Harmonic Balancer Bolt
Thread Starter
|
Freshman User
Joined: Feb 2006
Posts: 27
Likes: 0
From: Bowling Green, Ky
Harmonic Balancer Bolt
Harmonic Balancer bolt is shearing bolts. This is in my sons mustang. 302 roller motor. Does anyone have an idea why this is happening. This is the second time this has happened. Last time the crank was replaced and a new balancer replaced.
Posting Guru
Joined: Sep 2005
Posts: 2,238
Likes: 0
From: Kiefer, Northeastern Okla
Are you sure you've got the correct balancer (weight)? Are you using ARP bolts? Also, do your pulleys line up? Some aftermarket balancers require pulley spacers on later model 5.0s.
Thread Starter
|
Freshman User
Joined: Feb 2006
Posts: 27
Likes: 0
From: Bowling Green, Ky
Yes it was toqued to factory spec. Yes the pullies do line up. No it is not an ARP bolt. He does torque it pretty hard he loves to drive the car hard. no telling how many times it has seen 5 grand plus.
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
That's strange, I used to turn my 289 over 7 grand and never had a bolt fail. I always used the stock Ford bolt. How is the key and keyway in both crank and balancer? There should no play and the balancer should be a slight press fit. Good luck with it.
Thread Starter
|
Freshman User
Joined: Feb 2006
Posts: 27
Likes: 0
From: Bowling Green, Ky
Trending Topics
Elder User
Joined: Jan 2004
Posts: 819
Likes: 0
From: Troy,NY
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Elder User
Joined: Jan 2004
Posts: 819
Likes: 0
From: Troy,NY
It sounds like something is out of alignment. How did you get the balancer on the crank? You didn't smack it on did you? If the balancer isn't seated all the way you can't get it torqued down properly.All the pulleys line up? Have you been putting blue threadlocker on the bolt? You could try putting a framing square around the pulleys to make sure they are aligned.