downdraft carb

[Mike/Nebraska]

I'm putting a downdraft intake with a #94 carb on my Model A. The motor has a "B" cam and a 5.5 Snyder's head. What kind of pump is a good buy and what kind of fuel regulator and what pressure should I run? thanks

[Duffy1]

Mike ;

You can do a search and get some good info on this .

[PC/SR]

Under 3 psi. Napa has a "low pressure" electric pump that is rated at I think 4 psi, but mine is mounted down inside the frame and the pressure at the carbs is between 2.5 to 3 without a regulator. That is with 5/16 inch steel tubing with hose connectors at the pump and carb ends to allow for vibration.

[V4F]

mr. gasket makes a 2-3# pump , no regulator needed . excellent pump . ive been using one for a few yrs now .


Part No. 42S Specs: 2-3.5 PSI, 42 GPH.

***** this is a 12vdc but they do make a 6vdc

[Russ/40]

Checked, could not locate a 6volt on their site.

[BRENT in 10-uh-C]

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I have used a 12v pump successfully on 6v which provides just enough volume & pressure to work well.

[Mike V. Florida]

Originally Posted by BRENT in 10-uh-C

I have used a 12v pump successfully on 6v which provides just enough volume & pressure to work well.

My brother did the same thing on his T.

[gz]

Snyders sells the appropriate regulator for a Stromberg downdraft. 1 1/2-2 psi.

[Rock Hornbuckle]

Holly makes a pres. reg. for the Holly 94. It comes preset at 2.7 PSI. Be sure to use a pres. gauge to be certain of the pressure. Summit part # HLY-12-804.