1969 Barracuda 340 Formula S Restoration
I sent my harmonic balancer off to Damper Doctor DamperDoctor to get restored because I did not like the look of the rubber. This is what they say they do: All rebuilt harmonic balancers are first disassembled and cleaned. The parts are then inspected for defects, including stripped bolt holes and worn or cracked keyways and hubs. Harmonic balancers are then prepared for assembly. Timing marks are set to the factory specification by using a laser aligning process. After the timing marks are set, the harmonic balancers are then injected with a high-temperature, high-strength silicone rubber that is then platinum cured for a extremely strong hold. The new silicone rubber is capable of withstanding temperature in excess of 450 degrees, and will hold up against pressures as high as 770 psi.
Note the bolded text.
I had previously match marked my damper so I could watch it to make sure the outer ring was not starting to rotate (first photo) When I got it back, the match marks looked like this!!! (second photo)
This is the reply I got from them : OOPS SEND BACK HE TIMED IT WRONG
Was not impressed to say the least!!! It is a real pain to send parts back and forth across the border, so I'll just cut a new TDC mark when I degree the cam.
Sure makes me wonder about their overall quality control process. Be warned.
Jim
I sent my harmonic balancer off to Damper Doctor DamperDoctor to get restored because I did not like the look of the rubber. This is what they say they do: All rebuilt harmonic balancers are first disassembled and cleaned. The parts are then inspected for defects, including stripped bolt holes and worn or cracked keyways and hubs. Harmonic balancers are then prepared for assembly. Timing marks are set to the factory specification by using a laser aligning process. After the timing marks are set, the harmonic balancers are then injected with a high-temperature, high-strength silicone rubber that is then platinum cured for a extremely strong hold. The new silicone rubber is capable of withstanding temperature in excess of 450 degrees, and will hold up against pressures as high as 770 psi.
Note the bolded text.
I had previously match marked my damper so I could watch it to make sure the outer ring was not starting to rotate (first photo) When I got it back, the match marks looked like this!!! (second photo)
This is the reply I got from them : OOPS SEND BACK HE TIMED IT WRONG
Was not impressed to say the least!!! It is a real pain to send parts back and forth across the border, so I'll just cut a new TDC mark when I degree the cam.
Sure makes me wonder about their overall quality control process. Be warned.
Jim