slacker1bob Posted August 6, 2009 Report Share Posted August 6, 2009 I have a 421 cub motor with Boss one piece billet intake and 35mm keihin pwk carbs. Is there a trick or a very narrow air filter that keeps the mid pipe from hitting the filter Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted August 6, 2009 Report Share Posted August 6, 2009 Cascade Heat wrap on the LH stinger tube and let it rest on it. The RH side doesnt need one. I run the 10 deg angled filters on my PWK's and Boss intake. The 20's were to much Quote Link to comment Share on other sites More sharing options...
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