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Would this be enough fuel??

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Old Jan 30, 2006 | 11:48 AM
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Would this be enough fuel??

well this winter im going with a gt35r, woohoo, from RPM performance from the land down under. I only wanna run 12lb this summer or until i have enough to put some big numbers out on the dyno.. My question is if i have bored out 850 to 1300 from rc enigeering and keep the 550's and have a walbro 255, will that be enough fuel to only run 12 psi. I plan on daily driving her in the summer
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Old Jan 30, 2006 | 01:48 PM
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when i first went single (R-85) i was using 850 and 1300 and was only able to run 14psi so i would say 550 and 1300 at 12 would be a little risky
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Old Jan 30, 2006 | 02:45 PM
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Originally Posted by charlies7
well this winter im going with a gt35r, woohoo, from RPM performance from the land down under. I only wanna run 12lb this summer or until i have enough to put some big numbers out on the dyno.. My question is if i have bored out 850 to 1300 from rc enigeering and keep the 550's and have a walbro 255, will that be enough fuel to only run 12 psi. I plan on daily driving her in the summer
Why are you buying a GT35R from Australia when A-Spec is in Chicago?

I would think a 550/1300 would be more than enough to run a GT35R up to 14-15 psi, depending on how high duty cycles you are willing to run. That being said, if you don't have to worry about emissions, it would probably be better to just go with a 1600s in an aftermarket rail.
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Old Jan 30, 2006 | 02:49 PM
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My fuel setup is close to yours. I run 14 psi and sometimes more, 17psi. I see at most a duty cycle of 89% (which is high and close to the safe limit). I have also bumped up my base fuel pressure though.

I will move to 850's and 1600 when I upgrade again, just to make sure I have way too much fuel. But you should be ok at 12 with that fuel setup. I would pick up an aftermarket FPR and a gauge also.
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Old Jan 30, 2006 | 05:08 PM
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lets just say i got a good deal.



Originally Posted by rynberg
Why are you buying a GT35R from Australia when A-Spec is in Chicago?

I would think a 550/1300 would be more than enough to run a GT35R up to 14-15 psi, depending on how high duty cycles you are willing to run. That being said, if you don't have to worry about emissions, it would probably be better to just go with a 1600s in an aftermarket rail.
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Old Jan 30, 2006 | 05:19 PM
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Originally Posted by rynberg
Why are you buying a GT35R from Australia when A-Spec is in Chicago?
Word!
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Old Jan 30, 2006 | 05:23 PM
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YES i know aspec is a great shop and sean and steve are great guys but i couldnt pass up on the deal on got on the kit...If i had the money for there kit i would have gone to them in a heart beat and only them.

Last edited by charlies7; Jan 30, 2006 at 05:37 PM.
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Old Jan 30, 2006 | 05:29 PM
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Originally Posted by charlies7
well this winter im going with a gt35r, woohoo, from RPM performance from the land down under. I only wanna run 12lb this summer or until i have enough to put some big numbers out on the dyno.. My question is if i have bored out 850 to 1300 from rc enigeering and keep the 550's and have a walbro 255, will that be enough fuel to only run 12 psi. I plan on daily driving her in the summer
you should be good for 390whp.
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Old Jan 30, 2006 | 11:36 PM
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was it cheaper than these http://www.rx7store.net/category_s/131.htm
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Old Jan 31, 2006 | 07:33 AM
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yes
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Old Jan 31, 2006 | 09:14 AM
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Originally Posted by 1wide7
when i first went single (R-85) i was using 850 and 1300 and was only able to run 14psi so i would say 550 and 1300 at 12 would be a little risky

r85 blows a hell of a lot more than a 35r
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Old Jan 31, 2006 | 09:44 AM
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550/1300s should be good for 390-400whp. everything has to be in check though. i have 550/1200s and i ran out of fuel at 13.5 psi and 335whp. i believe i have a fuel pressure problem though and i need my 550s cleaned, they have 80k on them. rewiring the fuel pump seems to help most people. i plan on doing that myself. also chalies7 sent you a pm....
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Old Jan 31, 2006 | 03:27 PM
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