Timing by flywheel mark?, How do I time engine by flywheel mark? Options

[pistonboy]

Hello

I have put a Pertronix module in my distributor. I cannot see the timing marks on the blower cage. Isn't there suppose to be a TDC mark on the flywheel I can use?

Also, I have carbs on the engine, if that makes a difference.

Thank you.

[VaccaRabite]

There is a mark on the flywheel that is not easy to use. I would not bother with it.

Pull the inspection plug on the fan shroud. Big black round thing directly in the middle of the top of the fan shroud and directly above the fan.

You timing marks will differ as to what engine you have. But if you are using a digital advance variable timing light you will want to use the TDC timing mark, not the red line. The TDC mark is sometimes an uncolored line, sometimes a stamped "0". If you are using an analog light, use the red line (27 degree mark). And of course don't discount a prior owner painting all sorts of different things on the fan that will confuse the hell out of you but made sense to him.

Its easiest to use a mirror (I used an inspection mirror on a pole from the auto parts store) to bounce the timing light into the hole and see the result. that way I can work the throttle with one hand, and work the timing light and mirror with the other.

As you look down the timing hole in the shroud, there are usually 2 notches. One on the "engine" side of the shroud that is slightly harder to see, and one on the "Firewall" side of the shroud that is easier to see. in my car the one that was easier to see was also slightly off, so I use the mark on the engine side that is harder to see. Since I use a mirror, it really makes no difference. But if you are trying to lean over the car and see it without a mirror you will assume that VW hates us and wants us to feel pain. Just remember that these engines were supposed to go into Buses and rear engined cars, making the timing hole and the engine side notch very easy to use.


Zach