[Healeys] Rough running 100M
Larry at patersondesign.ca
Wed Aug 2 17:35:53 MDT 2017
Hi folks - here's one for you to ponder. For the past many years I've raced
my 100M without a problem. Lately however at around 4500 RPM under load it
balks and stutters running quite rough. I've checked timing, changed the
condenser several times checked carbs and all the other usual stuff. When
not under load it revs freely. The motor has a billet crank, roller
rockers, aluminium head, 100S pistons, lightened flywheel etc and regularly
ran up to 6500 - 7000 RPM with no issues. It also has a Mallory distributor
and is running 24 degrees of advance. Any advice on where to look next would
be much appreciated.
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