Timming and tunning (consulted bently)

[Ghia Nut]

I have gotten my car running and the story gose that my friend that built the engine adjusted the engine without the vacume system hooked up and I took it home and installed the engine and ran it and it sounded ok. So I hooked it up, wrong might I add (had the front of the can hose hooked up correctly but hooked the back one to the manifold) and I took it back to him to get it adjusted. Car ran fine on the way home. Any way, I started looking at one of my history books and looked at a pic of the 1600 with the vacume hoses hooked up and about lost it, it was my fault but what ever. I went and hooked the hoses up properly. I took it out tonight with the hoses on correctly and it runs fine for the first 5 min with no problem... then when I apply load to the engine, it hits on two misses on the other and it starts to slowly lower the engine rpms, I might have even gotten a back fire or to. So I know that the engine needs the timing adjusted just a hair but my question is where do I align the notch(on the outer rim of the pulley) on the flywheel. I consulted bently but it says 5* after tdc and has a picture with a notch at 12 o'clock but says 5* . The question is, what do I set this notch to, the case, to actual 5* to the left of TDC or the right? Also, my friend said that the choke needs to be backed off a little and it causes the engine to cut out sometimes randomly, is there any way that I can adjust that? My flywheel is the stock flywheel and its on my 72 ghia if that helps any.
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'59 typ1 rajay turbo
'72 Ghia rajay 1641 dual 36DRLAs, 1 3/8" SS merged header and fat boy
78" GL Vert with ej22t swap
This will likely change tomorrow to something else.

[Randy in Maine]

Well I will take a shot at it, although that is not my specialty. I am still trying to figure out what my specialty is.

Here is the rap on hooking up the vacuum hoses correctly assuming you have what it came with....from www.type2.com including the dizzy which should say something like 113-905-205AN or 113-905-205AJ on it.

Distributor Vacuum Hoses - Where Do They Go?
by Jim Thompson
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Over the years, many a 71-74 Beetle and 71 Bus with Dual Diaphragm Distributors have graced my doors and about half the time the vacuum lines are backwards. So here's the poop:

First, take a look at your Vacuum can. On the flat side of the can is a hose fitting - for the larger (4.5mm GREEN) hose. This is the RETARD side.

Second, on the cone (or rounded) side of the can is the smaller hose fitting. This uses a 3.5mm hose, usually black. This is the ADVANCE side.

Third, look at your 34PICT Carburetor. The fitting on the LEFT side of the carb is for the ADVANCE side of your Vaccum can. Connect appropriately.

Fourth, look at your 34PICT Carb again. On the rear (RIR) of the carb should be a fitting up towards, but not on the carburetor top. This push-on fitting is just slightly larger than then one on the side. This is for your RETARD side of your Vacuum can. Connect appropriately with the 4.5mm Green Hose.

Fifth, Any other fittings on your 34PICT Carb are for the infamous Throttle Positioner sometimes improperly called a "Decel Valve". The fitting for this jewel is an angled one right at the rear base of the carburetor. Connect the small vacuum hose to it to the Throttle Positioner Diaphragm Fitting. If your Throttle Positioner has two fittings (as original on 71 Buses, 71-74 Beetles), connect another length of 3.5mm vacuum hose from that to the Throttle Positioner Solenoid, usually located in the left side of the engine compartment. If you don't have the Throttle Positioner, cap off all the remaining fittings on your carburetor.

If you're running one of those new replacement H30/31PICT carbs, the procedure above is the same as they come with these fittings like their distant 34PICT cousins. Original 30PICT Series did not have the RETARD fitting, except for Beetle Auto-Suck Models - BUT - this fitting was for the Auto-Suck Solenoid, not the distributor because they were still single vacuum models (Actually, the Auto-Suck use a combined vacuum/mechanical distributor similar to the 76-78 Buses). Buses don't have these, right? So use this fitting for your RETARD side of the Dual Diaphragm Can.

Timing is usually 5 degrees AFTER Top Dead Center when using a Dual Diaphragm Distributor, give or take a degree or two - no two engine setups or running conditions are the same, so you''' have to fool with with of course. One other thing - Strobe Light at idle speed with the hoses CONNECTED. Sorry, no static timing with these, except to initially set the distributor at 0 TDC, start the engine, then strobiscopically time it after it warms up.

I don't have the type 1 Bentley but from my Idiot book Chapter X, if you are running engine code AE or AH, the stock pulley notch is at 5* ATC so TDC would be slightly to the right (or clockwise) from the notch. You are looking to set the idle speed to 800-950 rpms and you time this thing with a timing light and with the vacuum hoses connected on and connected properly. You are looking to get the notch in the pulley right at the case seam. I put a dab of whiteout or paint on the pulley notch so that I can see it.

Make sure your points (if you have them) are set right on the money and the idle is set correctly BEFORE you time the engine.

Hope that helps.

[Ghia Nut]

this helps IMMENSLY, thank you!
_________________
'59 typ1 rajay turbo
'72 Ghia rajay 1641 dual 36DRLAs, 1 3/8" SS merged header and fat boy
78" GL Vert with ej22t swap
This will likely change tomorrow to something else.