Did I Damage My Engine ??
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From: Ft.Worth, Texas
Did I Damage My Engine ??
I may have made a bonehead move. Im hoping someone here can tell me if I may have damaged something. In a further attempt to quieten my noisy valve train, I was seeing how far I could go with my push rod adjustment in setting the lifter preload. A few people suggested going as far as .140"-.150" for pre-load. As I was adjusting the push rods, I decided to see just how much travel the piston inside the lifter had by trying to count the turns to bottom. I got to 10 turns and decided that didnt seem right so, I backed the push rod back out all the way, waited a little while, and set the preload at 2.6 turns. The valve train sounds OK as far I can tell but now, I have what I would describe as a knock coming from my mufflers when I accelerate. I would describe the sound as that of a wood block (musical instrument) type sound. It is intermittent. Also, my engine does not accelerate as smoothly as it did before I started messing with it. Is it possible that the valve made contact with the piston when I cranked down on the lifter? I never felt anything but, now I wondering if I damaged something.
Last edited by 89FLHTC; Apr 27, 2016 at 10:15 AM.
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From: Ft.Worth, Texas
Compression is 100 psi on both cylinders. I checked it with 2 different gauges. The manual calls for 90 psi so, I guess it's ok. I'm only putting out 65 hp. The noise seems to be better. I may need louder pipes!
Last edited by 89FLHTC; Apr 27, 2016 at 05:52 PM.
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From: Ft.Worth, Texas
I stand corrected . It was .140" that I was told. You can look it up yourself in my other thread. That seems to be a popular thought in other threads related to pre-load too. It probably works for different lifters/cams, etc. It didnt work on my engine.
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Joined: Oct 2015
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From: Ft.Worth, Texas
I checked it cold and then again after I had ran it awhile and let it sit for about an hour. The results were the same. I then found the procedure in the manual that said to check it hot with the throttle wide open. I didnt check it that way.
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