The Ford Barn

ldj1002 · 07-27-2011, 10:00 AM

I have oil pump out. In a pan of gas I can't turn it fast enough to get it to pump. Put a drill on it and it squirts out good, I guess about 6" or so. I had read in a previous post that if you restrict it it will pump lots of pressure. I put fingers over holes and had no problem holding, so not much pressure. However some gas came up around the shaft so it wasn't restricted completely. Is there a good way to tell the efficiency of the pump?

MrTube · 07-27-2011, 10:44 AM

Gas is most likely WAY too thin to allow the pump to work right. You need to try it with oil, I think you will be surprised in the difference.

Patrick L. · 07-27-2011, 01:50 PM

I think these pumps are pretty bulletproof.. What are the clearances and how worn are the end plates?? If the end plate is worn is can usually just flip it.. I'd re-try it with oil also, it'll probably start working..

Mikeinnj · 07-27-2011, 02:10 PM

Oil is much safer than gas also. Turning a pump with an electric drill in gas is an invitatioin to disaster......

85930tudor · 07-27-2011, 11:18 PM

yes the gas does not lubericate and can dislodge crap in the pump. take it apart and inspect it. do it now or later.....Dave

700rpm · 07-28-2011, 12:58 AM

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Check your tolerances and replace bushings and shaft if necessary. These are real easy to work on and you may as well make it good while you have it out.

Richard Lorenz · 07-28-2011, 08:02 AM

You might not need the gasket on the bottom if the gears are short enough. You do not need a leak-tight seal at the bottom. The clearance between gears and bottom should be as small as possible in order to maximize pump efficiency.

07-27-2011, 10:00 AM	#1
ldj1002 Senior Member Join Date: Mar 2011 Posts: 181	Oil Pump question I have oil pump out. In a pan of gas I can't turn it fast enough to get it to pump. Put a drill on it and it squirts out good, I guess about 6" or so. I had read in a previous post that if you restrict it it will pump lots of pressure. I put fingers over holes and had no problem holding, so not much pressure. However some gas came up around the shaft so it wasn't restricted completely. Is there a good way to tell the efficiency of the pump?

07-27-2011, 10:44 AM	#2
MrTube Senior Member Join Date: Jun 2010 Location: New Jersey Posts: 1,471	Re: Oil Pump question Gas is most likely WAY too thin to allow the pump to work right. You need to try it with oil, I think you will be surprised in the difference.

07-27-2011, 01:50 PM	#3
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Oil Pump question I think these pumps are pretty bulletproof.. What are the clearances and how worn are the end plates?? If the end plate is worn is can usually just flip it.. I'd re-try it with oil also, it'll probably start working..

07-27-2011, 02:10 PM	#4
Mikeinnj Senior Member Join Date: May 2010 Location: Northern New Jersey Posts: 1,262	Re: Oil Pump question Oil is much safer than gas also. Turning a pump with an electric drill in gas is an invitatioin to disaster......

07-27-2011, 11:18 PM	#5
85930tudor Senior Member Join Date: Dec 2010 Location: richmond ky Posts: 322	Re: Oil Pump question yes the gas does not lubericate and can dislodge crap in the pump. take it apart and inspect it. do it now or later.....Dave

07-28-2011, 12:58 AM	#6
700rpm Senior Member Join Date: May 2010 Location: Portland, Oregon Posts: 5,906	Re: Oil Pump question Sponsored Links (Register now to hide all advertisements) Check your tolerances and replace bushings and shaft if necessary. These are real easy to work on and you may as well make it good while you have it out.

07-28-2011, 08:02 AM	#7
Richard Lorenz Senior Member Join Date: May 2010 Posts: 447	Re: Oil Pump question You might not need the gasket on the bottom if the gears are short enough. You do not need a leak-tight seal at the bottom. The clearance between gears and bottom should be as small as possible in order to maximize pump efficiency.