Grumpyvette: Do you have any articles on balancing V8 engines when all component weights are known and crank maximum bobweight is also known? Please advise. Thanks.[/QUOTE]
will this help?
A crank with just 2 ounce-inches of imbalance sees 14.2 lbs of force at 2,000 RPM. That means each time the piston changes direction, a 14 lb hammer is knocking on the bearings (and subsequently the crank). Speed it up to 4,000 RPM, and that force climbs to 56.8 lbs, at 8,000 RPM, you have 227.2 lbs smacking each bearing, twice per revolution. When an engine is in balance, these heavy forces are countered by the counter weights of the crank shaft. To add a little extra insurance, the main caps and rod bolts were provided by ARP.
http://victorylibrary.com/mopar/crank-bal-c.htm
viewtopic.php?f=38&t=3900&p=28672&hilit=balancing#p28672
http://www.centuryperformance.com/engine-balancing-for-life-power-amp-efficiency-spg-145.html
http://www.torquecars.com/tuning/engine-balancing.php
http://www.eddiesvalvegrinding.com/balancing.htm
http://www.completeautorepair.net/engine_balancing.htm
http://www.babcox.com/editorial/ar/eb10330.htm
http://www.carcraft.com/howto/ccrp_0803_engine_balancing/index.html
will this help?
A crank with just 2 ounce-inches of imbalance sees 14.2 lbs of force at 2,000 RPM. That means each time the piston changes direction, a 14 lb hammer is knocking on the bearings (and subsequently the crank). Speed it up to 4,000 RPM, and that force climbs to 56.8 lbs, at 8,000 RPM, you have 227.2 lbs smacking each bearing, twice per revolution. When an engine is in balance, these heavy forces are countered by the counter weights of the crank shaft. To add a little extra insurance, the main caps and rod bolts were provided by ARP.
http://victorylibrary.com/mopar/crank-bal-c.htm
viewtopic.php?f=38&t=3900&p=28672&hilit=balancing#p28672
http://www.centuryperformance.com/engine-balancing-for-life-power-amp-efficiency-spg-145.html
http://www.torquecars.com/tuning/engine-balancing.php
http://www.eddiesvalvegrinding.com/balancing.htm
http://www.completeautorepair.net/engine_balancing.htm
http://www.babcox.com/editorial/ar/eb10330.htm
http://www.carcraft.com/howto/ccrp_0803_engine_balancing/index.html