Dwell - cannot get larger than 39, '74 2.0 - Barn Find Options

[ctc911ctc]

Hi,

Have been spending a great amount of time on timing.

Bought new everything (points, wires, coil, etc).

set the gap to .016 as per the manual and then the dwell came in at 25.

closed the gap more and cannot get the dwell above 40 (aiming at 45). Right now it is at 39.

Question: what would you chase first?

Points? (perhaps they are not engineered correctly) (they are not Bosch)
Dwell Meter ( I have 2 of the same manufacturer - I know, I know.....)
Ignition Cam? (car has 20K on it, should be ok)
Ignore the last 6-8 dwell points and go to the next thing (close enough)

Thank

[Jeff Hail]

Did you disconnect and plug the vacuum line?

Krusty speaks posthumously from the grave! Roll with it.

The CORRECT way to hook up the dwell meter is the positive lead to the point side of the coil (terminal "1" or (-)), and the ground lead to a good engine ground.

This kinda crap goes into the archives, and some newbie spends a year of his life trying to get his car started, trying every wrong trail until he gets to my post, if he lives that long.

When you get the dwell set, shut it off check to see that the rotor is pretty much centered on the line for cylinder #1 when the engine is at TDC #1. Fix that if it's wrong, then start the car, warm it up, and set the timing at the RED, BLACK, or unpainted full advance mark on the fan, 2800 RPM.. BOTH HOSES OFF. The mark is one fan blade BEFORE the first wide fan support. It MAY not be marked on both sides of the fan, and you mAY have to lay over the trunk lid and get your head right down over the access hole to see the mark. Report back.

The rest of you hang your heads in shame.

If you had any questions about how I got to be Cap'n Krusty, read your 17 answers to the original question.

The Cap'n, goin' easy on you

[ctc911ctc]

Jeff,

Funny you sent this, I read this thread prior to working on the timing.

As a EE I understand BACK-EMF and how the points/coil work. The dwell is set to the switched side of the coil or (-).

Seems to run OK, will try and set the points tighter than .010 and see if the dwell come up.

Thank you for the CapNKrusty reference.

C

Did you disconnect and plug the vacuum line?

Krusty speaks posthumously from the grave! Roll with it.

The CORRECT way to hook up the dwell meter is the positive lead to the point side of the coil (terminal "1" or (-)), and the ground lead to a good engine ground.

This kinda crap goes into the archives, and some newbie spends a year of his life trying to get his car started, trying every wrong trail until he gets to my post, if he lives that long.

When you get the dwell set, shut it off check to see that the rotor is pretty much centered on the line for cylinder #1 when the engine is at TDC #1. Fix that if it's wrong, then start the car, warm it up, and set the timing at the RED, BLACK, or unpainted full advance mark on the fan, 2800 RPM.. BOTH HOSES OFF. The mark is one fan blade BEFORE the first wide fan support. It MAY not be marked on both sides of the fan, and you mAY have to lay over the trunk lid and get your head right down over the access hole to see the mark. Report back.

The rest of you hang your heads in shame.

If you had any questions about how I got to be Cap'n Krusty, read your 17 answers to the original question.

The Cap'n, goin' easy on you