me. Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7743023 Share on other sites More sharing options...
Dose Pipe Sutututu Posted June 9, 2016 Share Posted June 9, 2016 Didn't I say head studs a page ago? Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7743024 Share on other sites More sharing options...
r32-25t Posted June 9, 2016 Share Posted June 9, 2016 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 Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7743028 Share on other sites More sharing options...
No Crust Racing Posted June 9, 2016 Author Share Posted June 9, 2016 So what we're saying is I need studs... Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7743031 Share on other sites More sharing options...
NISR32.5 Posted June 9, 2016 Share Posted June 9, 2016 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. Link to comment https://www.sau.com.au/forums/topic/465243-maximum-boost-on-9s-with-standard-headgasket-and-studs/page/2/#findComment-7743045 Share on other sites More sharing options...
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