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Old 02-14-2005, 11:35 AM
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sbc oil pump

While renewing the sump and main gaskets I also had to remove the oil pump obviously. While off I took it apart and noticed that there were no gaskets neither between pump and engine nor between the two pump halves. Is this normal? I don't think so just to make sure.

Furthermore what do I need to pay attention to while inspecting it and deciding whether to reuse it or not?

Between the pump drive shaft and the shaft extension which goes up to the distributor there was some kind of plastic sleeve which is broken. Can I get that seperately and what is it's proper name?

Oil pressure was good before disassembly, highest reading on the stock gauge at idle (don't remember the value though).

Regards
Martin

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Old 02-14-2005, 11:59 AM
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OIL PUMP

I am assuming it's a small block chevy??? If so It is normal not to have gaskets in those locations. Yes you can get the oil pump drive shaft sleeve separate. ( thats the plastic bushing between the oil pump and the drive shaft.) As far as the pump goes for the cost i would just buy a new one If it was me. But i am sure if you took the cover off the pump and checked for scoring on the face and the gears and it was ok you could re-use it... End play,or clearance should be kept to .0015" or less..... There is a certain amount of clearance between the gears also but i cannot remember off the top of my head what the top limit is......i think it's .002????

Keith
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Old 02-14-2005, 04:44 PM
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Yes it is a small chevy. Well I don't think I have a possibility at hand to measure that kind of fine runout at the time being. But one thing to start: Must there be no scoring on the face at all? Circles where the gear has turned are visible, does this mean it's shot?

Martin
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Old 02-14-2005, 07:52 PM
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It wouldn't hurt to get a new oil pump if it ia an old engine. It is cheap insurance.
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