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  View original topic: Distributor lobes
74aus Tue Sep 23, 2008 12:39 pm

I've got a question regarding a 009 distribuor tune up. I've read the stories about the 009 problem but this is what I have for now.
When I line up the pulley dimple or the 7.5 degree v notch to the crankcase seam, the lobe on the distributor is off of center in relation to the rotor and the distributor mark for #1 cylinder. If I rotate the crank pulley to place the lobe at exactly center on the points, the crank pulley is ATDC to 50 degrees. Is this normal? I placed the lobe at center on the points and set the gap and the engine runs with major hesitation.

Should I just use the lobe to set the point gap and never mind the position of the crank pulley? I thought TDC on the pulley would put the distributor cam lobe right at the highest point. Is this thinking wrong and am I confusing two different tune up issues? Your help is appreciated.
Dan

bon2198 Tue Sep 23, 2008 12:45 pm

read this:

http://www.aircooled.net/gnrlsite/resource/articles/instdist.htm

Glenn Tue Sep 23, 2008 1:28 pm

You have to set the timing by using a timing light.

To start set the engine to TDC and rotate the distributor until the rotor points to the #1 mark on the edge of the body. Then start the engine and use a timing light to set it to 30 degrees BTDC @ 3500rpm.

Yehan73 Tue Sep 23, 2008 1:59 pm

Only use the lobes to set the point gap(0.016). Make sure when you do this the engine is hot. The points expand when they are hot.
Quote:
To start set the engine to TDC and rotate the distributor until the rotor points to the #1 mark on the edge of the body. You only need to do this if you are using the static method to time the engine. If you have a timing light, then hook up the pickup to #1 spark wire and red wire to the left side of the coil (curent) and black wire to a good ground. Then start the engine.
It helps to see the timing mark if you put some whiteout on the timing mark prior to starting the engine.

74aus Tue Sep 23, 2008 2:09 pm

I had originally set the timing at 30 degreees at 3500 rpm and the engine ran fine at higher speed. The problem was with the stumble and hesitation at lower speed ( 1st & 2nd gear). That's when I went back to check the point gap and having set the #1 at TDC I found the rubbing block of the points was not centered on the lobe. Hence, the question.

I'll go back and rotate the pulley til it's at TDC and the distributor til the rotor is at the #1 mark. Then I'll recheck the timing with the light @ 3500 rpm. If that fails, guess I'll have to recheck the position of the #1 cylinder the hard way. Thanks for the info.
Dan

Yehan73 Tue Sep 23, 2008 3:36 pm

After re-reading what Glen wrote. Now I understand what he was trying to get you to do.

I am also using the 009 with 30 carb. I notice if I have a noticeable hesitation right off idle, then it's either timing is not advancing enough or my carb is not adjusted right. So check both, if the carb is set too lean or the idle is too low, then it will do the same thing

74aus Tue Sep 23, 2008 7:07 pm

Thanks for the help! I followed Glenn's advice, tried running around for a few miles and there was a noticeable difference. My next step will be to check the carb per Yehan73's suggestion. I have pulled instructions for setting the 34PICT3 carb from theSamba but it will have to wait till next Sunday as I begin my work week tomorrow for four 12 hour days. I'll post the update after I tackle the job. Thanks again!
Dan

li_gangyi Wed Sep 24, 2008 6:19 am

The 009 doesn't work too well with the 34pict3, you can minimise the flat spot on throttle by increasing the accelerator spray volume, but it's not the ideal way to do things... I'd start saving up some money and get a proper SVDA to go with your 34pict3

Yehan73 Wed Sep 24, 2008 7:39 am

I didn't know you had a 34-3. They don't work very good at all with a 009. If I were you I would get a SVAD they sell at www.CIP1.com or maybe from someone Samba. Or you can go with original DVAD. It will be the quickest and the best solution in the long run.



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