Re: Valve train noise 1932 901
Posted by 32model901 On 2017/12/31 12:55:26
EGGE still lists the pin and roller.
I replaced the pins on mine, they had about .03-.06 wear. The fully hardened roller on mine had a thin brass sleeve between the roller ID and pin.
Don't know if this was original or a past attempt at a fix. I had the ID bore of the EGGE rollers opened up and pressed in some Torrignton needle bearings. The EGGE pins were also hardened and had a finish / hardness acceptable for the needle bearings.
Wear of the roller or pin is going to decrease total valve lift, but I didn't have any noise from the worn ones.
Any addition info on the knock would help diagnose the problem.
1. Does it occur in sync and increase with engine speed or less than engine speed?
2. With the engine running short out a plug at a time and see if there is a change. A hard knock could be cylinder related (wrist pin knock, rod knock, piston slap).
3. Pull the timing chain inspection cover, with the engine idling shine a light inside and watch the chain / generator gear. There is a spring in the timing cover that is supposed to apply a load to the generator gear to eliminate end play. If the spring is broken / missing the gear would be shifting back and forth.
4. If you have the rocker assembly removed gently apply some force on the camshaft to check to see if it has excessive axial play.
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I replaced the pins on mine, they had about .03-.06 wear. The fully hardened roller on mine had a thin brass sleeve between the roller ID and pin.
Don't know if this was original or a past attempt at a fix. I had the ID bore of the EGGE rollers opened up and pressed in some Torrignton needle bearings. The EGGE pins were also hardened and had a finish / hardness acceptable for the needle bearings.
Wear of the roller or pin is going to decrease total valve lift, but I didn't have any noise from the worn ones.
Any addition info on the knock would help diagnose the problem.
1. Does it occur in sync and increase with engine speed or less than engine speed?
2. With the engine running short out a plug at a time and see if there is a change. A hard knock could be cylinder related (wrist pin knock, rod knock, piston slap).
3. Pull the timing chain inspection cover, with the engine idling shine a light inside and watch the chain / generator gear. There is a spring in the timing cover that is supposed to apply a load to the generator gear to eliminate end play. If the spring is broken / missing the gear would be shifting back and forth.
4. If you have the rocker assembly removed gently apply some force on the camshaft to check to see if it has excessive axial play.
Attach file:
(56.41 KB)
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