Project "G-Velle", Pro-touring with patina

[Payton King]

grounded to the car or to the battery?

[65_LS1_T56]

Hey Payton, it is grounded to the chassis by the tank. The battery is grounded to both the body and also to the chassis. Would a ground cause a complete failure or just poor performance?
Thanks for the help!

[Payton King]

down by hooking the fuel pump direrctly to the battery once. Have no idea what I was thinking, I will blame it on the Miller lites.

If I can get a hold of Ron Schwarz, I will ask him his thoughts on our problem. He does not get on here often.

Is it sucking air are getting hot? Is that a race pump and not made for street driving?

[65_LS1_T56]

Originally Posted by Payton King

down by hooking the fuel pump direrctly to the battery once. Have no idea what I was thinking, I will blame it on the Miller lites.

If I can get a hold of Ron Schwarz, I will ask him his thoughts on our problem. He does not get on here often.

Is it sucking air are getting hot? Is that a race pump and not made for street driving?

lol, musta been a lot of Miller Lites Some quality homebrews get you to that point alot quicker

Ok, here is an update: It's not electrical. I spoke with engineering at Holley. The first pump I sent back was seized mechanically. They are thinking it is cavitating or straight up sucking air. He explained they are fixed volume pumps and move alot of fuel. They can create the "toilet bowl effect" -you know how you give a swirly That would make sense if you were just driving along with minimal sloshing. So I'm thinking I need to do something with the pickup inlet. Also, I can't see how the return line interacts with the pickup, hopefully its not pointing right at it or that could cause aeration too.

here is a shot of the pickup tube removed and placed directly above where it is mounted. Notice the slash cut doesn't point down, but more forward and up just a bit. Hmmm


hard to see but just above the writing on the tank there are three spot welds, that is where the baffle wall is that the pickup tube goes thru.

No need to call the big shooter in yet! I'm sure Ron could figure out the electrical gremlins though. I saw him in action at Kershaw on Tom's car, lol

Thanks Payton.

[Payton King]

after you figured the problem. My first thought was sucking air but I thought you were running a Rick's tank that was all baffled up.

I am suprised that your car was not stumbling. When mine would uncover the pump it was very noticable.

I did call Ron and asked him. He knows that those pumps are voltage sensitive and if for some reason your alternator is charging more than 14 volts they will burn out. But again, they said it was mechanical. You could always try a GM unit from an F body.

[65_LS1_T56]

Originally Posted by Payton King

after you figured the problem. My first thought was sucking air but I thought you were running a Rick's tank that was all baffled up.

I am suprised that your car was not stumbling. When mine would uncover the pump it was very noticable.

I did call Ron and asked him. He knows that those pumps are voltage sensitive and if for some reason your alternator is charging more than 14 volts they will burn out. But again, they said it was mechanical. You could always try a GM unit from an F body.

It is a Ricks, but an older version. It's a lot shallower (its only 6-1/2") than the current design. And evidently the newer version went to a revised venting design.

It was strange they both died without much notice. The first one stumbled maybe three times, 5 secs later it was done. The second didn't hiccup, just wouldn't accelerate then it stopped.
Holley does rate them as up to 18.5V operating voltage, don't think there is a way I could be generating that much. The voltmeter in the dash is rock solid around 13.5V when its running.

I'm considering other options at this point. If Holley is willing to work with me I'll try to make there's work first. I'm leaning towards multiple pickups with the Walbro tank pickups in each corner. Sounds like a good design project

Payton, you gonna make it to Motorstate? Ron's car is a taxi anyway, he'd wouldn't mind you ridin' all day

[Payton King]

May try and make it next year. I like Gingerman.

I had one of Rick's first tanks with the A1000 pumps. It would uncover at anything under half a tank. Got the new design and never had a problem, also changed and went with a walbro pump.