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sd33 - pistons
Posted: Sun Aug 06, 2006 7:20 am
by Lawrence
Some of the sd 33 pistons are 3 ring and some are 5 ring. Is there a difference in performance ? Mine came with 3 and is rebuilt with 5. Noticed on one site, that sd 3 had compression of 20.8 in earlier mq and 21.5 in mk, why?
Re: sd33 - pistons
Posted: Mon Aug 07, 2006 3:21 am
by RMP&O
Lawrence wrote:Some of the sd 33 pistons are 3 ring and some are 5 ring. Is there a difference in performance ? Mine came with 3 and is rebuilt with 5. Noticed on one site, that sd 3 had compression of 20.8 in earlier mq and 21.5 in mk, why?
3 ring turbo'ed motor, 5 ring NA-motor. Don't see why you would use one in the other motor...unless a NA motor is turbo'ed. Lower compression is for the turbo'ed motor, higher for the NA-motor. Turbo came in both MQ & MK series. MQ is turbo'ed and MK is not?