Tube-type shooters

[ArizonaGuy]

I see these on little Holley 80457s, but I usually don’t see them on bigger bore Holley carburetors. Why is that?

[1980RS]

Sometimes they have fuel pullover. My buddy has a bunch of little springs form someone that he put's under the squirter screw to keep the check valve in place. The figured it out with some video on a dyno test.

[rgalajda]

80457 holley carbs usually have .031" nozzle . If yours has the tube type nozzle , I don't believe they are original to the carb. I am not aware that Holley ever used tube type nozzles from the factory. Tube type nozzles are not considered as anti-pullover.

Tube Type nozzle. Directs the stream slightly different towards the booster. Some consider this to be a benefit , atomizing the fuel. I have never noticed any difference, or the need for.

Anti-Pullover nozzles were used on holley 4165 and 4175 spread bore carbs. The front venturi on these carbs were very small , producing a strong signal,

If you are having signs of pull-over, I would inspect the needle is not damaged/improper. Also the seat the needle sits on could be damaged/corroded. The seat can be cleaned/reformed using an appropriate sized check ball tapped on to it. If the needle and seat for the discharge nozzle is leaking badly , fuel can run back and cause a hesitation / or possibly pullover.

[rgalajda]

I should have mentioned the spread bore holley has a check ball in the metering block accelerator pump passage . If you shake the metering block , you should be able to here the check ball rattle. These metering blocks say "Casting Made In Japan" and have the Transfer Tube. They don't use a check needle under the discharge nozzle. That check ball does not have the wait of the check needle further requiring an anti-pullover nozzle.

[BillK]

I should have mentioned the spread bore holley has a check ball in the metering block accelerator pump passage . If you shake the metering block , you should be able to here the check ball rattle. These metering blocks say "Casting Made In Japan" and have the Transfer Tube. They don't use a check needle under the discharge nozzle. That check ball does not have the wait of the check needle further requiring an anti-pullover nozzle.

What a coincidence. I am doing a spread bore for a friend and have been trying to figure out for a week why there is no check valve under the squirters. I have called and e-mailed Holley 3 times with no response. Thanks for posting this !!!!!! Just curious how you found this out ? Now I can put this thing back together !!

[Tom68]

Several youtube videos of pullover from discharge nozzles online now, recently had it with a Edelbrock made Holley 94 on an 8BA flathead, should have video'd it, brand new carb, no accel pump discharge needle installed.

[rgalajda]

Several youtube videos of pullover from discharge nozzles online now, recently had it with a Edelbrock made Holley 94 on an 8BA flathead, should have video'd it, brand new carb, no accel pump discharge needle installed.

Your saying the discharge needle was missing/should have been installed ? The discharge needle installed fixed it ?

[Walter R. Malik]

The tube type shooters tend to pull-over fuel if the air velocity near them gets to fast.
Sometimes that is a good idea but, sometimes a weighted needle under them can be a good idea, too.

[rgalajda]

The tube type shooters tend to pull-over fuel if the air velocity near them gets to fast.
Sometimes that is a good idea but, sometimes a weighted needle under them can be a good idea, too.

By " weighted needle " are you referring to the standard discharge needle that it should have ?

[rgalajda]

I should have mentioned the spread bore holley has a check ball in the metering block accelerator pump passage . If you shake the metering block , you should be able to here the check ball rattle. These metering blocks say "Casting Made In Japan" and have the Transfer Tube. They don't use a check needle under the discharge nozzle. That check ball does not have the wait of the check needle further requiring an anti-pullover nozzle.

What a coincidence. I am doing a spread bore for a friend and have been trying to figure out for a week why there is no check valve under the squirters. I have called and e-mailed Holley 3 times with no response. Thanks for posting this !!!!!! Just curious how you found this out ? Now I can put this thing back together !!

The first one I restored didn't have one , the metering block rattled, and its not in the diagram or parts list. Also could not see a seat in the main body for one.

[Tom68]

Several youtube videos of pullover from discharge nozzles online now, recently had it with a Edelbrock made Holley 94 on an 8BA flathead, should have video'd it, brand new carb, no accel pump discharge needle installed.

Your saying the discharge needle was missing/should have been installed ? The discharge needle installed fixed it ?

Came without one, mate pulled one out of an original Holley, dropped it in, fixed.

[Walter R. Malik]

The tube type shooters tend to pull-over fuel if the air velocity near them gets to fast.
Sometimes that is a good idea but, sometimes a weighted needle under them can be a good idea, too.

By " weighted needle " are you referring to the standard discharge needle that it should have ?

Drill the center of the needle and add some lead ... or make some from mallory.

[Walter R. Malik]

I should have mentioned the spread bore holley has a check ball in the metering block accelerator pump passage . If you shake the metering block , you should be able to here the check ball rattle. These metering blocks say "Casting Made In Japan" and have the Transfer Tube. They don't use a check needle under the discharge nozzle. That check ball does not have the wait of the check needle further requiring an anti-pullover nozzle.

What a coincidence. I am doing a spread bore for a friend and have been trying to figure out for a week why there is no check valve under the squirters. I have called and e-mailed Holley 3 times with no response. Thanks for posting this !!!!!! Just curious how you found this out ? Now I can put this thing back together !!

The first one I restored didn't have one , the metering block rattled, and its not in the diagram or parts list. Also could not see a seat in the main body for one.

If the metering block rattles then there is probably a pump check ball inside and carbs with those blocks don't have needles under the squitters. They use "Anti pull-over" pump nozzles.

[Geoff2]

AVS Carter carbs used from 1968 -1971 on Chrys V8s had anti pullover acc pump nozzles. Not sure if the earlier AFBs had them.

[rgalajda]

"Drill the center of the needle and add some lead ... or make some from mallory."

That sounds like a ridiculous answer to a non problem.