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Post by mitch1971 on Feb 13, 2014 21:10:57 GMT
Would be appreciated thanks
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Post by rab on Feb 13, 2014 21:36:55 GMT
run it at half throttle max for at least 500 miles let the rings bed in you may get advised otherwise but its what i do after top end replacement
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Post by mitch1971 on Feb 13, 2014 21:56:51 GMT
Cheers mate that's what I thought but elsewhere was saying just 50 thought that was really low
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Post by rab on Feb 13, 2014 22:30:02 GMT
thats why they have to change there rings every 1000 miles lol
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Post by partanen on Feb 14, 2014 7:36:24 GMT
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Post by rab on Feb 14, 2014 23:18:51 GMT
half throttle on a molossi isn't as gentle as you might think . and it may be less miles to run them in but i always take it easy for around 500 i use the fact a new bike is 1000 miles to run it all in .so a new head and piston half that. isn't sip higher performance more of a track upgrade im asking as im unsure as that would be why they need different running in and port de burring before there actually fitted
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Post by partanen on Feb 15, 2014 9:16:08 GMT
For new bike they make the most important break-in procedure on dynamometer at the factory. Piston rings will settle at that point.
When my friend bought his Hayabusa, he rode like it was stolen. The bike gave best dynamometer results around here.
2 stroke may be different than 4 stroke in this case. But I'm not sure is it after all.
Scooterwest says you have to smoothen the port edges of new cylinder. Or you get troubles pretty soon.
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Post by joey on Feb 15, 2014 11:27:56 GMT
This is my personal opinion, and how I've always done it, so it's up to you ...........
On an iron kit I use cheap mineral oil for the first 3 tankfuls, synthetic, (or even semi synthetic, is too slippy to scrub the barrel and rings,) and take it easy... no more than 40mph and plenty of gear changes.
After that I use my normal oil (Castrol Power 1,) and then still take it easy but give it a good thrash for short blips.
A Nicasil barrel is a different beast....... again I use mineral oil for the first 2 tankfuls and take it easyish, after that the rings are scrubbed and off I go.
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Post by mitch1971 on Feb 17, 2014 15:30:49 GMT
Would be appreciated thanks cheers for all the help |
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Post by sbwnik on Feb 18, 2014 21:15:20 GMT
Ask a hundred people, you'll get a hundred answers.
On a new engine, or a newly rebuilt one, it's as much for bearings and seals as rings, but rings shouldn't need more than 100 - 150 miles before they're bedded in. Just ensure they're gapped properly.
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