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Fuel Rail... how much PSI?

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Old 07-15-2004, 09:09 AM
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Default Fuel Rail... how much PSI?
up to how much PSI can you pump fuel on the fuel rail on 450cc blue tops DSM
iam pushing them up to 75psi isnt that too much??
with stock ignition it feels like misfiring..
Anyone know what to do?
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Old 07-15-2004, 03:02 PM
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Default Re:Fuel Rail... how much PSI?
Why are you that high with fuel pressure? Need a little more info on the setup and the problem
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Old 07-15-2004, 07:19 PM
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Default Re:Fuel Rail... how much PSI?
the stock psi is more that sufficent, considering that you injectors flow almost double your stock 240ccs.


such a high psi is a bad thing.
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Old 07-16-2004, 04:39 AM
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Default Re:Fuel Rail... how much PSI?
yeah what's going on with this?
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Old 07-16-2004, 08:17 AM
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Default Re:Fuel Rail... how much PSI?
too many people these days are taking advice from their idiotic all motor friends.


all motor people are bad, they are the devil dont listen to them.
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Old 07-16-2004, 10:43 AM
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Default Re:Fuel Rail... how much PSI?
Originally Posted by Paperchaser013
all motor people are bad, they are the devil dont listen to them.
lol, im gonna put that in my sig
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Old 07-19-2004, 04:56 AM
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Default Re:Fuel Rail... how much PSI?
yeah but iam boosting 18-20PSI
on stock pressure i run lean :P
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Old 07-19-2004, 09:31 PM
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Default Re:Fuel Rail... how much PSI?
to answer your question the honda fuel rail is sufficient and test up to 450whp with no problems,unless your making that much power i would leave it alone,unless your into looks.
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Old 07-19-2004, 09:57 PM
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Default Re:Fuel Rail... how much PSI?
can 450s suply enough fuel for that kind of boost? on a b16 i think they are maxed out at like 15. not 100% shure tho
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Old 07-21-2004, 08:39 AM
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Default Re:Fuel Rail... how much PSI?
Originally Posted by Bobohc3d
yeah but iam boosting 18-20PSI
on stock pressure i run lean :P
i thought that a stock honda FPR had a 1:1 ratio, so if manifold pressure rises fuel pressure will go up with it. ie, stock pressure is 36psi, add 10 psi of boost, and now your fuel pressure is 46 psi.
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