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01-19-2020, 09:11 PM | #21 |
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Re: Incorrect timing on pulley of 53' Mercury
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01-19-2020, 09:27 PM | #22 | |
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Re: Incorrect timing on pulley of 53' Mercury
Quote:
You could use the cable tie method to see if the TDC marks align with actual TDC on the motor. I did a video on it. https://youtu.be/dn446jjCVRg Mart. Mart, I will do the "zip tie method" the first thing tomorrow. The nice thing is I already have a pointer. Last edited by Merc Cruzer; 01-19-2020 at 09:48 PM. |
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01-19-2020, 09:49 PM | #23 |
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Re: Incorrect timing on pulley of 53' Mercury
The diameter of the pulley makes no difference.
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01-20-2020, 12:17 AM | #24 |
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Re: Incorrect timing on pulley of 53' Mercury
And the timing pointer if you have a wide belt front cover with a small belt pulley would be sitting away from the pulley.
That would tell you if you have a mismatch there. And you shouldn´t have a 25 degree difference from that. |
01-20-2020, 06:02 AM | #25 |
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Re: Incorrect timing on pulley of 53' Mercury
Just for reference this is the dot to keyway location on '50-'51 crank pulley.
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01-20-2020, 08:28 AM | #26 |
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Re: Incorrect timing on pulley of 53' Mercury
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That would tell you if you have a mismatch there. And you shouldn´t have a 25 degree difference from that.[/QUOT The pointer in my car: |
01-20-2020, 09:08 AM | #27 |
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Re: Incorrect timing on pulley of 53' Mercury
This is the correct pointer setup for your car.
You can see a circle in the casting where the pointer is mounted when used with a widebelt pulley. |
01-20-2020, 09:43 AM | #28 | |
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Re: Incorrect timing on pulley of 53' Mercury
Quote:
Thank you |
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01-20-2020, 09:55 AM | #29 |
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Re: Incorrect timing on pulley of 53' Mercury
Do the ziptie test....that will narrow down the investigation !
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01-20-2020, 10:51 AM | #30 |
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Re: Incorrect timing on pulley of 53' Mercury
A couple of questions. What is the dwell you set the points to (should be 27 degrees) and, are you sure you have the timing light connected to the #1 plug wire?
No insult intended, just grabbing at straws! Last edited by V8 Bob; 01-20-2020 at 11:12 AM. |
01-20-2020, 11:48 AM | #31 |
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Re: Incorrect timing on pulley of 53' Mercury
Ok folks, I have to admit putting a foreign object into the cylinder, of a perfectly good engine would have not been my first choice. But here it is. Bottom line, the new TDC, is still 1 1/2" off the original pulley marker.
The arrow picture #1 arrow = new TDC, # 2 arrow = is the original TDC pulley button. The zip tie method test "confirmed that the TDC was in fact with the timing mark on the pulley aligned with the timing pin on the front of the timing cover." I apologize for the confusion. Last edited by Merc Cruzer; 02-04-2020 at 11:29 AM. |
01-20-2020, 12:24 PM | #32 |
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Re: Incorrect timing on pulley of 53' Mercury
Well, now you know where TDC is and have a point to set the timing from.
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01-20-2020, 12:39 PM | #33 |
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Re: Incorrect timing on pulley of 53' Mercury
After checking with an old time flathead racer in the local club, he feels the pulley has slipped. It is on the key by only 1/4". The only way to confirm this would be to pull the front timing cover and do a visual inspection. Pulling the bolt and washer and looking from the front will not give you the visual required.
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01-20-2020, 01:24 PM | #34 |
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Re: Incorrect timing on pulley of 53' Mercury
Just to be sure: you did bring the piston up against the stop, mark the pulley, reverse the rotation back to the stop, mark the pulley, and divide the two marks for TDC?
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01-20-2020, 01:53 PM | #35 |
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Re: Incorrect timing on pulley of 53' Mercury
I have run across dampers that have slipped relative to the keyway. But that is due to a rubber section between the outer and inter parts of the damper. Not sure I see how that could happen on a flathead solid metal pulley.
At this point not sure it matters if you have a true TDC mark to work with, 59a and earlier engines do not have a timing indicator on the pulley and get along fine for timing once TDC is found and marked. |
01-20-2020, 02:24 PM | #36 | |
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Re: Incorrect timing on pulley of 53' Mercury
Quote:
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01-20-2020, 02:25 PM | #37 |
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Re: Incorrect timing on pulley of 53' Mercury
Boy, I don't know. If the front pulley was that far from being all the way on, I would expect it would be impossible to keep the fan belts on.
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01-20-2020, 02:26 PM | #38 |
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Re: Incorrect timing on pulley of 53' Mercury
Is the advance plate (red arrows) in the distributor up against the stop pins
(green arrows) ?
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01-20-2020, 03:39 PM | #39 |
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Re: Incorrect timing on pulley of 53' Mercury
Yes
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01-20-2020, 03:57 PM | #40 | |
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Re: Incorrect timing on pulley of 53' Mercury
Quote:
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