The Ford Barn

JWL · 05-13-2018, 01:06 PM

And the alternative is the spring material strength begins to fade at hot temperatures.

sidevalve8ba · 05-13-2018, 02:52 PM

I've got several old pumps around the shop. What's a good source for new springs?

cmbrucew · 05-13-2018, 09:47 PM

All gear pumps the output is determined by the gear size in gpm. The pressure in the the system will be controlled by the relief spring pressure. for these applications cavitation should not be a factor. In an older engine worn cam shaft bushings are the first culprit to look for.
Stock applications do not require Hi flow or high pressure.
Bruce

05-13-2018, 01:06 PM	#21
JWL Member Emeritus Join Date: May 2010 Location: Fitzgerald, Georgia Posts: 2,204	Re: Speedway Motors oil pump vs. stock Ford (Mercury) unit And the alternative is the spring material strength begins to fade at hot temperatures.

05-13-2018, 02:52 PM	#22
sidevalve8ba Senior Member Join Date: May 2013 Location: Harrisonburg, VA Posts: 842	Re: Speedway Motors oil pump vs. stock Ford (Mercury) unit I've got several old pumps around the shop. What's a good source for new springs?

05-13-2018, 09:47 PM	#23
cmbrucew Senior Member Join Date: Dec 2010 Location: North of sandy ago, CA. Posts: 2,064	Re: Speedway Motors oil pump vs. stock Ford (Mercury) unit All gear pumps the output is determined by the gear size in gpm. The pressure in the the system will be controlled by the relief spring pressure. for these applications cavitation should not be a factor. In an older engine worn cam shaft bushings are the first culprit to look for. Stock applications do not require Hi flow or high pressure. Bruce __________________ Works good Lasts long time