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Michael Taksa
Joined: 25 Jul 2001
Posts: 1396
Location: United States, Massachusetts, Boston
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 Posted: Wed Aug 15, 2001 9:28 am Post subject: Breaking an engine in |
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HOW???
After Top End replacement, on a stand? What RPM? How long?
What about if only a ring was replaced?
Related question, how do you get temp to 120 degrees before hitting the track? I can never get it higher then 100 by havving the kart on a stand. |
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Jarlath Keary
Joined: 02 Aug 2001
Posts: 25
Location: Ireland, not USA,
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| Posted: Wed Aug 15, 2001 10:03 pm Post subject: Breaking an engine in |
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From my experience with FA and JICA engines, we always run in the motors on-track. For a top-end we do 2 sessions:
1. Below about 10,000 rpm with lots of choke and set the carb a bit richer. (about 7 mins.)
2. Build up the revs gradually towards max. (another 6/7 mins.) with longer pulls and then choking again.
Then do another couple of minutes to pull up to full revs.
If a ring is replaced you dont need to run-in. Just make sure there isnt a burr on the end of the ring before you fit it.
Hope this helps,
Ja  |
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