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Bow
Helpful MS/Extra'er
Posts: 40 Joined: Thu Sep 01, 2005 7:20 am
Location: SE Texas
Post
by Bow » Thu Jul 06, 2006 4:58 am
Does anyone know of any injectors that will drop straight in to the GSX-R Throttle Bodies?
I am looking for something around 350cc and up for use on an NA 2.4L Nissan 4-banger.
I have the 2002 GSX-R 750 Throttle bodies (Keihin).
Bow
ptownsin
MS/Extra Newbie
Posts: 28 Joined: Thu May 05, 2005 4:03 am
Location: Peterborough, UK
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by ptownsin » Thu Jul 06, 2006 5:36 am
Honda S2000 are 390cc I think (from memory) but Blackbird and Hayabusa are slightly bigger than the 750 ones if it's just a bit more poke you need. I got the info from here
http://www.cbr1100xx.org/forums/lofiver ... t5760.html when I was looking at replacements but the 150hp I need is easily supplied by standard injectors as proven on the dyno
Paul.
Bow
Helpful MS/Extra'er
Posts: 40 Joined: Thu Sep 01, 2005 7:20 am
Location: SE Texas
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by Bow » Thu Jul 06, 2006 10:01 am
Thanks Paul.
You think the stock GSX-R 750 injectors will support around 200hp and an engine redline of about 7200 rpm?
The 2002 GSX-R 750 was rated for around 140hp a 12,700 RPM.
Bow
MarkW
Helpful MS/Extra'er
Posts: 93 Joined: Tue Mar 28, 2006 11:31 am
Location: Dorset, UK
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by MarkW » Thu Jul 06, 2006 10:15 am
750 injectors should see 200bhp easily
Don't foget because bikes rev so high theres more fuel flowing, the gsxr 600 that are rated at 30-40cc/min less are good for 180ish
Bow
Helpful MS/Extra'er
Posts: 40 Joined: Thu Sep 01, 2005 7:20 am
Location: SE Texas
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by Bow » Thu Jul 06, 2006 10:18 am
Mark,
That is great news!
I have been beating myself silly looking for injectors and I didn't want to bore out the Throttle Body injector ports if at all possible.
my manifold is slowly coming together, and if the Stock GSX-R 750 injectors will work, I will save a nice chunk of change!
Bow
Bow
Helpful MS/Extra'er
Posts: 40 Joined: Thu Sep 01, 2005 7:20 am
Location: SE Texas
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by Bow » Thu Jul 06, 2006 10:59 am
UPDATE:
I just got off the phone with RC Engineering.
I was told that all of the Suzuki Injectors, from the GSX-R 600 to the Hayabusa, flow about 240cc at 43psi.
He told me I could probably get away with the stock injectors by adding an adjustable regulator to up the pressure.
Bow
MarkW
Helpful MS/Extra'er
Posts: 93 Joined: Tue Mar 28, 2006 11:31 am
Location: Dorset, UK
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by MarkW » Thu Jul 06, 2006 1:01 pm
thats good to know. I seen somewhere the 600's were 240 and the 750's 270 but obviously not the case
Bow
Helpful MS/Extra'er
Posts: 40 Joined: Thu Sep 01, 2005 7:20 am
Location: SE Texas
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by Bow » Thu Jul 06, 2006 6:56 pm
yeah, but what I don't get is that the stock Nissan injectors used on my 2.4l are 270 cc and inject just in front of the valves...
so I have trouble seeing 240cc's working about 6 inches away from the valves, where the ITBs are located...
Know what I mean?
Bow