The comments/experience by Sid is exactly why I decided to Lean my Zenith alone. I had researched the use of a speedometer cable and such to have an in flight adjustable mixture but, I felt the mixture was way to sensitive and I would end up with a over rich or over lean condition at just the wrong time. Engine sputtering to dead or ring or valve issues. Oh, and leaking gas. I did not investigate the solution that Brian suggested and I will investigate it now. Over all, I have been very happy with the carb. Obviously I think a throttle body injection would be better at exact fuel air mixture and I think I seen someone mention a Mukini or something and that would be worth looking into. Jeff York Georgetown Scott County Airport KR2 2010 National Gathering Peoples Choice, Best Interior 2011 AirFest Best Experimental, Best Instrument, Best Interior
________________________________ From: Phillip Hill <phill.h...@gmail.com> To: KRnet <kr...@mylist.net> Sent: Friday, November 23, 2012 8:44 PM Subject: Re: KR> Re: Carbs for VW based engines Disappointing. On Nov 23, 2012 7:40 PM, "smwood" <smw...@md.metrocast.net> wrote: > I have a Zenith carb on my GPASC 2180 VW. I rigged a mixture control using > a VW speedometer cable. The mixture needle has too much friction from the > sealing gasket. The speedometer cable will wind up a full turn or more > before enough torque is applied to turn the needle. I will need both hands > to do a mixture change. If I loosen the gland nut enough to smooth out the > turning action, then fuel will leak around the needle shaft and drip on the > cowl and exhaust pipe. Until I can find a better control arrangement, I > have set the mixture to what seems about right, tightened the needle gland > nut and don't attempt further mixture changes while the engine is running. > Far from satisfactory since I have three systems for showing mixture > operation: 4 cylinder head temperature sensors, 4 EGT sensors and a digital > 14point7 Mixture Meter, and still cannot change the mixture setting in > flight. > Choke operation for starting and smoothing out running for warm up works > great. > Incidentally, the Great Plains carb model numbers are not the Zenith carb > model numbers. The Great Plains carb model numbers correspond to the > approximate displacement of the VW engines. > > Sid Wood > Tri-gear KR-2 N6242 > Mechanicsville, MD, USA > > > >> > > >> Does anyone have any experience with the Zenith carbs for VW based > > >> engines? > > >> Anyone currently running a Zenith? Pros and Cons. > > >> > > >> > ------------------------------ > > > > > _______________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > _______________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
