Distributor drive set proper, but can't spin svda way to adjust

[2type2]

Interior mechanics/physics of a distributor? That's not in my current bank of knowledge .... I need to be schooled.
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[bsairhead]

On a vacuum and mechanical or mechanical only distributor you set the timing to the mechanical only all in point. 28-30 degrees BTDC. Assuming you have a pulley with the correct marking for TDC and that your distributor vac line or lines are installed correctly under no load it would be expected to see close to 40 degrees at full in throttle.

[2type2]

I know. Idle is at 34-35-° mechanical advance at 850 rpm, I am trying to get 30° max at idle, not up to 35° ar idle. I'm not familiar with adjusting. the limiting tabs at the weights.
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[Jason37]

[Fender38]

[mikedjames]

I think it works more by the oil splashes on top of the drive gear. The nose of the distributor is resting in a pool of oil which reaches the hole no matter which way it faces. From where it gets pumped up the inside of the distributor by a spiral groove in the shaft inside the distributor.

Also the window is a good place to drop the spring into the engine...
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[2type2]

Smh.NOT making shit up dude,thanks. Confused working on 2 engines simultaneously , doing same conversions , leading to my miscommunicating.
PROBLEM IS THIS:
Idle at 850 ,dwell at 50, advance at 7.5 btdc----- strobe shows max mechanical advance going to 35° at 34-3500 rpm--vac plugged-----want it at 30° max. Won't idle well if set at other than 7.5 btdc.
I am seeking instruction on readjusting the distributor stops which control the weights, so my max mechanical advance will be at 30°.Overheating is the problem to eliminate.
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[bsairhead]

I would reset your dwell to 44 and recheck your timing.

[2type2]

Dwell at 44, why?That's way low.
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[2type2]

While I always appreciate help and insight ,it often escapes me why people offer suggestions without stating the expected outcome or what the results of any approach would/should be. Just a simple -"here's what you're looking to see happen- or not happen" -would go a long way in being able to grasp the whole concept of where the test or adjustment is leading
I learned to drive in a 63 bug and after screwing around with them for over 45 years on and off ownerships of different ones, I still don't claim to know more than enough to just get me in trouble,and hopefully get me home.¹
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[bsairhead]

[bsairhead]

The outcome of adjusting your dwell is it changes timing. A change of only 0.10 mm (.004 in.) in the point gap will alter ignition timing about 3 degrees.

[Fender38]

[bsairhead]

What model distributor are you using?

[2type2]

Dist is a "recommended by" cip1 Chinese clone, svda. What am I "living with" by leaving idle timing at 3.5°? As currently set it idles well, yet it won't idle well at all if off of 7.5 btdc.
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[bsairhead]

[Clatter]

Egads!
Welcome to the Samba..

Remove the distributor,
Strip off the cap, rotor, pull the point plate,
And down in there you will see the advance weight mechanism.
Look carefully and you’ll see two little arms that stick up and limit how far the weights can move.
They are long enough that you can bend them in with needle-nose pliers.
This will limit advance.
Put it back together and check it with your light.

Might take a try or two.

Have fun!
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What’s That Noise?!?

[chrisflstf]

Maybe idle speed needs adjusted when you have the advance set correctly

[BFB]

“Egads!” Is right! Three pages of discussing setting a dizzy… wtf?
This is one of the easiest things to do, especially on a vw.
Follow what clatter said to limit timing.
Vw doesn’t care where the gear is or which dizzy cap tower is number 1 as long its timed according to #1 cyl.
If your reading 30* advance at idle on an svda then you probably plugged your vacuum can into manifold vacuum.
K.i.s.s. Because it is…
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[67rustavenger]