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Valve Spring Compressor

anytwowilldo said:
I've worked on a bunch of XRs and own one . I believe they go bad due to excessive heat. Go with aftermarket valve stem seals from Kibblewhite or similar.
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Maybe an oil cooler might help.
 
ST Guy said:
Maybe an oil cooler might help.
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People have made up all sorts of oil coolers for these. I think results are mixed mostly. The big fin heads seem to be more effective, but only really needed when you are makes more than the stock level of power.

I think the seals in my bike are bad simply because of age and sitting dry while the bike was not being ridden by the previous owner.
 
Sharky said:
I think the seals in my bike are bad simply because of age and sitting dry while the bike was not being ridden by the previous owner.
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if its burning oil & the leak-down test indicates the rings are sealing, you can place your bets on the valve seals being bad.
 
elskipador said:
if its burning oil & the leak-down test indicates the rings are sealing, you can place your bets on the valve seals being bad.
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The only time any oil is burnt at all is after starting if it sits for more than a few hours. The oil burnoff lasts 30-60 seconds. Longer if it sits for longer.

I am pretty confident in the diagnosis.
 
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