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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: ricsess on May 18, 2014, 08:36:56 pm

Title: harmonic damper
Post by: ricsess on May 18, 2014, 08:36:56 pm
  having a problem   my drive belts  do not line up with my damper
    i bought  the truck  about a year ago   have had to replace the belts twice  noticed the belts was a little out  of line  looking around i notice the damper  was beat up pretty bad   looked like somebody beat  it on with a hammer so figured  i would change it bought a power force damper  used a install tool    still the same problem    damper seems to be all the way in    how do you tell when its in all the way  dosn't seem like the alt  water pump pulley  power steering pulley could all be off   any help is apreciated
Title: Re: harmonic damper
Post by: thefarmboy21 on May 18, 2014, 08:53:30 pm
My guess is wrong/ba pulley on the balancer, or it's not mounted correctly. Nothing goes between the pulley and balancer. Unless it's the wrong damper, the only thing that could be fouling you would be a messed up "woodruff key" in the crank. I've never had any not go all the way in....I've even had to pull them back forwards a touch to line up everything. So I'd find another drive pulley.
Title: Re: harmonic damper
Post by: ricsess on May 18, 2014, 09:13:11 pm
thanks  i will try a different pulley    was just thinking about key wished i had changed it i will keep trying to figure it out  will let you know if i figure it out just thought i would put it out there and somebody could put me in the right direction
Title: Re: harmonic damper
Post by: LeftysRodandCustom on May 19, 2014, 02:06:25 am
Could it be possible that you've got the wrong crank pulley for the water pump setup? As there were two lengths of water pump, and I wouldnt put it past a guy that would put a balancer on with a hammer to have used the wrong pulley also. Is the crank pulley out of alignment by short or long?
Title: Re: harmonic damper
Post by: ricsess on May 19, 2014, 05:41:20 pm
i have the long water pump    alt  water pump  power steering  all line up  crank pulley  needs to go in about  two inches   i am thinking  either wrong  or defective  crank pulley
Title: Re: harmonic damper
Post by: thefarmboy21 on May 20, 2014, 11:23:57 am
If you're off by two whole inches then it's the wrong pulley....that or something is seriously jacked up! Sounds like he has a late 80's serpentine drive pulley and you need a mid 90's that only used one serpentine belt to drive ALL of the accessories?
Title: Re: harmonic damper
Post by: bd on May 20, 2014, 03:49:43 pm
Can you post a couple of pics?
Title: Re: harmonic damper
Post by: ricsess on May 20, 2014, 07:44:54 pm
will try to take  pic  tomorrow    day off from  work  tomorrow  so might figure it out   
  forgot to say  what year truck   its a 76  gmc   with a  350 engine  so  no serpentine
  hope  to figure it out tomorrow  if i dont  will post  picture   and more information

  thanks  for all the help
Title: Re: harmonic damper
Post by: thefarmboy21 on May 21, 2014, 01:59:17 pm
I don't see how it would be possible to get a V-belt pulley off of any SBC and be two whole inches off. Yes pics would be great!
Title: Re: harmonic damper
Post by: LeftysRodandCustom on May 23, 2014, 01:05:10 am
I think the long water pump came out in 73 so yours should be as you've said as long as nobody changed it over the years. The pulley almost surely has to be wrong. The balancer barely installs over 2 inches deep so I cant see how you could need that much more. Or maybe the balancer is wrong? When you installed it did you heat it first? I have a 4 lb one on mine and it absolutely wouldnt seat without both heating it in my oven and using the installer tool.
Title: Re: harmonic damper
Post by: ricsess on May 23, 2014, 06:34:06 pm
  i  got it finally    it was the crank pulley    the pulley was to long   think it was a defective pulley  chrome pulley made in china   sure look good  but now in junk pile where it belongs
  thanks for all the help i got from   everyone
Title: Re: harmonic damper
Post by: rich weyand on May 23, 2014, 07:53:30 pm
Excellent.  Thanks for the follow-up.
Title: Re: harmonic damper
Post by: Dan75k20 on May 24, 2014, 05:21:15 pm
I would have been frustrated with that problem