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Old 04-03-18, 17:12
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sevaun sevaun is offline
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What constitutes a refresh?

I've often heard the term "refresh" in relation to bike engines in hill climb cars. Can anyone tell me what's actually involved ie is it new bearings, piston rings, head of valves checked etc etc etc or what?

Sevaun (Richard Vaughan)
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Old 04-03-18, 17:52
Lolat492 Lolat492 is offline
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For any combustion engine I've taken it as:
Brg, rings, grind valves, all new gaskets and seals ie valve guide seals, cam chain and guides.
Check cams and crank, small ends, oil pump dimensions if internal to engine.

All on/in the long block, no ancillaries.

Must depend on the engine to a large degree.
I would want it listed as to what is done.
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Old 05-03-18, 20:38
gixxerthou gixxerthou is offline
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I've seen a few 'rebuilt' bike engines, from a few professional sources. To some folk, it's an external jetwash, to others it's a full stripdown, inspection and rebuild, replacing anything thats questionable. A build sheet is only as reliable and honest as the professional that put it all together.... caveats and emptors, with lots of cynicism required.

I'd love to name some good, some bad, but you know what it's like in this world of litigation, plus it's only my experience which is worth nothing.
There's one fine example of a very expensive 'professionally' rebuilt engine that I'm looking at right now for someone, from a well-known builder. Approaching the builder (in this case as with others) simply leads to accusations and abuse, not a redress. It's a criminal world.

I'll attach a picture of an example of the quality of the above build for your amusement, but yes, 'rebuilt' in my book means everything looked at, assessed and replaced if any doubt exists.

Some engines require more attention in areas where there is a specific weakness, but generalities apply.
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