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Workshop => Engine and Bottom End => Topic started by: kevin wcmo on January 21, 2014, 05:01:59 PM

Title: bore size ?
Post by: kevin wcmo on January 21, 2014, 05:01:59 PM

on a 86 jug with the extra thick sleeve installed with the stock 86 length rod, what is the max bore on these?  i have seen pistons up to 69.5, but i thought i have seen builds with a 72mm bore on a stock looking jug.  is that right?  and if so, what pistons are they using?  thanks

Title: bore size ?
Post by: kevin wcmo on January 21, 2014, 08:43:21 PM

is the sleeve that is required to be relieved for the head studs considered a bb sleeve?  if so, where is a source for the pistons?  thanks

Title: bore size ?
Post by: rsss396 on January 22, 2014, 06:52:11 AM

The 72mm stock cylinders have custom sleeves installed in them. LA sleeve can do this but these are very prone to head gasket failure, not that they can't work but a new ESR cylinder is a much better investment.