Rover aluminum V8 engines aren't really that rare. Land Rover still
produces them and I think the Morgan +8 is still Rover V8 powered. They are
popular MGB conversions so you might ask in the MGB list if anyone has a
spare. Rebuildable cores were going for $800-$1000 a couple of years ago-
more than a TR-6 block but not outrageous.
One thing to note when installing a supercharger is that you DO NOT want a
high performance camshaft- if you put one in you're just wasting the thing.
Long duration high lift camshafts are designed to help get more air/fuel
into and out of the engine, and they do this at the expense low RPM torque
and volumetric efficiency. With a supercharger the engine does not need any
"help" breathing since the blower forces the air in. Since you need to run
a fairly low compression ratio if you want a decent amount of boost you
don't want a camshaft that drops your effective ratio even further by
opening early and closing late.
I highly recommend David Vizard's book "Tuning the A-Series Engine". While
not Triumph specific (the A-series engine was used in the Mini and Sprite),
he explains what do to, what not to do, and WHY, and backs it up with real
world data he has collected over the years. When someone says "roller
tipped rockers are better" he tries them and tells you they are better and
why. When someone says "roller rockers with needle bearings are better than
those with bushings" he tries both and concludes that they aren't worth the
price difference for most applications.
-Erik
--
Erik Quackenbush, V.P. Operations, Midwest Filter Corporation
1-847-680-0566 fax: 1-847-680-0832 http://www.midwestfilter.com
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