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Well we had some luck, it's amazing how much better the engine ran when the timing was set correct!!!!!!!! I did find an additional problem. The centrifugal advance was slow returning to the idle position. So I pulled the distributor out to take a look at the fly weights. After some carb cleaner and a closer look I think I found the problem. The two springs are not the same size! The bigger spring was too long and a significantly larger gage wire than the other spring. All of the distributor's I have ever taken a part had two springs the same size. Any ideas? Is this correct or another quick fix by the previous owner? The distributor NR is 311 905205 AF, bosch 0231172 011. ----- Original Message ----- From: "Shirley, James J CDR (CNSP N4341)" <Shirley.James@cnsp.navy.mil> To: "'Jim Adney'" <jadney@vwtype3.org>; <type3@vwtype3.org> Sent: Thursday, August 02, 2001 8:33 AM Subject: RE: [T3] Mystery wire > Thanks for the info, I'll give it a try tonight and let ya know what how > things go. > Jim S. > > -----Original Message----- > From: Jim Adney [mailto:jadney@vwtype3.org] > Sent: Wednesday, August 01, 2001 12:39 PM > To: type3@vwtype3.org > Subject: Re: [T3] Mystery wire > > > On 31 Jul 2001, at 9:58, Shirleyclan wrote: > > > the > > timing was set using the Bentley manual. The picture in the Bentley > > isn't really clear but the timing calls for 5 BTDC (engine code X). > > Looking at the pulley at TDC is the first line, then small space, next > > line (5 BTDC), then small space and two lines next to each other. The > > Elfrink book shows a pulley with marks that are close. > > This sounds like you need to advance your timing about 5 deg. > > The timing marks for 72-3 look like this: | | | |. They mark -5, 0, > 5, 7.5 deg, so you need to be timed to the third mark from the left > with the retard hose off, idle adjusted down. Then attach the retard > hose and readjust the idle. You can then verify that the retard has > pulled the timing back toward the -5 mark (first mark on the left.) > The Elfrink book probably shows the earlier 68-71 marks which > look like: | | | | . > > This will improve your low end. > > > The fuel pressure is set at 28 psi, I've been told I should raise > > it to about 35 psi, haven't done that yet. Maybe I can get to it > > this weekend. I am fairly sure the mechanical advance is working > > because when my vacuum advance can went bad, I could feel the > > mechanical advance kick in. Above idle it runs like a champ! > > Don't increase the pressure above 30. That will just pollute. If you > have a timing light you can see the timing advance when you up > the rpms. > > You won't get the vacuum advance to do anything in the driveway, > it only comes into play while cruising. It does nothing while > accelerating either. I know that this is counterintuitive, because we > all know that there are other dists where the vacuum advance does > everything. The vacuum advance that is part of the dists which also > have mechanical advance use the vacuum advance in an entirely > different way. These dists, including all the FI dists, use the > vacuum advance ONLY to supplement the mechanical advance > under conditions of partial throttle and light load. This is done by > controlling where the vacuum pickup is drilled. So we get NO > vacuum at idle, and none at medium or full throttle. > > - > Jim Adney > jadney@vwtype3.org > Madison, WI 53711-3054 > USA > > ------------------------------------------------------------------- > Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe >