brokedowntalon7
10+ Year Contributor
- 65
- 1
- Dec 9, 2010
-
Saskatoon,
SK, Canada
I had just installed a fluidamper with the arp bolts onto my fresh motor. Upon installation i noticed that at recommended torque the pulley had a bit of play, so i applied an additional 5 ft/lbs. -That seemed to do the trick.
I went out a few times to capture some logs to dial in my Ve table, so i wasn't driving very hard at all when i was out Car never saw more than ~5 psi. During these drives Link would pick up knock between 2500 and 3500 rpm when i was barely on the throttle (a few episodes of 6 counts). I stepped out and heard a bit of a clacking. I was suspicious of the pulley so i drove home and parked her.
Today I went to put washers behind the pulley bolts because i figured that the new slightly longer arp bolts were bottoming out. This would explain why the spec torque did not hold the pulley on in the first place. Also explains some of the wear marks i saw on the bolts and also why the locating pin in the crank was almost vibrated out. (vibrations weren't perceivable to me)
I fired the engine up and the pulley clacking is gone, except now there is a slight tapping in what appears to be the bottom of my engine. I have heard rod knock before and this was less obvious.
Turned off the engine as fast as i could and drained the oil. I didn't find any obvious bearing pieces, but this is a new engine and I am not experienced enough to really tell.
My question is, could this kind of vibration cause bearing damage?
what would your next course of action be?
drop pan and check bearings? which are more likely to be damaged rod or crank bearings?
Help is greatly appreciated
-Matt
I went out a few times to capture some logs to dial in my Ve table, so i wasn't driving very hard at all when i was out Car never saw more than ~5 psi. During these drives Link would pick up knock between 2500 and 3500 rpm when i was barely on the throttle (a few episodes of 6 counts). I stepped out and heard a bit of a clacking. I was suspicious of the pulley so i drove home and parked her.
Today I went to put washers behind the pulley bolts because i figured that the new slightly longer arp bolts were bottoming out. This would explain why the spec torque did not hold the pulley on in the first place. Also explains some of the wear marks i saw on the bolts and also why the locating pin in the crank was almost vibrated out. (vibrations weren't perceivable to me)
I fired the engine up and the pulley clacking is gone, except now there is a slight tapping in what appears to be the bottom of my engine. I have heard rod knock before and this was less obvious.
Turned off the engine as fast as i could and drained the oil. I didn't find any obvious bearing pieces, but this is a new engine and I am not experienced enough to really tell.
My question is, could this kind of vibration cause bearing damage?
what would your next course of action be?
drop pan and check bearings? which are more likely to be damaged rod or crank bearings?
Help is greatly appreciated
-Matt
