300 BHP - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

lewisj · 26th July 2005, 11:37 PM

Hi I just recently brought a R33 gtst for drifting and I want to bump it up from 250bhp to 300bhp it already has a nismo cat back exhaust HKS induction and thats pretty much that I had it dyno'd and it was kickin 262bhp
they said it was miss fireing so Ive brought some HKS iridium plugs they said with them they could turn up the boost and get about 280 but I want 300 so how would I do it. I have a blitz intercooler and a HKS blowoff.
Would down pipes help do it I want to keep it as chep as possible but also I need to keep the cat due to competition rules are ready for a change.
So if any one can help it will be appericiated.
Lewis

paul creed · 26th July 2005, 11:59 PM

Lewis,
As i've just answered one of your other posts, i might aswell answer this one aswell. If your local garage is telling you that you can crank up the boost now you have better spark plugs, then be prepared for a few bills.
If you only have a stock turbo, then anything above .8 bar for anything more than a few seconds, will surely be the demise of your turbo.
Downpipes will help flow, but fuelling has got to be a key figure in getting higher performance figures. Assuming that your car is fitted with a boost controller, then you can crank it up a tad, as generally GTST's run at about .7 bar boost.
You can get performance cats now if you need to comply with any regs, not that i was aware of any new regs.

skylineman · 27th July 2005, 03:43 PM

mine is running 310bhp atw and 287lbs, ive had a Greddy front mount intercooler, Custom one piece 3"zorst, Induction kit, boost contoller and was running at 1bar, but as paul said expect big bills, after a month my turbo blew so then a rebuild was done. All in all to 310bhp ive spent nearly 3grand and now spent another £2500 to get it to 400bhp, itll cost you, and make sure u get the turbo rebuilt and ecu.

niteryder · 28th July 2005, 12:13 AM

what adjustments to timing have you made?

I have an rb25det in my 200sx. Its got full exhaust, filter, FMIC fuel pump and boost @ 0.8bar, should I change my timing?

What turbo you using to get 310atw? I would like to aim for around that figure.

Thanks
Tom

skylineman · 28th July 2005, 03:57 AM

timing was advanced slightly, the turbo is a rebuilt with steal internals and 360 bearings, im running at 1bar. I would only alter the timing as part of a tune up on a rolling road, u could do it your self but ud have to keep testing it listening for det then altering it again. I would also suggest putting a big cooler on, this alone gave me 20bhp.
hope this helps
Jad

niteryder · 28th July 2005, 12:57 PM

Got a big front mount

Are you still using thew stock plenum? My biggest problem with it was that my IC pipe run has to be really long due to no space in the engine bay to go back over the engine.

I was told by someone to set timing to 10 ot 11 deg btdc, but I would like more than ione persons advice....

I was looking at using a GT3071R, emanage and some 720's. Have many people in the UK pushed the stock engine to see what power/revs it can take?

SimonM · 28th July 2005, 02:39 PM

Quote:

Originally Posted by niteryder

I was told by someone to set timing to 10 ot 11 deg btdc, but I would like more than ione persons advice....

Factory static ignition timing is 15deg +/- 2deg at 650rpm. So at 10deg you would be down on power, not sure why anyone would recommend that. With an fmic you should be safe to advance the ignition timing a bit, as long as your not running much higher than stock boost. Although it would still be best to get it done on a dyno so you can keep an eye on afr's and listen for detonation.

BIGALR33 · 28th July 2005, 04:29 PM

Quote:

Originally Posted by lewisj

Hi I just recently brought a R33 gtst for drifting and I want to bump it up from 250bhp to 300bhp it already has a nismo cat back exhaust HKS induction and thats pretty much that I had it dyno'd and it was kickin 262bhp
they said it was miss fireing so Ive brought some HKS iridium plugs they said with them they could turn up the boost and get about 280 but I want 300 so how would I do it. I have a blitz intercooler and a HKS blowoff.
Would down pipes help do it I want to keep it as chep as possible but also I need to keep the cat due to competition rules are ready for a change.
So if any one can help it will be appericiated.
Lewis

Had mine dynoed at new too and it was same spec, but with standard airbox and performance element. This too was 262bhp.. Makes me wonder what sort of power the standard air box is good for..

skylineman · 28th July 2005, 11:29 PM

standard air boxs i think are better anyway, cause u dont get heat soak, i just like the induction noise!!

Ajax · 29th July 2005, 07:51 PM

Well my mates GTST 'used to' make 320 lbft but check out this thread below
http://www.skylineowners.com/forum/s...ad.php?t=28133

Thats what happens when you "turn up the boost"

The exhaust wheels totaly dissintigrate!
Your cheapest route is to get your turbo rebuilt with steel internals for around 650 quid, you would then beable to run a bar of boost but you then start to max out the injectors and air flow meter if you go much further than that, if it starts to run lean=BANG!

26th July 2005, 11:37 PM	#1 (permalink)
lewisj GTR Register Member Join Date: Jul 2005 Posts: 143	300 BHP Hi I just recently brought a R33 gtst for drifting and I want to bump it up from 250bhp to 300bhp it already has a nismo cat back exhaust HKS induction and thats pretty much that I had it dyno'd and it was kickin 262bhp they said it was miss fireing so Ive brought some HKS iridium plugs they said with them they could turn up the boost and get about 280 but I want 300 so how would I do it. I have a blitz intercooler and a HKS blowoff. Would down pipes help do it I want to keep it as chep as possible but also I need to keep the cat due to competition rules are ready for a change. So if any one can help it will be appericiated. Lewis

26th July 2005, 11:59 PM	#2 (permalink)
paul creed Gone Join Date: Feb 2003 Location: In hell Posts: 4,693	Lewis, As i've just answered one of your other posts, i might aswell answer this one aswell. If your local garage is telling you that you can crank up the boost now you have better spark plugs, then be prepared for a few bills. If you only have a stock turbo, then anything above .8 bar for anything more than a few seconds, will surely be the demise of your turbo. Downpipes will help flow, but fuelling has got to be a key figure in getting higher performance figures. Assuming that your car is fitted with a boost controller, then you can crank it up a tad, as generally GTST's run at about .7 bar boost. You can get performance cats now if you need to comply with any regs, not that i was aware of any new regs. __________________ ( OO\ SKYLINE /OO) GTROC Artwork/Calendar Designer 2002-2008 Get your 2009 Calendar here ---> http://www.gtr.co.uk/products-86.html CAPTAIN BLACK - LIFETIME MEMBER #070 The New Book is out :) http://www.gtr.co.uk/products-64-toV...g_marvel_.html

29th July 2005, 07:51 PM	#10 (permalink)
Ajax GTR Register Member Join Date: Jun 2005 Location: Plymouth Posts: 420	Well my mates GTST 'used to' make 320 lbft but check out this thread below http://www.skylineowners.com/forum/s...ad.php?t=28133 Thats what happens when you "turn up the boost" The exhaust wheels totaly dissintigrate! Your cheapest route is to get your turbo rebuilt with steel internals for around 650 quid, you would then beable to run a bar of boost but you then start to max out the injectors and air flow meter if you go much further than that, if it starts to run lean=BANG! Last edited by Ajax; 29th July 2005 at 07:56 PM.

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27th July 2005, 03:43 PM	#3 (permalink)
skylineman GTR Register Member Join Date: May 2005 Location: northampton Posts: 174	mine is running 310bhp atw and 287lbs, ive had a Greddy front mount intercooler, Custom one piece 3"zorst, Induction kit, boost contoller and was running at 1bar, but as paul said expect big bills, after a month my turbo blew so then a rebuild was done. All in all to 310bhp ive spent nearly 3grand and now spent another £2500 to get it to 400bhp, itll cost you, and make sure u get the turbo rebuilt and ecu.

28th July 2005, 12:13 AM	#4 (permalink)
niteryder GTR Register Member Join Date: Sep 2004 Location: cambridgeshire Posts: 59	what adjustments to timing have you made? I have an rb25det in my 200sx. Its got full exhaust, filter, FMIC fuel pump and boost @ 0.8bar, should I change my timing? What turbo you using to get 310atw? I would like to aim for around that figure. Thanks Tom

28th July 2005, 03:57 AM	#5 (permalink)
skylineman GTR Register Member Join Date: May 2005 Location: northampton Posts: 174	timing was advanced slightly, the turbo is a rebuilt with steal internals and 360 bearings, im running at 1bar. I would only alter the timing as part of a tune up on a rolling road, u could do it your self but ud have to keep testing it listening for det then altering it again. I would also suggest putting a big cooler on, this alone gave me 20bhp. hope this helps Jad

28th July 2005, 12:57 PM	#6 (permalink)
niteryder GTR Register Member Join Date: Sep 2004 Location: cambridgeshire Posts: 59	Got a big front mount Are you still using thew stock plenum? My biggest problem with it was that my IC pipe run has to be really long due to no space in the engine bay to go back over the engine. I was told by someone to set timing to 10 ot 11 deg btdc, but I would like more than ione persons advice.... I was looking at using a GT3071R, emanage and some 720's. Have many people in the UK pushed the stock engine to see what power/revs it can take?

28th July 2005, 11:29 PM	#9 (permalink)
skylineman GTR Register Member Join Date: May 2005 Location: northampton Posts: 174	standard air boxs i think are better anyway, cause u dont get heat soak, i just like the induction noise!!