content22207 wrote: > Main bearings are >reportedly different. I do believe the main block castings are >identical, however (in fact are identical to B27). > That's actually a contradiction Bill because the journal shells are set into the block. FYI the crankpins are different between odd and even fire, but the main journals are all the same. The block castings are only different in terms of liner seat diameter otherwise they are all identical (as far as I've seen to date). The B27 I assume is the 2664cc engine and has 88mm pistons. There are various capacities set by stroke, but all PRV engines have either 88, 91 or 93mm pistons. Compresion is set by piston crown and conrods are all identical on even fire, and all identical on odd-fire engines. All PRV conrods are forged too - bet ya didn't know that :-) There're all sorts of possibilities for hybrid engines. I'm building one at the moment. Martin To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/