Dump the clutch and bog?

[Chevy 88]

So when I am at stop sign and I dump the clutch, peddle to the metal - It takes off like a bat out of hell!

Frame twisting, screeching, WTF are you driving like that for, kinda thing. Zoom Zoom.

But I have a reoccurring problem, if I drop the clutch and pin it to win it from a dead stop onto a left or right hand turn - I notice pulsing, or a surging power loss as I graduate through the 20-60 MPH range (wide open, slamming it through the gears.). Maybe 2 or 3 mild drop-outs on acceleration - during the acceleration throughout that range. Like it's starving for fuel from time to time.

I had the float level set higher before, but it caused engine flooding when parked on a hill - so I lowered the floats to about what the OEM spec is. I tried changing my fuel pressure regulator from 4 to 6.5, but that didn't seem to help.

Maybe the floats are being held closed by the G-force effect on the fuel? The fuel "floods" the side of the float bowl that keeps the float up?

I'm open to ideas.



Oh, and here is the dumbest Google picture that I could find to go along with this post:

 

[SquareRoot]

It's the operator. Remove and replace.

 

[bucket]

It's the operator. Remove and replace.

Lol, I was going to say that it's an electrical problem. As in, there's a short between the driver's seat and the steering wheel.

 

[Chevy 88]

Seems like a throttle body or propane conversion would solve it.

 

[Sad Sack]

Is EFI an option? No issues with fuel sloshing around with EFI.

 

[Grit dog]

Seems like a throttle body or propane conversion would solve it.

Gets harder each post to decide whether you’re serious or not.
Have to assume you’re not most of the time, as…if you are, bless your heart.
So driving straight no problems, sweeping curve, problems. I’m gonna say it’s not the curve in the road despite your observations.
But who knows. Sounds like a cobbled together fuel delivery system. Because Im pretty certain that truck don’t have the power or handling to g-force its way into a fuel starvation situation unless it’s real low on gas or your backwoods fuel system ain’t cutting it.

 

[Chevy 88]

Gets harder each post to decide whether you’re serious or not.
Have to assume you’re not most of the time, as…if you are, bless your heart.
So driving straight no problems, sweeping curve, problems. I’m gonna say it’s not the curve in the road despite your observations.
But who knows. Sounds like a cobbled together fuel delivery system. Because I'm pretty certain that truck don’t have the power or handling to g-force its way into a fuel starvation situation unless it’s real low on gas or your backwoods fuel system ain’t cutting it.

Its a pretty standard fuel setup. 1406 with an auto choke, mechanical secondaries. New fuel pump, fuel pressure regulator, and an inline glass fuel filter. The only thing unusual would be the a 2" Tall Ported Phenolic Carburetor Spacer. Aside from a float that is adjusted too low, what could cause fuel starvation under WOT at higher RPM? Definitely seems to be more noticeable after making hard turns or going up a fairly steep grade.

400 motor (possibly modified) WOT @ 5K RPM. The fuel system should be able to keep up with that, no?

 

[xm20k]

Wait a mechanical pump with a fuel regulator? Most stock style mechanical pumps won't make enough pressure to need regulated especially the 15 GPM auto part specials most places carry. I'm running an 80 GPM Edelbrock pump, and it only makes 6-7PSI Feeding duel AVS2s.

BTW those glass fuel filters are the cause of a lot of vehicles that look like your profile pic, would delete/replace with a metal or plastic one immediately.

Amazon.com: WIX Racing Filters Fuel Filter : Automotive

Buy WIX Racing Filters Fuel Filter: Filters - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

[Chevy 88]

Wait a mechanical pump with a fuel regulator? Most stock style mechanical pumps won't make enough pressure to need regulated especially the 15 GPM auto part specials most places carry. I'm running an 80 GPM Edelbrock pump, and it only makes 6-7PSI Feeding duel AVS2s.

BTW those glass fuel filters are the cause of a lot of vehicles that look like your profile pic, would delete/replace with a metal or plastic one immediately.

Amazon.com: WIX Racing Filters Fuel Filter : Automotive

Buy WIX Racing Filters Fuel Filter: Filters - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

I have several different types of fuel filters on the shelf, including the one you sent a link to. I only used the glass one because it was handy and I have a bunch of them. As for being a fire hazard, you might be right. I have it positioned in a way that it cant break by getting bounced around, but anything is possible. Maybe I will change it out though for something less breakable.

 

[bucket]

I have several different types of fuel filters on the shelf, including the one you sent a link to. I only used the glass one because it was handy and I have a bunch of them. As for being a fire hazard, you might be right. I have it positioned in a way that it cant break by getting bounced around, but anything is possible. Maybe I will change it out though for something less breakable.

Throw them all away. They don't break and leak, they are just poorly manufactured and can suddenly start dumping fuel at any time.

 

[Chevy 88]

Throw them all away. They don't break and leak, they are just poorly manufactured and can suddenly start dumping fuel at any time.

I think before I threw them away, I would give them to someone I don't like.

 

[Sad Sack]

Well if ya had a certain type of Holley:

Pardon Our Interruption

But the Edelbrock 1406 and sudden acceleration issues needs more research.

 

[Chevy 88]

Well if ya had a certain type of Holley:

Pardon Our Interruption

But the Edelbrock 1406 and sudden acceleration issues needs more research.

Cool! I have used them in fuel tank racing applications, but I didn't know that they made them for carbs.

 

[Sad Sack]

Cool! I have used them in fuel tank racing applications, but I didn't know that they made them for carbs.

Your issue just sounds like fuel slosh on WOT, but I'm not the brightest bulb on the tree so...

 

[peats]

You shouldn't be busting on Steve's website