Carb float setting, Holley six pack

Posted By: Moparnut426

Carb float setting, Holley six pack - 03/12/12 07:43 PM

So I just got done setting the floats on the six pack with a 5-6psi thumper pump on the bench as a "starting" point. Now when I fire this ol girl up, how much should I see the fuel level drop? Currently the fuel is barely dribbling out of the sight hole.

Im just curious is all, as I really hate messing with fuel levels on a running engine. Scares the crap out of me and I hate bubbling paint from the fuel.

Just asking.

Kasey

Posted By: RapidRobert

Re: Carb float setting, Holley six pack - 03/12/12 08:12 PM

The traditional method is to set the fuel level to where when you rock the eng sideways a bit it dribbles out slightly so on the bench w the carb at the same rake as it is when installed you'd want it a bit lower than where it is now if it's dribbling out untouched

Posted By: Moparnut426

Re: Carb float setting, Holley six pack - 03/12/12 08:21 PM

I am hopeing its not gonna take much adjustment. and also that engine running should drop it a touch. Ill find out here in a few days.

Kasey

Posted By: RapidRobert

Re: Carb float setting, Holley six pack - 03/12/12 08:27 PM

not sure if it'll drop or not or if the pump will make up for what the idle circuit uses & as you know the eng uses the least amt of fuel at idle which is why psi is initially checked at idle for a max reading. Just dont want it to get on your paint & ruin it

Posted By: Mr.Yuck

Re: Carb float setting, Holley six pack - 03/12/12 08:54 PM

mine are all set a tad low

Posted By: Moparnut426

Re: Carb float setting, Holley six pack - 03/12/12 09:02 PM

I really should buy the clear sight plugs and get things set, then pull those out and put the brass plugs back inn. The clear plugs are kind of a joke IMHO but a nice tuneing tool.

Kasey

Posted By: RapidRobert

Re: Carb float setting, Holley six pack - 03/12/12 09:07 PM

Quote:

The clear plugs are kind of a joke IMHO but a nice tuneing tool.

I'm seen em but never used em. Do they leak?

Posted By: Moparnut426

Re: Carb float setting, Holley six pack - 03/12/12 09:18 PM

Break off easily, and they fog up.

Posted By: lewtot184

Re: Carb float setting, Holley six pack - 03/12/12 09:45 PM

Quote:

mine are all set a tad low

setting the end carbs low can create an acceleration hesitation and stalling when coming to a stop. if you look at the end carbs they use a 4bbl secondary float bowl. the secondary 4bbl bowl has a lower float level than the primary to prevent fuel spillover during braking. when the bowl is reversed the lower fuel level can uncover the metering plate main orifices during braking. this creates a lean condition and stalling because the idle circuts are starved for fuel. best bet is to set the fuel levels on all three carbs to the bottom of the sight hole. sometimes the end carbs need to be set slightly higher to prevent the stall condition.

Posted By: Mr.Yuck

Re: Carb float setting, Holley six pack - 03/12/12 10:10 PM

Quote:

Quote:

mine are all set a tad low

setting the end carbs low can create an acceleration hesitation and stalling when coming to a stop. if you look at the end carbs they use a 4bbl secondary float bowl. the secondary 4bbl bowl has a lower float level than the primary to prevent fuel spillover during braking. when the bowl is reversed the lower fuel level can uncover the metering plate main orifices during braking. this creates a lean condition and stalling because the idle circuts are starved for fuel. best bet is to set the fuel levels on all three carbs to the bottom of the sight hole. sometimes the end carbs need to be set slightly higher to prevent the stall condition.

never had any of those issues... I run a holley electric pump and it stays on 6psi. I guess if I were to shake the car gas would slosh out. they are juuust at the point where one more hair and they'd drip.