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Join Date: Jul 2001
Location: los angeles, CA.
Posts: 41,462
Garage
I'm about to assemble the crank and rods, then install in case along w/ cam and followers and put case together. We got some beautiful forged pistons from Duane Spencer @ Shasta Engineering and a stock 356SC cam. The cam that was in the motor was an old Racer Brown grind, (a name from way back in the time machine), and not even close to optimal for this engine. I checked the flywheel-to-main bearing clearance and did some minor balancing of the rods over the weekend. I got a cheap digital scale from Harbor Freight, (really accurate), and got scientific:

The pistons w/ pins turned out to be very well balanced w/ (2) @ 443 grams combined and (2) @ 444 grams combined. I will put the heavier two nearest to flywheel, opposite each other of course. This is only a 5500 rpm motor so this may be overkill but WTF, I want it to be smooth.


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Denis
Old 11-01-2010, 11:04 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #85 (permalink)