Hi Tommy, Thanks for the input - its the only stick with it advice I?ve gotten.
I?d love to stick with the Scat?s (price, they are neat, and supposedly they ?flow? exceptionally well). But I get a lot of advice that they do not cool well, resulting in valve train (and other) problems. How are they not interchangeable? If you mean the crank, yes I understand that I?ll have to have the case machined to accommodate both bearing 3 and the nose bearing (#4). Total for bearing, machine work and Revmaster crank comes out about $1200. I think the stroke is 78mm - which is the same as the Revmaster. The current HAPI Magnum Plus crank set-up looks pretty good, but I keep getting told that the prop will ?depart in flight? - something I would prefer to avoid. Owen List-Post: krnet@list.krnet.org Date: Sun, 22 May 2016 15:28:59 -0500 From: Tommy Waymack <5blindate at gmail.com <mailto:5blindate at gmail.com>> To: KRnet <krnet at list.krnet.org <mailto:krnet at list.krnet.org>> Subject: Re: KR> Best Cylinder Heads for VW Message-ID: <CANwmPb0VhRdrpkhcgSDoosxRzTX9PB=+FHADaBstUjjnKkEjBg at mail.gmail.com <mailto:CANwmPb0VhRdrpkhcgSDoosxRzTX9PB=+FHADaBstUjjnKkEjBg at mail.gmail.com>> Content-Type: text/plain; charset=UTF-8 HAPI and Revmaster are not interchangeable,Stick with what you have.Tommy W. On Fri, May 20, 2016 at 7:57 PM, svd via KRnet <krnet at list.krnet.org <mailto:krnet at list.krnet.org>> wrote: > Hi Guys, > > I?d like to get opinions on best cylinder heads for and aircraft vw. > (yes this is sure to stir the muck). > > I have an new/old HAPI Magnum 82 (78mm stoke, 94mm cylinders, SCAT split > heads). > > I think I?m going to replace the crank with a Revmaster, and I?m looking > into replacing the heads. > > I could have Swain ceramic thermal barrier coat the pistons, valves and > head for $600 - but I don?t know it that would really fix the heat issues > with the poorly finned SCAT split heads. > > So what to replace them with?? > > CB 44 > http://www.cbperformance.com/ProductDetails.asp?ProductCode=1443 > <http://www.cbperformance.com/ProductDetails.asp?ProductCode=1443> > or > > > Revmaster 49 > http://revmasteraviation.com/?p=125#more-125 > <http://revmasteraviation.com/?p=125#more-125> > > > vs > > MOFO 50 > > http://www.mofoco.com/item/MOFOCO_050_BIG_VALVE_AIR_COOLED_VW_CYLINDER_HEAD/234/c52 > > <http://www.mofoco.com/item/MOFOCO_050_BIG_VALVE_AIR_COOLED_VW_CYLINDER_HEAD/234/c52> > > Or something else entirely? > > Cheers, > Owen >
