Harmonic Damper??

Old 04-13-2009, 06:48 PM
  #1  
whitey70ss
Senior Member
MASTER BUILDER
Thread Starter
 
Join Date: Apr 2009
Posts: 175
Default Harmonic Damper??

I was wondering if the size of the damper matters on a sbc ?? I see there is about 4 different sizes listed.
whitey70ss is offline  
Old 04-13-2009, 06:54 PM
  #2  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default

I think most people i know run the 6 1/4" one i know i have two for nutural balance, but the one i have that's external balance is bigger.

JMO

Zip.
zipper06 is offline  
Old 04-13-2009, 07:03 PM
  #3  
whitey70ss
Senior Member
MASTER BUILDER
Thread Starter
 
Join Date: Apr 2009
Posts: 175
Default

Is there any certain size I should run on my mild sbc that will be street driven?? :?:
whitey70ss is offline  
Old 04-13-2009, 10:23 PM
  #4  
dparker
Senior Member
RACING JUNKIE
 
Join Date: Jun 2003
Location: Hobbs, NM
Posts: 842
Default

Any size but get a ATI or Fluidampner. They take alot of viberation out of your engine. Warren Johnson years ago said his bearings were shot after just one race. But after going to Fluidampner his bearings still looked liked new. I've been running a good balancer ever since, a very good investment for the money.
dparker is offline  
Old 04-14-2009, 12:30 AM
  #5  
cepx111
Senior Member
RACING JUNKIE
 
Join Date: May 2006
Posts: 2,044
Default

I've always heard to run the biggest one you can fit.
Persoanlly I've never run anything but stock OEM style dampners.
My current motor (496BBC) is internally balanced so it's a neutral balancer ( no counter weight) and its the big one, 8 inches I think > Cp
cepx111 is offline  
Old 04-14-2009, 12:37 AM
  #6  
cepx111
Senior Member
RACING JUNKIE
 
Join Date: May 2006
Posts: 2,044
Default

[quote="dparker"]Any size but get a ATI or Fluidampner. They take alot of viberation out of your engine. Warren Johnson years ago said his bearings were shot after just one race. But after going to Fluidampner his bearings still looked liked new.

JMO> it almost sounds like an ad.

I bet when he said that he had a big ole fluidampner sticker on his car somewhere.

Don't get me wrong I'm not saying it is not a good idea to run one.

cepx111 is offline  
Old 04-14-2009, 07:23 AM
  #7  
dparker
Senior Member
RACING JUNKIE
 
Join Date: Jun 2003
Location: Hobbs, NM
Posts: 842
Default

I would never run a stock OEM balancer on an engine I plan on taking over 6500 RPM. There a reason why they're not legal at a NHRA track on cars going 9.90 or quicker. Everyone has they're own opinion and thats mine. Go to any big race and see how many stock OEM balancers you see.
dparker is offline  
Old 04-14-2009, 08:19 AM
  #8  
cepx111
Senior Member
RACING JUNKIE
 
Join Date: May 2006
Posts: 2,044
Default

I run at a old country backwoods track in Mississippi, NHRA rules don't apply round here, nor do we tech! :shock: it's truley a run what you brung track.
I take my OEM Jegs' brand style dampner (new from jegs last year) to almost 8K every pass.

Again.....
I'm not saying it's not a good idea to run a fluidampner or ATI, I just don't have one and I've personally never had any problems using them, and yeah there's pleny of guys at the track that use OEM type dampners too.
But we're just a bunch rednecks who'll run anything..lol
later, Cp
cepx111 is offline  
Old 04-14-2009, 01:24 PM
  #9  
whitey70ss
Senior Member
MASTER BUILDER
Thread Starter
 
Join Date: Apr 2009
Posts: 175
Default

thanks for all the info guys
whitey70ss is offline  
Old 04-15-2009, 10:44 AM
  #10  
oldandtired
Senior Member
RACING JUNKIE
 
oldandtired's Avatar
 
Join Date: Dec 2008
Location: Sugar Hill, GA
Posts: 1,370
Default

I've seen the outer ring of a stock balancer come thru a front fender and go under the spectator stands. Since then I chose to run SFI stuff.
oldandtired is offline  
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service