Author Topic: harmonic balancer wobble!  (Read 2328 times)

0 Members and 1 Guest are viewing this topic.

Offline ta78w72

  • Lifetime Member
  • *****
  • Posts: 6189
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #15 on: May 29, 2011, 12:35:24 PM »
all i am seeing is a repair sleeve..   whats that all about?   oh I can see this will be fun! Maybe this is the excuse i needed to find a pontiac 400!   LOL

The repair sleeves are used to stop oil seeping out.  The balancer wears and the sleeve compensates.  I'd replace the balancer rather than use a sleeve.  But in your case, you must replace the balancer.  I wouldn't drive the car as it is now.

Offline TeamPontiac88

  • Member
  • **
  • Posts: 197
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #16 on: May 29, 2011, 02:39:53 PM »
Thanks guys! I have not had one of these cars in many many years so I didnt know where to look! I appreciate all the help!

Offline ih8z28s

  • Member
  • **
  • Posts: 317
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #17 on: May 29, 2011, 10:03:04 PM »
This is what will happen when a balancer goes, my buddy was driving down the highway when it went, not pretty! broke the crank and snapped the cam.

Black, 1977 Trans Am - 455, 4spd(sold)

Black, 1979 Trans Am - 403, auto

Blue, 1980 Trans Am - 400, auto

Offline Tin Indians Rule

  • Tech Staff
  • Lifetime Member
  • *****
  • Posts: 3724
  • Referrals: 1
    • http://home.comcast.net/~rwhitejr/wsb/html/view.cgi-home.html-.html
Re: harmonic balancer wobble!
« Reply #18 on: May 29, 2011, 10:09:19 PM »
Dude, U gotta post warnings before something this graphic. OUCH! Its like watching another guy get kicked test tickles!
What's she wearing now? Come on!
1976 Black 455 4 speed (current project)
1976 White 400 Auto (original)
F-body stuff stashed everywhere.
Always buying/selling/trading  just ask!

Offline turbota400

  • Adv. Member
  • ****
  • Posts: 2527
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #19 on: May 29, 2011, 11:10:52 PM »
There is another member on here that posted some pretty graphic pics of a catastrophic failure in his '75 TA when the hub of his balancer fell apart and wiped out everything.
Shawn
1972 Chevy C-10
1980 Trans Am Pace Car - 428 ci Poncho in the works
1992 S-10 2WD- Work Bomber/Gas saver
1997 Chevy X-cab 4x4 - Vortec 350

Offline 78w72

  • Sr. Member
  • ***
  • Posts: 1390
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #20 on: May 29, 2011, 11:20:49 PM »
gm part# 88960256 is what you need.  gm parts direct has one for $32!

http://www.gmpartsdirect.com/
78 w72 ws6 4 speed
81 turbo pace car
lots of other past t/a's

Offline ta78w72

  • Lifetime Member
  • *****
  • Posts: 6189
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #21 on: May 30, 2011, 08:38:40 AM »
I may have that one on the shelf.  If it's the same as the 400 balancer, that particular one is made in India but it does appear better made than the original.  But, my original has been on the car since it left the factory and the one on the shelf has never been installed. 

Offline limey

  • Sr. Member
  • ***
  • Posts: 671
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #22 on: May 30, 2011, 11:07:52 AM »
Look at the keyway on the balancer. Mine had a hairline crack in it, glad I caught it!
79 Heritage Brown, 400 4spd, #'s matching. 1 of 2917.

Offline ta78w72

  • Lifetime Member
  • *****
  • Posts: 6189
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #23 on: May 30, 2011, 11:42:04 AM »
There is another member on here that posted some pretty graphic pics of a catastrophic failure in his '75 TA when the hub of his balancer fell apart and wiped out everything.

That was Rick.  But I always wondered how he knew the balancer was the real culprit.  That engine virtually exploded.

Offline screaminchickin

  • Jr. Member
  • *
  • Posts: 81
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #24 on: May 30, 2011, 04:42:43 PM »
Before you get a balancer puller check to see if you can pull it off by hand.A lot of them will just slide off once the bolts out.

Offline TeamPontiac88

  • Member
  • **
  • Posts: 197
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #25 on: May 30, 2011, 06:37:26 PM »
thanks guys! Im just a little confused as to whats the correct balancer. I read different things about the 301. some sites say its 301 specific, some say no.  arghhhhhhh

Offline Tin Indians Rule

  • Tech Staff
  • Lifetime Member
  • *****
  • Posts: 3724
  • Referrals: 1
    • http://home.comcast.net/~rwhitejr/wsb/html/view.cgi-home.html-.html
Re: harmonic balancer wobble!
« Reply #26 on: May 30, 2011, 07:49:17 PM »
What I've found and remember is that 301 Turbo is the oddball. But of course you can check it out for yourself.
What's she wearing now? Come on!
1976 Black 455 4 speed (current project)
1976 White 400 Auto (original)
F-body stuff stashed everywhere.
Always buying/selling/trading  just ask!

Offline 78w72

  • Sr. Member
  • ***
  • Posts: 1390
  • Referrals: 0
Re: harmonic balancer wobble!
« Reply #27 on: May 30, 2011, 08:55:17 PM »
thanks guys! Im just a little confused as to whats the correct balancer. I read different things about the 301. some sites say its 301 specific, some say no.  arghhhhhhh

good thing i caught this,  i didnt read your first post close enough.  the balancer i put the link to is NOT for your 301.  those are not available new or repro as far as i know. the 301 is externally balanced & has a specific balanced damper & flywheel.  all other pontiacs are internal balance & use the same basic balancer for most years.

sorry for not catching you had a 301.  dont ask how i found out they are different!   ;)
78 w72 ws6 4 speed
81 turbo pace car
lots of other past t/a's

Offline Tin Indians Rule

  • Tech Staff
  • Lifetime Member
  • *****
  • Posts: 3724
  • Referrals: 1
    • http://home.comcast.net/~rwhitejr/wsb/html/view.cgi-home.html-.html
Re: harmonic balancer wobble!
« Reply #28 on: May 30, 2011, 09:37:41 PM »
78w72, what source did you use for that info. Specifically the part that the 301 is externally balanced? Did the source specifically say NON TURBO 301 is externally balanced? Thanks I need to verify my research and sounds you you have a good lead on it so I'll just quote your source!
« Last Edit: May 31, 2011, 12:19:50 AM by Tin Indians Rule »
What's she wearing now? Come on!
1976 Black 455 4 speed (current project)
1976 White 400 Auto (original)
F-body stuff stashed everywhere.
Always buying/selling/trading  just ask!

Offline Tin Indians Rule

  • Tech Staff
  • Lifetime Member
  • *****
  • Posts: 3724
  • Referrals: 1
    • http://home.comcast.net/~rwhitejr/wsb/html/view.cgi-home.html-.html
Re: harmonic balancer wobble!
« Reply #29 on: May 31, 2011, 12:36:33 AM »
I found an article (if you wanna call it that) on Wikipedia that does list the 301 as externally balanced so now I'm going nuts to validate. Anyone else have a good source to confirm this?
What's she wearing now? Come on!
1976 Black 455 4 speed (current project)
1976 White 400 Auto (original)
F-body stuff stashed everywhere.
Always buying/selling/trading  just ask!