Mechanical temp sensor

LARRY70GS · May 22, 2019

72skylarkconvt said: ↑

ok. No idea how you will tell me later how to read/set for total timing of 32*
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I'm having a hard enough time trying to explain to you how to set your initial timing. I hope it gets easier, but I have lots of patience.

72skylarkconvt · May 22, 2019

I get it now that we are going off that indicator. I know how the light gets hooked uo, number 1 plug front drivers side, moving the distrib, removing vac, plugging. Not all is lost one me. ha ha ha

Abel Andres Duque · Aug 15, 2019

LARRY70GS said: ↑

#1 plug is the front plug on the driver's side of the engine. The mechanical advance consists of 2 weights that rotate with the distributor. Centrifugal force cause the weights to move out as the distributor spins faster and faster. The 2 weights have springs that oppose the centrifugal force. At some point the weights overcome spring tension and move all the way out and stop. As the distributor slows down, the springs pull the weights back in. As the weights move out, they alter the position of the rotor to advance the timing.. The amount of mechanical advance in each distributor is governed by a pin that moves in a slot. The length of the slot determines how much mechanical advance is built into that distributor. This varies with the part number distributor which is meant for a specific engine size and model year. The spring tension determines at what RPM, the weights move to their outermost position (full advance). Changing the springs alters the RPM when full mechanical advance occurs.

There is a timing mark on the harmonic balancer. There is a scale on the timing cover. The scale typically runs from 0 to 12*. It pays to wipe off the timing scale and highlight the timing mark with white paint before you do anything. Setting initial timing involves disconnecting and plugging the hose to the vacuum advance, loosening the distributor hold down bolt JUST ENOUGH so that you can BARELY turn the distributor by hand. THEN start the engine. Point the light at the timing cover and see where the line is in relation to the scale. To advance the timing, turn the distributor counter clockwise when looking at it from the top. To retard the timing, clockwise. The distributor turns half the speed of the crank, so 1* of distributor rotation equals 2* at the crank. Move the distributor slowly and in very small increments.

If you can understand and accomplish this much, I'll tell you how to check and set the total advance.

I
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Man you go above and beyond , I've been in different forums for other car makers and I gotta say this is once of the better ones.

Mart · Aug 16, 2019

LARRY70GS said: ↑

I would not grind anything.
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Pics of temp sensor housing/casing i.d.
Thin at bottom, about .030 so no grinding!

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Mechanical temp sensor

LARRY70GS a.k.a. "THE WIZARD" Staff Member

72skylarkconvt Well-Known Member

Abel Andres Duque Member

Mart Gold level member

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