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Ring Gap !!!!!!!!

1127 Views 4 Replies 5 Participants Last post by  Collinsautomotive
Based off man spec, Hellfire rings should be gap squared say 24-26 top and second ring in a boosted application(per 4.00 bore) apparently the trend is to open up the second ring .002 - .004 , my thing is that if they are gappped square already the second ring never sees the same heat therefore it will always be larger anyway ??? Granted man spec is usually just a starting point due to many variables, Whats right whats wrong ???
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You may need a larger than normal second ring gap to bleed of pressure build up between 1 st and 2nd ring otherwise this can lift top ring off its land.
As far as i can understand this is why piston manufacturer machine accumulator grooves between the two rings.
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