Blow through setup. Obviously I need some help.

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Apr 15, 2017 | 04:16 PM

Bignbadbelair

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Blow through setup. Obviously I need some help.

Hey guys over winter I built a stock 5.3 put a on3 034;9;'ancd 76mm turbo on it and a msd 6014 box on it. The best time I have got was a 12.99 and was running out of fuel. So I got a 45lbs fuel pump my regulator is aremotive boost referenced fuel regulator. i have tryed tr-6 ngk along with Br7ef plugs. I also have a 850 double pumper I modified by the hangar 18 instructions. I now am running 86 jets in front and 98 in the rear. My boost gauge sees 8lbs boost. The autometer wideband reads idling 10.5-11 and whenever I do my burnout at the track gen for some reason it seems to be having a problem getting stuck at 14.6. Now at home and doing launches on the road and what not the wideband seems to work great. I gotta call autometer and see why it seems to do that. Also my timing right now he base timing I have set at 28degrees across the board (after 1200rpm and then my mapsensor pulls timing out as boost comes in. So with everything I mentioned where would you guys start trying to figure out? Today I did a run and checked plug reading it looked lean. I have the primary's 2 jet sizes bigger and did another run the car slowed down. Tomorrow I'll pull a plug and look at the reading .

Apr 15, 2017 | 08:28 PM

Hank Peabody

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From: Abilene TX

Sounds all jacked up! It should be easy to fix though at least. Is it gasoline or e85? If gasoline those jets seem huge! I have a 750HP on a 454 bbc with two s300s running 7psi boost and my jets are 75/88 with no PV in back.

For your idle being so rich you probably need quite a bit bigger IABs.

What fuel pump is it exactly? 45lbs or 45gallons? 45 lbs per hour wouldn't feed a stock Civic!

It sounds like your floats might be set too low. Do you have jet extensions in the back?

Apr 15, 2017 | 08:35 PM

baronsmith98

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From: Brunswick, GA

Have you considered sending the carb to CSU? I know they are pricey but everyone raves about how well they work

Apr 15, 2017 | 10:55 PM

Bignbadbelair

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I was recently thinking about sending my carb to csu. As for the fuel pump it's 255lph and 45psi max. Also I am running vp110 fuel. Also taking a plug reading it still has a very light tan color to the plugs.

Apr 15, 2017 | 11:39 PM

GotBoostRacing

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From: Portland

You cannot go wrong by sending your stuff to Kevin at CSU. One and done with his builds, and they are usually spot on when you get them back.

Apr 16, 2017 | 06:11 AM

forcd ind

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From: woodbine, md

Is the reg. designed to handle that much pressure, then reduce it to like 7 lbs? Some FI regs don't work well with carbs.
You prob don't need 110 in the car at 8 lbs., but 100 prob wouldn't be to far off, unless your planning more boost.
I have had Kevin (CSU) do several carbs, always spot on-does your carb have rem. air bleeds? Some of those wide bands wont read correct if to rich,
can give false readings.
You prob need to drop the hi speed A/B's down to .022-.023 to richen the top end, reduce the jet sizes, and a boost ref PV to ensure its open.