Possible dampener failure settling in...... :eek:
Underdrive pully Bouncing??? Weird?
Thread Starter
Drifting
Joined: Feb 2002
Posts: 1,937
Likes: 2
From: Arvada CO
Underdrive pully Bouncing??? Weird?
Ok....i am at lunch today and i looking at my charger and tensioner and i notice my tensioner bouncing?? so i look deeper and see my bottom underdrive pulley (crank) bouncing or it looks like it is loose? so i reached down and pulled on it up and down and it seemed solid but it is hard to tell? But what could cause this besides it being loose? is it possible to have the crank bounce??? i am not familiar with building a small block?
Melting Slicks
Joined: May 2000
Posts: 2,148
Likes: 1
From: Chandler AZ
Re: Underdrive pully Bouncing??? Weird? (krivera)
Tensioner bouncing around a little is normal. So is your crank pulley going up and down at regular intervals, like the pulley is bent or not fully seated on the dampener. Can you see the crank bolt in the center and tell if it's moving? Is the dampener moving around too? Does the engine seem at all unbalanced?
Also- how rough is your idle? it's not just the whole motor moving in the mounts is it?
Also- how rough is your idle? it's not just the whole motor moving in the mounts is it?
Le Mans Master
Joined: Oct 1999
Posts: 6,366
Likes: 34
Re: Underdrive pully Bouncing??? Weird? (krivera)
You have an underdrive pulley on your main crank with a supercharger?
I would have to go with the pulley is not seated all the way as well, or it is bent as well.
I would have to go with the pulley is not seated all the way as well, or it is bent as well.
Thread Starter
Drifting
Joined: Feb 2002
Posts: 1,937
Likes: 2
From: Arvada CO
Re: Underdrive pully Bouncing??? Weird? (bill mcdonald)
well i dont have a smaller pulley on the crank it is the stock one...But it reminds me of lets say a lose pulley or something? But when i look at the timing meter (when setting the timine at TDC) the balancer seems to say to spin fine (no bouncing) but the pulley bolted to that seems it moves up and down? but i thought i would get your guy opinion:D thank let me know if you guys think of something else and i will take that pulley off this weekend and check it!
Le Mans Master
Joined: Oct 1999
Posts: 6,366
Likes: 34
Re: Underdrive pully Bouncing??? Weird? (krivera)
I think it is bent. I wonder if the blower could of yanked on it? or if someone else did something to it....
Does it look like it rolls in towards the motor, then out towards the radiator?
Does it look like it rolls in towards the motor, then out towards the radiator?
Melting Slicks
Joined: May 2000
Posts: 2,148
Likes: 1
From: Chandler AZ
Re: Underdrive pully Bouncing??? Weird? (krivera)
the balancer seems to say to spin fine (no bouncing) but the pulley bolted to that seems it moves up and down?
Thread Starter
Drifting
Joined: Feb 2002
Posts: 1,937
Likes: 2
From: Arvada CO
Re: Underdrive pully Bouncing??? Weird? (gcrouse)
Hey at least your balancer, crank snout, and forward main bearings are ok!
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