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Old 09-24-2019, 06:09 PM   #21
George Miller
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Default Re: Can the TDC pin be off by 90 Degrees?

I would check for a vacuum leak at the intake.
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Old 09-24-2019, 09:25 PM   #22
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Thumbs up Re: Can the TDC pin be off by 90 Degrees?

[IMG][/IMG]Okay - I’m a noob. When I was trying to manually find TDC via visual inspection, i goofed. I placed a 1/2 pipe nipple down through the spark plug hole on top of one of the VALVES. I thought it was resting on top of the piston.

Funny how much “brighter” I became after shining a 720 lumen flash light through the spark plug hole.

Anyhow - I still have something wrong with the setup. I’ll reach out again after I get everything put back together.

Finally - I’ve attached a photo of the timing cover (looks like a model A cover to me) and the timing gear/cam dimples.

Last edited by Tablemaker; 09-24-2019 at 09:44 PM. Reason: Uploaded photos
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Old 09-24-2019, 09:36 PM   #23
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Default Re: Can the TDC pin be off by 90 Degrees?

Don't forget to click the "upload" button after you've found your picture...
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Old 09-24-2019, 09:45 PM   #24
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Default Re: Can the TDC pin be off by 90 Degrees?



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Old 09-25-2019, 07:09 AM   #25
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Default Re: Can the TDC pin be off by 90 Degrees?



https://www.flickr.com/photos/157983...posted-public/
Attached Images
File Type: jpg 48790896768_02cbb0395c_z.jpg (100.6 KB, 110 views)
File Type: jpg 48790896753_58f5fa4435_z.jpg (42.7 KB, 80 views)

Last edited by Tablemaker; 09-25-2019 at 09:43 AM.
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Old 09-25-2019, 09:35 AM   #26
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Default Re: Can the TDC pin be off by 90 Degrees?

Your timing cover looks right...thanks for the picture...

One other thing that hasn't been mentioned..

I've read that the bakelite/plastic distributor upper body can short internally between the traces to #3 and #4 cylinder's spark plug posts causing a miss-fire.

Here is a thread where it is mentioned..

https://www.fordbarn.com/forum/showt...39#post1768839

You might try swapping out the distributor upper body if you have a spare...


.
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Old 09-25-2019, 10:35 AM   #27
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Default Re: Can the TDC pin be off by 90 Degrees?

Use less blue-goo, it can, and often does, drop pieces off and plug the oil pump or oil lines, not good!
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Old 09-25-2019, 12:31 PM   #28
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Default Re: Can the TDC pin be off by 90 Degrees?

I agree. In fact I would not use that "Blue Goo" at all...
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Old 09-25-2019, 01:02 PM   #29
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Default Re: Can the TDC pin be off by 90 Degrees?

Looks like there could be 2 dimples in the picture which shouldn't be. But, it looks OK.

If you are now able to find the dimple with the timing pin you should be OK to be able to time it.
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Old 09-25-2019, 01:16 PM   #30
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Default Re: Can the TDC pin be off by 90 Degrees?

making something simple into a complete overhaul..just turn the rotor 180 degrees if it won't start and sounds horrible...# piston has two TDC...hold your thumb over the hole and crank engine when you feel compression that the correct TDC..set rotor to # 1 pin..job finished and then fine tune timing..timing pin in front is not ever needed..Take flashlite and look sideways at #1 plug hole ..you can see top of piston then bring it to top..sc

Last edited by 31Abone; 09-25-2019 at 01:24 PM.
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Old 09-25-2019, 01:44 PM   #31
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Default Re: Can the TDC pin be off by 90 Degrees?

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making something simple into a complete overhaul..just turn the rotor 180 degrees if it won't start and sounds horrible...# piston has two TDC...hold your thumb over the hole and crank engine when you feel compression that the correct TDC..set rotor to # 1 pin..job finished and then fine tune timing..timing pin in front is not ever needed..Take flashlite and look sideways at #1 plug hole ..you can see top of piston then bring it to top..sc
Why not just time it as intended?
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Old 09-25-2019, 02:40 PM   #32
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Default Re: Can the TDC pin be off by 90 Degrees?

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Why not just time it as intended?


I guess thats where the 'then fine tune the timing' comes in.
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Old 09-25-2019, 11:40 PM   #33
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Default Re: Can the TDC pin be off by 90 Degrees?

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I guess thats where the 'then fine tune the timing' comes in.
The instruction book walks you all the way through fine tuning. the biggest problem most have is they try to time without making sure all slack, in the gears and tabs, is taken into account.
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Old 09-26-2019, 05:19 AM   #34
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Default Re: Can the TDC pin be off by 90 Degrees?

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The instruction book walks you all the way through fine tuning. the biggest problem most have is they try to time without making sure all slack, in the gears and tabs, is taken into account.



I know. I know how to set the timing.
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Old 09-26-2019, 05:54 AM   #35
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Default Re: Can the TDC pin be off by 90 Degrees?

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I would check for a vacuum leak at the intake.
I agree.
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Old 09-26-2019, 12:21 PM   #36
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Default Re: Can the TDC pin be off by 90 Degrees?

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I know. I know how to set the timing.
I was just putting out a fact for the OP and anyone that may not know. We who know how to time an A engine never forget and realize how simple it all really is.
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Old 09-26-2019, 02:58 PM   #37
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Default Re: Can the TDC pin be off by 90 Degrees?

I am always wary of going by any timing marks ever since I came across a Vauxhal (GM to you guys) with superfluous timing marks drilled on the flywaheel. All became OK when we ignored these rogue marks and used the thumb over the plug hole technique to find Top Dead Center .
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Old 09-27-2019, 10:43 AM   #38
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Default Re: Can the TDC pin be off by 90 Degrees?

Model A's are the easiest car to set the timing on . A child could in many cases set the timing on the model A if given the simple instructions of using the timing pin . Many people simply overthink this very simple procedure and this is the main reason that so many model a's timing is so far off that they have no power and run hot .
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Old 09-27-2019, 10:55 AM   #39
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Default Re: Can the TDC pin be off by 90 Degrees?

Quote:
We who know how to time an A engine never forget and realize how simple it all really is.
Ditto, I was taught how in the '50s and am still on track.
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Old 09-27-2019, 11:11 AM   #40
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Default Re: Can the TDC pin be off by 90 Degrees?

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I know. I know how to set the timing.

No harm meant , my friend . So many people can't grasp this simple procedure is why we continue to try and help explain timing in the most simple way , in hopes that it may be understood .
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