Fuel Rail... how much PSI?

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Jul 15, 2004 | 09:09 AM

Bobohc3d

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Posts: 444

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?

Jul 15, 2004 | 03:02 PM

Reddy

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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

Jul 15, 2004 | 07:19 PM

Paperchase013

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Joined: Nov 2003

Posts: 908

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.

Jul 16, 2004 | 04:39 AM

quadnie

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Joined: May 2003

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Re:Fuel Rail... how much PSI?

yeah what's going on with this?

Jul 16, 2004 | 08:17 AM

Paperchase013

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Joined: Nov 2003

Posts: 908

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.

Jul 16, 2004 | 10:43 AM

sohcrxsi

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Joined: Dec 2002

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Re:Fuel Rail... how much PSI?

Quote:

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

Jul 19, 2004 | 04:56 AM

Bobohc3d

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Re:Fuel Rail... how much PSI?

yeah but iam boosting 18-20PSI
on stock pressure i run lean :P

Jul 19, 2004 | 09:31 PM

hotintegranights

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Joined: Feb 2004

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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.

Jul 19, 2004 | 09:57 PM

alwaystootall

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Joined: May 2003

Posts: 808

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

Jul 21, 2004 | 08:39 AM

#10

sohcrxsi

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Joined: Dec 2002

Posts: 1,330

Re:Fuel Rail... how much PSI?

Quote:

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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