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  #1  
Old 9th August 2020
Brog Brog is offline
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Default Replacement oil pump year 74

I'm currently rebuilding a 1974 XL and noticed the oil pump body has a crack on the inlet for the oil pressure switch. Is it worth getting it reconditioned, providing i can find someone that will do it, or buying a complete unit. V Twin seems to be the only company that sells a replacement,Does anyone know anyone else that may sell a decent replacement or anyone had any experience with the V Twin pumps reliability.
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  #2  
Old 9th August 2020
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Quote:
Originally Posted by Brog View Post
I'm currently rebuilding a 1974 XL and noticed the oil pump body has a crack on the inlet for the oil pressure switch. Is it worth getting it reconditioned, providing i can find someone that will do it, or buying a complete unit. V Twin seems to be the only company that sells a replacement,Does anyone know anyone else that may sell a decent replacement or anyone had any experience with the V Twin pumps reliability.
I cracked one there myself several decades ago. IIRC, it's a pipe thread, so over-tightening it will do that. Got mine alloy welded - just take it to a guy that knows what they're doing. It worked fine/never leaked after.

Bill's Custom Cycles has NOS factory upgrade pump kit for K & XL 52-76 (new body and bigger gears); it's not complete, just re-use the bottom plate & breather tower. I'd buy that in a heartbeat over aftermarket - be surprised if aftermarket quality was even close.
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Old 9th August 2020
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Cheers ill try the repair route then check out the upgrade pump.
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  #4  
Old 9th August 2020
needspeed needspeed is offline
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The thread is not a pipe thread.
It has been posted on this forum that it's a 7/16-24. It is not.
It's a 15/32-24. An oddball, but that's what it is.

Cracked pumps are actually common. It's easy to over tighten because you're tightening a steel fitting that has a less than 1/2" thread into aluminum with a large 1" wrench. It's not the thread that seals the oil, it's the flat surface of the pump body against the flat surface of the fitting that does that. It only needs to be snug.

I've seen them welded successfully.

Actually there's one on ebay right now that's been welded.

https://www.ebay.com/itm/ENGINE-OIL-...AAAOSwwiVfJZij
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Old 9th August 2020
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your '74 wouldn't need the upgrade kit.it already has the taller scavenge gears beginning in '72.he does have just the oem pump body.i've seen it for 75.00.
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Old 10th August 2020
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The biggest problem is actually getting the pump off and back on again.

If your going to pull your pump off, consider another fix at the same time.
The wet sump problem.

http://xlforum.net/forums/showthread.php?t=2074153
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