D1SC just pulled my keyed balancer off..help!
05-28-2007, 12:49 PM
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D1SC just pulled my keyed balancer off..help! Okay, here's what I have(or had) on my car:
D1SC 7.65 LT1 balancer
Keyed Professional products SFI Damper
Keyed crank hub/crank w/woodriff key installed.
3.4 pulley-making 11# boost on my car
Here's what happaned:
I dyno tuned my car and beat the crap out of it-no problems
Then, at the track, I blip the throttle to clean out the plugs and then my damn **** puled right off-crank bolt, balancer, ATI spacer/crank pulley, belts etc.
I don't understand how this happened as my ARP crank bolt pulled out, threads were good, but it was bent.
My balancer was split at the spot where it is keyed all the way through.
The key was in good condition.
The spacer/ATI crank pulley was still in tact as one peice like it is installed.
The crank is not bent, threads are still good.
I think the keyway on the damper split under the pressure, then it was spun off the crank-backing out the bolt, and then bending the bolt as it came off. The bolt did not break.
Anybody with a LT1 and some moderate boost have some advice? I used loctite everywhere, yet this still happened. What should I do next time??? I just lost 1,000 in parts and dont want this to happen again. please help or offer your .02!!! Thanks!!
D1SC 7.65 LT1 balancer
Keyed Professional products SFI Damper
Keyed crank hub/crank w/woodriff key installed.
3.4 pulley-making 11# boost on my car
Here's what happaned:
I dyno tuned my car and beat the crap out of it-no problems
Then, at the track, I blip the throttle to clean out the plugs and then my damn **** puled right off-crank bolt, balancer, ATI spacer/crank pulley, belts etc.
I don't understand how this happened as my ARP crank bolt pulled out, threads were good, but it was bent.
My balancer was split at the spot where it is keyed all the way through.
The key was in good condition.
The spacer/ATI crank pulley was still in tact as one peice like it is installed.
The crank is not bent, threads are still good.
I think the keyway on the damper split under the pressure, then it was spun off the crank-backing out the bolt, and then bending the bolt as it came off. The bolt did not break.
Anybody with a LT1 and some moderate boost have some advice? I used loctite everywhere, yet this still happened. What should I do next time??? I just lost 1,000 in parts and dont want this to happen again. please help or offer your .02!!! Thanks!!
