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6934 ARC High Performance Air Filter Adaptor

8th Oct 2014

FRIDAY, MARCH 25, 2011 The New 6934 ARC Air Filter Adapter for GX200, GX160, and Clone engines.Here is the new air filter adapter I have been giving y'all sneak peeks of on ARC's facebook. It is for the clone and GX200 type engines.This thing is has been in development for a long time and has gone through so many different prototypes that I've lost count.*Meets the rule specs for AKRA/WKA Box Stock and BP*Out-flows anything else available on th …
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Pulsing the Fuel Pump on a GX200/Clone

8th Oct 2014

MONDAY, JUNE 9, 2008 Pulsing the Fuel Pump from the Rocker CoverI drilled a hole to insert a 1/8" pipe nipple into the rocker cover. The hole is below the baffle plate in the rocker cover so it is pulsing directly from the rocker chamber. The red vent tube is above the baffle plate. I have raced this a couple times now and it works very well. …
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On Rod Bolts

Posted by Mike Gifford on 8th Oct 2014

MONDAY, APRIL 4, 2005 On Rod Bolts, By Mike GiffordMy name is Mike Gifford; I'm "Outrider" in the 4Cycle.com forums, the guy that commented on how happy I was to see a fastener tightening procedure that made allowances for the differences in friction coefficient (and hence applied torque required) when different thread lubes are used on threaded fasteners. At the time, I promised you that I would eventually send you some comments on fasteners an …
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Are You Unbalanced?

Posted by Carl Amundsen on 8th Oct 2014

WEDNESDAY, OCTOBER 29, 2003 Are you Unbalanced?By Carl AmundsenSeveral years ago when we were developing our crankcase ventilation system for the Tecumseh Star engine, I got some seat-of -the-pants experience with the value and need of crankshaft balancing. I was accustomed to driving a 3” bore, 3” stroke test engine, which had one of our billet crankshafts in it. The 3x3 crank had been balanced, and ran very smooth considering it was producing …
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