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Post by thumptheton on Jun 25, 2005 14:06:14 GMT -5
I see on thumperstuff an upgrade for older (pre 80) oil pumps. Can anyone enlighten me on this upgrade? Thanks, Steve
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tc
Full Member
Posts: 139
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Post by tc on Dec 20, 2006 0:16:32 GMT -5
Hi guys I would also like some info re oil pumps I have a 1978 SR500 and have been told to fit a later oil pump , so the question is what's the advantage ?? more pressure ?? more volume ?? just what ..Thanks T.C.
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Post by SRwillie on Dec 26, 2006 20:27:49 GMT -5
The difference is that the pre 80 pumps have 3 screws to secure the pump/cover. The later has 5 screws. Better seal and oil pressure.
Willie
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tc
Full Member
Posts: 139
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Post by tc on Dec 28, 2006 21:03:14 GMT -5
Thanks Willie can I retrofit a later pump to a 1978 "e" model ?? T.C.
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Post by SRwillie on Dec 29, 2006 9:22:42 GMT -5
Yup! Just did it on my '78 E. The parts may still be available thru Yamaha as well. It carries a "99999-00996-00" part number which Yamaha used the 99999- for their updated/redesigned parts.
Willie
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