HP from fuel pump change..
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
HP from fuel pump change..
How many HP can I expect to gain by changing from mech. to electrical fuel pump?? I have read that it could be as much as 10 HP... However - I would like to see actual dyno results...
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Re: HP from fuel pump change.. (GrandSportC3)
Only way you would see any gain IMHO is by cooler fuel/more fuel and if your PSI is to low for you application.
I installed a NASCAR type heat spacer system on my MECH FP along with 1/2 " SS fuel line from tank to pump. Percolation disappered and I gained a max of 1/10 in the 1/4 on my SB 331 cid. It sure idled and ran better though w/o installing an electric. Of course I dont have 400 cid or more either :eek:
I installed a NASCAR type heat spacer system on my MECH FP along with 1/2 " SS fuel line from tank to pump. Percolation disappered and I gained a max of 1/10 in the 1/4 on my SB 331 cid. It sure idled and ran better though w/o installing an electric. Of course I dont have 400 cid or more either :eek:
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From: The Top of Utah
Re: HP from fuel pump change.. (GrandSportC3)
I have no idea what you are running, but in general, if the mechanical pump is supplying the need, an electric pump will give you nothing. A fuel pump isn't a horsepower "maker" like a cam or heads. It is an "enabler". In other words, a change to the fuel system, including a pump, doesn't make power, it allows the power the combination has, to be made. The answer lies in whether the present pump is "up to the task" or not. Good luck, and...
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RACE ON!!!
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Re: HP from fuel pump change.. (Taijutsu)
Sure can,
http://www.sealsit.com/fuel.asp
I saw it in one of my Eng books back in early 98'.
Under $40 and drops fuel temp in that area 10-15 degrees
Called the maker and grilled them good.......all the right answers.
The original application was for Robert Yates Belt Drive to keep hot oil from entering the the fuel pump cavity. Makes sense to me & it works!
I bought mine from CV products
http://66.155.51.113/default.aspx
:cheers:
http://www.sealsit.com/fuel.asp
I saw it in one of my Eng books back in early 98'.
Under $40 and drops fuel temp in that area 10-15 degrees
Called the maker and grilled them good.......all the right answers.
The original application was for Robert Yates Belt Drive to keep hot oil from entering the the fuel pump cavity. Makes sense to me & it works!
I bought mine from CV products
http://66.155.51.113/default.aspx
:cheers:
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: HP from fuel pump change.. (GrandSportC3)
I thought that there would be at least a 1 - 2 HP gain.. The mech. pump is pushrod operated and therefore takes at least minimal HP to operate.. I could imagine that at higher RPM - it could make at least 2 - 3 HP difference...
My current fuel pump is a 120 GPH Carter fuel pump with 6 PSI fuel pressure.. This might be too little... I noticed that I was running pretty lean at higher rpm's on the dyno... Don't know if it was because of my jetting or because of the fuel pump.. More fuel pressure wouldn't be bad for sure..
My current fuel pump is a 120 GPH Carter fuel pump with 6 PSI fuel pressure.. This might be too little... I noticed that I was running pretty lean at higher rpm's on the dyno... Don't know if it was because of my jetting or because of the fuel pump.. More fuel pressure wouldn't be bad for sure..
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From: The Top of Utah
Re: HP from fuel pump change.. (GrandSportC3)
I thought that there would be at least a 1 - 2 HP gain.. The mech. pump is pushrod operated and therefore takes at least minimal HP to operate
More fuel pressure wouldn't be bad for sure..
I noticed that I was running pretty lean at higher rpm's on the dyno... Don't know if it was because of my jetting or because of the fuel pump.
RACE ON!!!
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: HP from fuel pump change.. (CFI-EFI)
Even if you COULD gain 1, 2, even 3 horsepower, what do you expect to gain from it?
5 HP = .05 better ET.. My best ET so far is 12.068..
.05 better ET would bring me much closer to 11's...
RACE ON!!!
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Thread Starter
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Joined: Jul 2001
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: HP from fuel pump change.. (CFI-EFI)
Frankly, I don't see it. But what the hey! Go for it.
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From: Severna Park Md
Re: HP from fuel pump change.. (GrandSportC3)
What was the weather on race day? Weather can effect ET far more than a tenth. If it was hot and muggy when you went 12.06, go back on a cool dry day and you should do better. it all depends on the jetting also. You see some guys setting up weather stations and making jet changes between every run. Crazy aint it? anyway, if yur runnin a carb pressure is not important as stated above. So long as the supply is there, its all good.
Thread Starter
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Joined: Jul 2001
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: HP from fuel pump change.. (Jvette73)
What was the weather on race day? Weather can effect ET far more than a tenth. If it was hot and muggy when you went 12.06, go back on a cool dry day and you should do better. it all depends on the jetting also. You see some guys setting up weather stations and making jet changes between every run. Crazy aint it? anyway, if yur runnin a carb pressure is not important as stated above. So long as the supply is there, its all good.
