Originally Posted by 1Gary
Metric low tension ring sets do not have the same sealing capabilities as a standard set.They are more appropriately used in a race set up where drag tension is a concern.I don't want to open the topic of long rod vs short rod debate.I in fact believe in the use of long rod engines.What get's more complicated is whether the trade off of ring spacers is worth the long rod in a relatively low compression street application.I'm saying it isn't and in fact the longer rod (6" vs 5.7")isn't going to make that big of a difference.That we build long term good sealing street performance street engines that are reliable.
metric ring sets seal BETTER- which is why OEM's have been trending towards thinner rings for decades. and as I already noted a 6" rod DOES NOT require oil ring support on a 3.48" stroke. If you need new rods and pistons there isn't a single reason in favor of a 5.7" combo.