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Grant, the new redline on your tachometer should be 2575 with the 85 hp. engine. That doesn't mean you should get 2575 in cruise. Also, your prop diameter is now too large. It is supposed to be 71". Syd Cohen NC94196 [EMAIL PROTECTED] wrote: > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > Coupers. > I have a 1946 415C with an 85HP , the book says the RPM should > be 2575. When I bought the plane it had a 74-48 prop. and was a > 75HP that would turn 2275 RPM, as the book said. We changed > the venturi and jet, now I get 2350 RPM, We are at 3500 GL. > Are we overlooking something to gain the extra 225 RPM or am > I shooting to high. Would really appreciate any comments. > Thanks Grant & N13CL > ==^================================================================ This email was sent to: [EMAIL PROTECTED] EASY UNSUBSCRIBE click here: http://topica.com/u/?aVxiLm.aVzvvT Or send an email to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
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