 Pic Request : Rotor while engine is well timed (27deg BTDC) |
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| Artfrombama |
 Apr 26 2025, 12:57 PM
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#41
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Member  Group: Members Posts: 274 Joined: 21-January 24 From: Alabama Member No.: 27,870 Region Association: South East States 
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Keep in mind at #1 TDC, could be on exhaust stroke OR compression stroke. Crankshaft turns two times each turn of the distributor.
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| Literati914 |
Apr 26 2025, 01:02 PM
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#42
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Senior Member Group: Members Posts: 1,928 Joined: 16-November 06 From: Dallas, TX Member No.: 7,222 Region Association: Southwest Region |
QUOTE(Superhawk996 @ Apr 26 2025, 01:33 PM)  .. The more I look at yours I think the dizzy drive is 180 +/- a tooth off Thanks for the info, but I don't think I'm out 180. I mean the fan mark lines up while rotor faces #1 plug/wire.. and the car starts and runs pretty well. |
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| Literati914 |
Apr 26 2025, 01:13 PM
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#43
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Senior Member Group: Members Posts: 1,928 Joined: 16-November 06 From: Dallas, TX Member No.: 7,222 Region Association: Southwest Region |
QUOTE(Literati914 @ Apr 26 2025, 02:02 PM) QUOTE(Superhawk996 @ Apr 26 2025, 01:33 PM) .. The more I look at yours I think the dizzy drive is 180 +/- a tooth off Thanks for the info, but I don't think I'm out 180. I mean the fan mark lines up while rotor faces #1 plug/wire.. and the car starts and runs pretty well. Hmm, ok looking closer I see what you mean about the orientation of the drive as it currently sit. Thanks for pointing that out. How in the world though does the distributor line up correctly like that though (IMG:style_emoticons/default/confused24.gif) seems like it would be sitting with the canister on the outside instead of where it's at (next to the oil fill tower)? |
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| Superhawk996 |
Apr 26 2025, 01:28 PM
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#44
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914 Guru Group: Members Posts: 7,012 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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QUOTE(Literati914 @ Apr 26 2025, 03:13 PM) Hmm, ok looking closer I see what you mean about the orientation of the drive as it currently sit. Thanks for pointing that out. How in the world though does the distributor line up correctly like that though (IMG:style_emoticons/default/confused24.gif) seems like it would be sitting with the canister on the outside instead of where it's at (next to the oil fill tower)? This is an age old question. It’s sort of a design flaw. I believe VW intended for the asymmetry of the dizzy drive slot to prevent distributor body from being installed 180 out from dizzy drive but it still can happen. What happens is the tangs on the bottom of the distributor can partially engage the drive even when 180 out. It will rotate the distributor rotor. What’s harder to notice is that the distributor body hasn’t fully seated. There are numerous threads here where people insist the distributor can’t be installed 180 out and later find out that it indeed was misinstalled . Then add in the ease with which the dizzy drive itself can be mis indexed and it’s sort of a recipe for chaos if attention isn’t paid to the details. I’ve learned all this the hard way long ago first hand. |
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| Superhawk996 |
Apr 26 2025, 01:33 PM
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#45
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914 Guru Group: Members Posts: 7,012 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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QUOTE(Artfrombama @ Apr 26 2025, 02:57 PM) Keep in mind at #1 TDC, could be on exhaust stroke OR compression stroke. Crankshaft turns two times each turn of the distributor. (IMG:style_emoticons/default/agree.gif) Make absolutely sure you are TDC#1 on the compression stroke (both valves closed). I assumed that you’re on Compression stroke when you took your photo of the dizzy drive but assumptions burn us!! Double check before reorienting the dizzy drive |
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| Literati914 |
Apr 26 2025, 02:20 PM
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#46
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Senior Member Group: Members Posts: 1,928 Joined: 16-November 06 From: Dallas, TX Member No.: 7,222 Region Association: Southwest Region |
Ok checked everything.. im on compression stroke. I clocked the drive gear (small “C” on the bottom). This looks like about 12deg., right?
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| Superhawk996 |
Apr 26 2025, 08:45 PM
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#47
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914 Guru Group: Members Posts: 7,012 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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QUOTE(Literati914 @ Apr 26 2025, 04:20 PM) This looks like about 12deg., right? (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/aktion035.gif) |
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