ATI spun off my keyed balancer..help!!!
Thread Starter
11 Second Club
iTrader: (11)
Joined: Apr 2005
Posts: 121
Likes: 0
From: In the garage
ATI spun off my keyed balancer..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!!
__________________
Lonnies Performance... This guy will send you out a ATI balancer (underdrive or not), a special ATI balancer hub (BBC o.d. to provide more material/more strength) with or without dual keyways, and a custom machined timing cover (it accepts a larger diameter seal for the larger diameter hub).
This is how mines set-up, And Im running 13+psi with the D1SC pulleyed to almost max out the blower.
I did get the dual keyed hub, but unfortunately my motor came with only one key in the crank. So I drilled and pinned the other side
This is how mines set-up, And Im running 13+psi with the D1SC pulleyed to almost max out the blower.
I did get the dual keyed hub, but unfortunately my motor came with only one key in the crank. So I drilled and pinned the other side
Originally Posted by Project GatTagO
Certainly sounds like you were let down by a fine, made in China, product. Pics.
Andrew
Andrew
With FI, nothing is cheap for a reason. Cheap parts simply wont hold up. Buy the more expensive stronger parts the first time, cause like it or not the cheaper part will fail eventually and you'll have to buy the more expensive one later. Costing you more money in the long run.
Trending Topics
Originally Posted by Fire67
Lonnies Performance... This guy will send you out a ATI balancer (underdrive or not), a special ATI balancer hub (BBC o.d. to provide more material/more strength) with or without dual keyways, and a custom machined timing cover (it accepts a larger diameter seal for the larger diameter hub).
This is how mines set-up, And Im running 13+psi with the D1SC pulleyed to almost max out the blower.
I did get the dual keyed hub, but unfortunately my motor came with only one key in the crank. So I drilled and pinned the other side
This is how mines set-up, And Im running 13+psi with the D1SC pulleyed to almost max out the blower.
I did get the dual keyed hub, but unfortunately my motor came with only one key in the crank. So I drilled and pinned the other side
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo Thread Starter
11 Second Club
iTrader: (11)
Joined: Apr 2005
Posts: 121
Likes: 0
From: In the garage
Originally Posted by Project GatTagO
Certainly sounds like you were let down by a fine, made in China, product. Pics.
Andrew
Andrew
I don't know how to post them in a thread to show up yet!
Speak of the devil and he shall show his face 
Welcome to the thread Lonnie
Andrew-
You are correct, I didnt read through the thread again to confirm the name. Im lazy when it comes to that.
Welcome to the thread Lonnie
Andrew-
You are correct, I didnt read through the thread again to confirm the name. Im lazy when it comes to that.
Last edited by Fire67; Jun 1, 2007 at 08:46 AM.
Fire67,
I believe we spoke before about a fuel system for your car.
Let me know if I can help with the balancer issue. I have done many of these LT1's & the big hub holds up well even with a single key.
I believe we spoke before about a fuel system for your car.
Let me know if I can help with the balancer issue. I have done many of these LT1's & the big hub holds up well even with a single key.
Yeah we spoke about the fuel system and you sold me my ATI balancer/hub combo and hooked me up with specs for having my Procharger pulley spacer machined down to work with the ATI balancer. Actually, I think my engine builder bought the timing cover from you after the one he machined let go of the seal.
BawlsZ28 needs the balancer/hub combo. And probably should just get the cover as well. Other than the spacer, its a bolt on deal from there on out.
BawlsZ28 needs the balancer/hub combo. And probably should just get the cover as well. Other than the spacer, its a bolt on deal from there on out.
