John,
> Could this be because the higher compression engines (8.75:1) in the 18GK
> (my engine) needed the heavier connecting rods?
No because in HC form the 18V had even higher compression. 9:1. These motors
were pretty over-engineered so they decided to lighten the internal
components in an attempt to get something back from all the emissions gear
that was strangling the cars at the time. The early 18V motors were the most
powerful and most responsive of all the B motors. Just prior to that, the
1970 cars ran the heaviest rods, emission gear, and the 5 ring pistons. My
GT absolutely won't rev, but I have driven Bs from a year later that will
rev all the way out to 6000rpm no prob at all. Mine really does feel like a
tractor motor. <G> One retro step (IMO) was the replacement of the dual
chain timing chain with the single, but thats about it really.
Cheers,
Neil
--
61 A / 70 BGT / 68 CGT/ 56 BN2
URL: http://www.apphosting.com/mgstuff/
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