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oldcorollas
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
 
Re: Running in a new motor Sun, 02 January 2005 00:58 Go to previous messageGo to previous message
jeffro RA28 wrote on Sat, 01 January 2005 21:28

this will provide sufficient gas loading to build up pressure behind the top rings to ensure gas tight sealing against the cylinder walls.


thats the crux of it.
remember that NONE of your bearings should EVER have metal to metal contact. althought there may be some highspots ont he bearing surfaces, if they do touch, then the motor is too tight (imo). running in is to knock off the highpoints of the bore walls so you have a good mixture of valleys and flats.. valleys to hold oil and flats to seal to the ring (via the oil film provided by the valleys).

good luck Smile
Cya, Stewart
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SubjectPosterDate
Read Message   Running in a new motor andrew_mx83Fri, 31 December 2004 12:40
Read Message   Re: Running in a new motor people100Fri, 31 December 2004 23:30
Read Message   Re: Running in a new motor mickSat, 01 January 2005 00:00
Read Message   Re: Running in a new motor mr2driftSat, 01 January 2005 00:14
Read Message   Re: Running in a new motor ChuckLandwehrSat, 01 January 2005 05:01
Read Message   Re: Running in a new motor jesseT18Sat, 01 January 2005 05:30
Read Message   Re: Running in a new motor mrshinSat, 01 January 2005 09:44
Read Message   Re: Running in a new motor jeffro RA28Sat, 01 January 2005 10:28
Read Message   Re: Running in a new motor  oldcorollasSun, 02 January 2005 00:58
Read Message   Re: Running in a new motor brett_celicacoupeSat, 01 January 2005 10:56
Read Message   Re: Running in a new motor ed_ma61Sun, 02 January 2005 01:30
Read Message   Re: Running in a new motor KyoshoSun, 02 January 2005 10:08
Read Message   Re: Running in a new motor andrew_mx83Fri, 07 January 2005 02:30
Read Message   Re: Running in a new motor drift86levinFri, 07 January 2005 02:41
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