A better choice is the .005 distributor over the .009. The .005 is set up static at one deg. BTC and at that setting it will fire at 28 deg. at full RPM. This is better for hand proping due to less chance of kick back. The .009 is set up at 10 deg. BTC static and that will give you the 28 deg. advance you need at full RPM. Parts are more redeily available for the .009 like cap and rotor. I think they both use the same points. You should be getting about 2600 RPM static. I sure wouldn't use a vaccuum advance distrubutor not even in a car.
-Joe > > Message: 3 > Date: Sun, 1 Apr 2007 09:23:12 -0500 > From: "Mark Langford" <[email protected]> > Subject: Re: KR> RPM > To: "KRnet" <[email protected]> > Message-ID: <001b01c77469$4799d340$6701a8c0@VAIO> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > > Eric wrote: > > > I am getting 2100 rpm with a 52/48 prop static.The engine runs very > > smoothly,and responds well but on increasing throttle at > 2100 rpm the > > engine quietens and revs drop.On throttling back I can get > 2100 again > > and very smooth running.The engine is a 2 l VW as > new,running on twin > > Zenith/stromberg carbs.Ignition (for now) is a VW Points > > distributor.with centrifugal advance and vacuum advance.I > intend going > > for a Compufire ignition system with backup, later on,but > would like > > to hear your views,on this engine going quiet and rev drop on > > increasing throttle above 2100 revs static.< > > Sounds like the timing is retarding at higher throttle > settings, which would not be surprising if you have the > vacuum advance/retard unit plugged into the wrong kind of > vacuum source. You need to make absolutely sure that the > timing is doing what you think it's doing, and understand > fully the operation of that particular distributor and the > vacuum sources that operate it. > > Most folks replace the stock distributor with something with > pure mechanical advance (like the Bosch 009). It makes > timing dirt simple. You set it up for a maximum advance of > something like 30-32 degrees BTDC at full throttle (which > ought to be over 2500 rpm, for sure), and then readjust idle > speed for whatever advance you get at idle. > > Mark Langford > email: N56ML "a" hiwaay.net > website: www.N56ML.com ******************
