Anthrax Mike

Does anyone run a Carter fuel pump?

http://www.racetep.com/webfuelspark.html#webfuel

This website was saying that they put out 60-70 gph and that it will only squirt it at 4 psi so therefore needs no regulator. But what if your running boost? 10 psi per say, how sufficient will that be? Is there always a need for a rising rate regulator or will a high enough gph make up for that?

And I'm not running FI, so I'm not dreafully worried about psi.

Thoughts?

trochoid

iTrader: (6)

You can run maybe 1 psi of boost before you run out of fuel pressure.

gsl-se addict

iTrader: (3)

Well, if you plan on boosting, you will need more psi than that. If you run 10psi boost, you will need the pump to do whatever base pressure (say 4 psi), plus however much boost you are running (in this case 14psi). Some guys use an efi pump, say from a GSL-SE, and use a return style regulator to bring the pressure down. It is a good idea to get a gauge and regulator even if you don't boost. They aren't too expensive, and you can't rely on the pump to control pressure. There is another thread where a guy was using a 7psi pump on his Holley with no reg. The fuel was pouring out of the carb. Turned out the pump was putting out like 13 psi without the regulator.

inuissus_cendi

what he said ^^^^ plus when shopping for a regulator, get a "boost referenced" one. That way the regulator will increase fuel pressure 1 psi for every 1 psi of boost. This makes the pressure stay perfect at all boost levels. and yeah it'll almost have to be a return-style. I've never seen a deadhead boost refernced regulator. Carter also makes an 18psi model though, so that would be sufficient for 10 psi of boost.

Anthrax Mike

Just the info I was hoping to get. Thanks.