Fuel Deliver Problem??? Please help

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Fuel Deliver Problem??? Please help

Postby KBSmotorsports » Mon Jun 18, 2012 7:08 pm

Ok first im gonna start off with my set up from last year that worked great then give you my set up for this season and i hope somebody can help!

Ok last season i had a 498c.i BBC with dual 4 780cfm carbs on alcohol
Enderle Fuel pump. I have size 10 line from my fuel cell to my pump then size 8
from my pump to my regulator which the regulator is opened all the way just used to split the fuel lines to the carbs
then i have size 6 line from my regulator to my carbs. this set up worked great last season dragster ran great.
well this year we decided to go to a 582c.i bbc built by nye's performance 14:5:1 compression motor. well i ran
my 780's on it for one weekend and it just wasn't enough fuel for the 582 so i had 2 1050 dominators built for my set up
from pro systems and its been popping and fluttering all the way down the track i went from the 182 jet's that he put in
the carbs for my set up all the way down to 144's it seemed to get better still has some popping and fluttering but now my
plugs are detinating and i know its super lean and at this point im not even running the car till i figure something out, I dont
wanna burn down a new motor, its not worth it
well having the same fuel pump and line set up and everything from last years set up going to the new dominators
to me it almost seems like its not getting enough fuel to the carbs the keep the bowls full down track or something
I'm thinking about getting a fuel log and getting rid of the regulator that i just use for splitting my fuel lines to the carbs and trying
that to see if it would help with getting enough fuel to the carbs. if you think its something else or any suggestions i would much appreciate
it, at first i thought it was in timing somewhere ive had it from 108 to 110 to 112 to 114 and its the same everywhere same with the distributor
ive had it from 32 to 34 to 36 to 38 right now i have it on 36 seemed to run the best there. If anybody has any suggestions please help me out as
much as yu can. It's turning into a major headach to get this thing to run smooth
Please and Thank you,
Kyle Smith
KBSmotorsports Custom Body & Paint
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Re: Fuel Deliver Problem??? Please help

Postby af2 » Mon Jun 18, 2012 7:19 pm

Pressure???
GURU is only a name.
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Re: Fuel Deliver Problem??? Please help

Postby KBSmotorsports » Tue Jun 19, 2012 8:28 am

Anywhere from 3.5 to 7 at an idle, weve tried it everywhere. Ive went from a 130 size pill in the bypass on the fuel pump down to a 95 pill to raise pressure still wasnt helping
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Re: Fuel Deliver Problem??? Please help

Postby avengerengines » Tue Jun 19, 2012 8:42 am

I'd get rid of the regulator. Fuel log with a bypass is all you need. Do you have a front mounted cell?
Bob
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Re: Fuel Deliver Problem??? Please help

Postby KBSmotorsports » Tue Jun 19, 2012 8:47 am

Thats what im thinking and yeah behind my seat
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Re: Fuel Deliver Problem??? Please help

Postby avengerengines » Tue Jun 19, 2012 9:08 am

KBSmotorsports wrote:Thats what im thinking and yeah behind my seat


Is it in a dragster? I ran 2 Rupert 750 alcohol carbs with the same set up on a 565 and it ran great. Camaro, 8.0s at 173 mph.
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