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03-26-2018, 01:57 PM | #41 |
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Re: Chasing the knock.
At least you're not afraid to "get into it".
Keep us updated. Paul in CT |
03-26-2018, 03:13 PM | #42 | |
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Re: Chasing the knock.
Quote:
Remove generator, fan belt, timing gear cover, timing gear. Than reverse process, and your done. Couple of hours work. |
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03-26-2018, 07:33 PM | #43 |
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Re: Chasing the knock.
I think that is a neat video!
You can sure hear and see that cam gear "slap" when the valve spring pressure on it changes. I did about the same amount of disassembly when I got mine home, only it was to change the leaking water pump and four blade fan. No better way to learn how to disassemble and reassemble a Model A and a good opportunity to back flush the radiator. I've had it apart three or four times since then.
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Early '29 CCPU that had a 4-speed, but not any more.......in the family since '62 Last edited by 1955cj5; 03-26-2018 at 07:44 PM. |
03-26-2018, 07:43 PM | #44 |
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Re: Chasing the knock.
Thank You For All The Great Pic's Some Of The Best I Have Seen On Ford barn
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03-26-2018, 07:51 PM | #45 |
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Re: Chasing the knock.
Don't know if changing the gear will cure your knock,but it will run better that's for sure.Valve timing that far out is bad..bet it wouldn't pull your hat off
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03-26-2018, 09:05 PM | #46 | |
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Re: Chasing the knock.
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Sent from my SM-N950U using Tapatalk |
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03-26-2018, 09:08 PM | #47 | |
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Re: Chasing the knock.
Quote:
Sent from my SM-N950U using Tapatalk |
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03-26-2018, 10:01 PM | #48 |
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Re: Chasing the knock.
Nice Job !!
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03-26-2018, 10:32 PM | #49 |
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Location: Hebron, CT
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Re: Chasing the knock.
The knock sounds familiar and my guess is the timing gear is worn. You can do a simple test to identify if it is the timing gear. Remove the timing pin on the bottom front of engine. Start the engine and slowly insert the timing pin into the timing hole with the rounded end of pin. Push the pin against the cam gear and if the knocking noise changes, gets softer this means it needs to be replaced. Usually the wear occurs on the ID of the gear or the nut can come loose creating excessive backlash.
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03-27-2018, 12:17 PM | #50 |
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Re: Chasing the knock.
Just checked the backlash on the cam gear and it looks terrible. What exactly does this mean?
https://youtu.be/ttluk5eYS_U Sent from my SM-N950U using Tapatalk |
03-27-2018, 01:12 PM | #51 |
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Re: Chasing the knock.
It just means that your fiber timing gear is so worn that as the engine is running and driving the timing will be constantly advancing or retarding because of the sloppiness of the meshing of the gears. its operation will be very inconsistent. When you put your new cam gear in you will notice a very nice even running engine.
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03-28-2018, 10:09 AM | #52 |
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Re: Chasing the knock.
It means you valve timing does not correspond with your piston position.basically your fixing a performance issue hoping it fixes a knock...
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03-28-2018, 02:52 PM | #53 |
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Re: Chasing the knock.
Crankshaft gear I got from Snyder's differs from the gear I removed. When I line up the keyways you can see the teeth are about half a tooth off. Also the timing marks are 1 tooth different. Would this not throw the timing off?
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03-28-2018, 03:25 PM | #54 |
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Re: Chasing the knock.
Visibly loose in the timing gears! Keep up the good work.
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03-28-2018, 03:40 PM | #55 |
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Re: Chasing the knock.
Also my timing cover camshaft plunger is shower some wear. The X is still visible and I would assume it's still good. Your thoughts? Also spring feels stiff. I believe it to be good.
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03-28-2018, 03:49 PM | #56 |
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Re: Chasing the knock.
That is probably a gear from the 70ts. They were off a bout a 1/2 tooth. Good thing you went all the way and found it. It will have more power now.
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03-28-2018, 03:54 PM | #57 |
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Re: Chasing the knock.
I also hope you are going with a good cam gear. bronze is the best, alum gear next, then laminated next, macerated is junk in my book.
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03-28-2018, 04:26 PM | #58 |
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Location: Middle Tennessee
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Re: Chasing the knock.
Ok. New gears and still have crazy backlash. So what is this telling me? I see hundreds of post about backlash but have yet to see one say what it means if you have a lot.
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03-28-2018, 04:38 PM | #59 |
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Re: Chasing the knock.
Your latest picture doesn't show gear backlash. It appears to me to show crankshaft endplay. 2 different animals.
Gear back lash is checked by inserting feeler gauges between the crank gear and cam gear teeth. As mentioned before it should be in the .004-.007" range. If a .010" strip will slide thru, you still have too much lash. |
03-28-2018, 04:57 PM | #60 | |
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Re: Chasing the knock.
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Sent from my SM-N950U using Tapatalk |
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