Posted by Owen Aaland on July 01, 2013 at 19:51:30 from (216.47.34.15):
In Reply to: W9 with M motor posted by Dave Meisner on June 30, 2013 at 17:56:30:
The idea may not be as far fetched as it first sounds.
If you can find a M&W crankshaft for the M engine it might not be too bad a fit for a W9. Standard stroke for the M is 5.25 versus the W9 at 5.5 inches. The M&W crankshaft gives the M engine a 5.75 inch stroke. Along with M&W 4.25 inch pistons (you may need a 264/281 block for this) you end up with 326 CID versus 335 CID in the W9. The longer stroke will compensate, at least partially, for the smaller bore.
Original pistons in the W9 are 4.4 inch diameter but 4.5 S&P sets were available to make it 350 CID. Engine rpm are nearly the same. High idle for the M is 1595 versus the W9 high idle at 1650 rpm.
This post was edited by Owen Aaland at 00:41:10 07/02/13 2 times.
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