LEAKOIL Forum

What I meant by "valves colsed" was as if you are adjusting them,ie
your rockers should be out and you should have your gap .006.
also when static timing,the lite will lite when points OPEN which means
the lite will lite at 4 different positions,hence the reason you need to know that you are tdc#1
Bill

Is top dead center for #1 the same as #3? If I turn it to the notch the rotor points lets say 10:00 and turn it 360 and the rotor faces 4:00 . Are these both tdc for 1 right.I just have to line up the wires accordingly?I have a German 009.It sounds like it wants to start but just won't get over that hump.

framingsilly wrote:Is top dead center for #1 the same as #3? If I turn it to the notch the rotor points lets say 10:00 and turn it 360 and the rotor faces 4:00 . Are these both tdc for 1 right.I just have to line up the wires accordingly?I have a German 009.It sounds like it wants to start but just won't get over that hump.

No. It could look the same when you rotate the engine, unless you check where the rotor is pointing. It's either on #1 or #3, but they are not the same.

Let's get back to basics on the type IV. See if this helps... http://www.ratwell.com/technical/FindTimingMark.html

Here is the other link from Ratwell...
http://type2.com/library/electrip/timemark.htm

Here are a few other articles. Some are for 914 or type I, but principal is the same...
http://www.pelicanparts.com/techarticle ... adjust.htm
http://www.vw-resource.com/find_tdc.html
http://www.vwtrendsweb.com/tech/0106vwt ... djustment/
http://www.vw-resource.com/tune-up.html#tdc

Thanks 6v I'm just going to do some reading for awhile.

The pully mark will line up on the timing scale at tdc for #1 and #3.The rotor will be 180 from #1 when at #3. That's why you need to
know you are at #1 when static timng.#1 piston at top of cylinder and both valves of #1 closed. (top of compression stroke,ready to fire).
If you have someone to help,this may be the best way to determine tdc for #1. Remove pass side valve cover, Identify #1' valves (rockers) the one closest to the frnt of bus is #1 exhaust,the next one back is #1 intake. Have you helper rotate the engine CLOCKWISE,
keep watching these two rockers, When you see the intake (2nd one from frnt) start to open (rocker going down),you are close. after this rocker goes all the way down and comes back out STOP. You may have to continue just a little to get your pully mark to line up.When it does,check to be sure you have your .006 gap at both rockers that you were watching.You are know at tdc for #1. Where ever your rotor is pointing is where your #1 plug wire will be

Awsome thank you,such a good explanation Bill.

OK I had my wife turn the engine and when the rocker as discribed above got into that spot I had to turn it a little more Clockwise (as I was facing the pulley) to get to a notch on the pulley .This is the kicker ,it's the mark 180 deg. from were I thaught it should be.When I timed the engine last year when it was runing I was using that mark.Is it possible for a engine to run if your backwards like that 180 off ? I think I'll grab my buddy tonight to turn the engine a little smother that might help she was struggling a little.

It's possible that someone may have installed the distributor drive gear 180 degrees off. Try using this position for TDC. Then change the position of your spark plug wires on the distributor cap to the correct firing order 1-4-3-2.

Hey,not really confussed about the distributer's logic , it's the oriantation of the fly wheel to the time were the #1 cylinder is suppost to fire.The valves on that cylinder are suppost to be opening only at that time (I think ) #3 's valves shouldnt be doin the same thing right?I know the pistons go to top dead center at the same time,but the exhaust valve and intake valve should be on a different schedule right?I know I'm asking tons of questions but I'm a slow learner <oo>Peace
u
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framingsilly wrote:Hey,not really confussed about the distributer's logic , it's the oriantation of the fly wheel to the time were the #1 cylinder is suppost to fire.The valves on that cylinder are suppost to be opening only at that time (I think ) #3 's valves shouldnt be doin the same thing right?I know the pistons go to top dead center at the same time,but the exhaust valve and intake valve should be on a different schedule right?I know I'm asking tons of questions but I'm a slow learner <oo>Peace
u
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Top dead center is when the piston is at the top of it's stroke and both valves are closed. This is when the air/fuel mixture is compressed and the spark plug is ready to fire and ignite the mixture. I hope this answers your question.