Harmonic balancer slipped
Burning Brakes
Joined: Jan 2004
Posts: 1,043
Likes: 4
From: Va
There is only one that my friend who owns an engine shop will put on any serious motor and that is the ATI Super Damper 
I have this one on my 427 it is SFI 18.1 rated and is NHRA / IHRA and NasCar approved there is one almost the same but $90 cheaper in price ATI-917781, the only difference is steel outer shell as opposed to aluminum
http://www.summitracing.com/parts/ATI-917782/
You probably don't need this type for your engine, just showing you what is out there and available
I have this one on my 427 it is SFI 18.1 rated and is NHRA / IHRA and NasCar approved there is one almost the same but $90 cheaper in price ATI-917781, the only difference is steel outer shell as opposed to aluminum
http://www.summitracing.com/parts/ATI-917782/
You probably don't need this type for your engine, just showing you what is out there and available
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
http://www.summitracing.com/parts/FL...ET&prefilter=1
After market March under-drive aluminum pulleys.
After market Bosh aluminum water pump.
Aftermarket 120Amp alternator.
Last edited by pauldana; Aug 13, 2012 at 05:32 PM.
Race Director
Joined: Apr 2000
Posts: 17,654
Likes: 190
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Brand new Nascar engine from Roush/Yates
Hendrickmotorsports Nascar engine
If these guys put a $300 ATI Damper to balance a $60-80,000 engine there must be a reason
Like I said you probably don't need one then again you probably don't need a fliud damper either a $40 stock one is sufficient any brand but don't buy one from Chevy HotRod capitol of the world, Guangdong China
Hendrickmotorsports Nascar engine
If these guys put a $300 ATI Damper to balance a $60-80,000 engine there must be a reason
Like I said you probably don't need one then again you probably don't need a fliud damper either a $40 stock one is sufficient any brand but don't buy one from Chevy HotRod capitol of the world, Guangdong China
Last edited by MotorHead; Aug 13, 2012 at 07:42 PM.
Burning Brakes
Joined: Jan 2004
Posts: 1,043
Likes: 4
From: Va
Pauldana and MotorHead, thanks for the info. and pictures. Those NASCAR engines are impressive looking machines.
I was leaning towards the FLUIDAMPR because I recently installed one on my stock Dodge Cummins diesel with an automatic and have been quite pleased with it. The auto shifts smoother from take off all the way to OD. And at highway speeds the engine runs smoother. FLUIDAMPER claims to dampen out the harmonic vibrations thru-out the entire RPM range and it appears to be working on this big inline six diesel. So I was thinking the FLUIDAMPR might further reduce some of the vibrations in my 383 stroker with solid motor mounts. Presently, vibrations aren't bad at all but just thought it may help even more and plus I want to get that Professional Products damper off since I've heard bad things about those. Another benefit of the FLUIDAMPR is there is no inner elastomer rubber ring to worry about having to replace down the road after it ages and gets cracks in it.
Thanks again for your alls help.
I was leaning towards the FLUIDAMPR because I recently installed one on my stock Dodge Cummins diesel with an automatic and have been quite pleased with it. The auto shifts smoother from take off all the way to OD. And at highway speeds the engine runs smoother. FLUIDAMPER claims to dampen out the harmonic vibrations thru-out the entire RPM range and it appears to be working on this big inline six diesel. So I was thinking the FLUIDAMPR might further reduce some of the vibrations in my 383 stroker with solid motor mounts. Presently, vibrations aren't bad at all but just thought it may help even more and plus I want to get that Professional Products damper off since I've heard bad things about those. Another benefit of the FLUIDAMPR is there is no inner elastomer rubber ring to worry about having to replace down the road after it ages and gets cracks in it.
Thanks again for your alls help.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
THere is nothing wrong with a fuidampner
If you use the ATI you may have to hone to fit they go on a little tight.
Dont force it on youll never get it off. THey are a nice piece btw.
OP get rid of that balancer now!!
Had one explode on me years ago went right through the hood took out the radiator and everything on the front of the motor. Like a small hand grenade went off.
If you use the ATI you may have to hone to fit they go on a little tight.
Dont force it on youll never get it off. THey are a nice piece btw.
OP get rid of that balancer now!!
Had one explode on me years ago went right through the hood took out the radiator and everything on the front of the motor. Like a small hand grenade went off.
Cruising
Joined: Jun 2010
Posts: 11
Likes: 0
Harmonic balancer
