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Old 10-23-2017, 08:04 PM   #21
Wick
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Default Re: Knocking after installing new flywheel

Ok ready for this.... I had the same problem. It was the clutch fork shaft. I had replaced the shaft and the new one had the hole drilled in the wrong place. The fork was not centered and the throw out bearing would bind when engaged. Resulting in a knocking sound. Pulled the motor 4 times changing out flywheels, pressure plates,pilot bearings.
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Old 10-23-2017, 09:30 PM   #22
Marshall V. Daut
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Default Re: Knocking after installing new flywheel

Now, THAT'S FREAKY!!! Who'd have ever suspected the clutch fork shaft, unless it was the only thing replaced and all had been fine until then?
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Old 10-23-2017, 09:42 PM   #23
SeaSlugs
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Default Re: Knocking after installing new flywheel

Huh weird Wick...I will attest the one i got from snyders last year is working great...

And OP your 100% sure its from the flywheel area? Like it couldn't be the front pulley rubbing on something or some accessory inching forward?

You say it clicks /clunks even with the clutch out after its started clicking and clunking? Get it clunking - push clutch down again and put it in gear - did the clunking stop? I had a bad bearing in the trans that would clunk...
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Old 10-24-2017, 12:29 AM   #24
goodcar
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Default Re: Knocking after installing new flywheel

Quote:
Originally Posted by Tom Endy View Post
If the clutch surface on the flywheel has been resurfaced a number of times it puts the surface closer to the flywheel mounting bolts. If excessive the springs in the clutch disk could be contacting the heads of the bolts.

It is also prudent to have the pressure plate mounting surface on the flywheel machined at the same time the clutch surface is machined to restore the factory distance specification which is 1.123".

Another possibility: if you had the starter off and was reinstalled with incorrect bolts (too long), the flywheel will contact them.

When you push the clutch in the flywheel can move forward slightly depending on the condition of the thrust washer on the crank.

Tom Endy
I had this problem also. Turned out the pressure plate adjusting bolts were striking the clutch spring flanges. This was caused by too much slop in the clutch pedal linkages. Got that fixed and also used the other style clutch disk that doesn't have the flanges around the springs.
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Old 10-24-2017, 03:32 PM   #25
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Default Re: Knocking after installing new flywheel

Steve at Bert's thinks the pressure plate adjusting bolt might be clipping the clutch housing. Sure enough, there is wear on one of the bolts. (see attached)

I'll grind them all down and try again. But if that ain't it, I'm drivin' it like I stole it!
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Old 10-24-2017, 03:37 PM   #26
Marshall V. Daut
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Default Re: Knocking after installing new flywheel

Hurray! Steve Becker comes through for us again!
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Old 10-25-2017, 08:56 PM   #27
goodcar
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Default Re: Knocking after installing new flywheel

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Hurray! Steve Becker comes through for us again!
Marshall
Yes he did. Same guy who suggested that my clutch linkages were too loose.
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Old 10-28-2017, 12:03 PM   #28
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Default Re: Knocking after installing new flywheel

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Steve at Bert's thinks the pressure plate adjusting bolt might be clipping the clutch housing. Sure enough, there is wear on one of the bolts.
Yep, that was it! One pressure plate adjustment bolt was nicking the clutch housing. I ground them all down, and no knock!

Thank you for all the great suggestions. I love this place!
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Old 10-28-2017, 12:39 PM   #29
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Default Re: Knocking after installing new flywheel

Glad it was found! Thanks for the update - you wouldnt belive how many times we help diagnose issues but never hear back what the fix actually was.
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