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By lyonroad - 12 Years Ago
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I realize this subject has been partially covered in earlier posts, but I have a a question or two. I recently acquired a new Melling Oil Pump from Precision Oil pumps. I understand that it is a gear type pump. My Best Gasket set includes a Rotor Type Gasket shown here on the right and a Gear type on the left. The pump came with a Rotor Type Gasket. Is there a reason why the Rotor type would be used on the Gear type Pump? Is there a reason not to use the Gear type gasket. With the rotor Gear type gasket the orifice at the top in this photo (directly above the pump drive shaft) is fully covered with gasket material. The oblong opening in the gasket roughly lines up with a recess in the block but not to anything on the pump. A check on line seems to indicate that most gear type pumps come with rotor type gaskets.
Thanks, I appreciate your patience I hope to end this run on questions soon.
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By PF Arcand - 12 Years Ago
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Mark (lyon road); I have a Gear style pump on hand here. ( I would have sold it to you cheap, but that's beside the point..) Anyway, not exactly sure of the answer to your gasket question, but, if you look at your pump closely, that upper hole is a blind hole. Possibly for manufacturing reasons? Hope this helps?
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By lyonroad - 12 Years Ago
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Yes Paul, I noticed that. I'm just wondering why the holes in the gasket don't line up and why the Gear type pumps come with Rotor type gaskets. It probably doesn't matter, so if I don't hear from someone today I will just use the gasket (rotor type) that came with the pump and be done with it. I also have rotor style pump but I am unsure of its condition so I bought the gear style one from Precision Oil Pumps. He blueprints them and the cost is no more than one on ebay.
Thanks.
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