"NEW" reproduction oil pump VS original

[steve hackel]

Hello to all you mechanical guys out there: in trying to find a good original oil pump core for rebuilding, I have struck out the last 4 times trying to get something worth rebuilding. At this point between the cost of the cores and the cost of the shipping, I am nearly at the point of the reproductions that Brattons & others offer in their catalog. Have any of you bought & used one of these - have you taken one apart to inspect it; quality of the gears, machine work and tolerances that would provide a good supply of oil for a rebuilt engine. I hope that someone can shed some light on this issue. regards, Steve

[Bruce_MO]

I rebuilt an original pump that I thought was a good core, and when I tested it by running it on my newly rebuilt engine, it took well over 2 minutes to get oil to flow out of the oil return tube (I had cut up a spare return tube and installed a section of clear 3/4" ID rubber tubing to see the flow). I thought that was way too long, so I purchased and installed a new pump from Bratton's and I then had oil flowing in 25-30 seconds. So I'm definitely OK with the new pumps.

[John LaVoy]

We reviewed the new pumps when they first came out. We still have one in the roadster and it is putting out good pressure and is holding up very well.

[James Rogers]

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I don't know what you did to rebuild a pump that is that bad. I rebuild all my pumps and can get oil out of the hole in the block with the hand crank. I can have oil in the valve chamber in 20 to 30 seconds or less.