CRG Discussion Forum
Welcome, Guest. Please login or register.
Did you miss your activation email?
March 29, 2015, 02:42:16 PM

Login with username, password and session length
Search:     Advanced search
Welcome to the CRG Discussion Forum!
Forum registration problems: Make sure you enter your email correctly and you check your spam box first. *Then* email KurtS2@gmail for help.
111374 Posts in 12824 Topics by 4913 Members
Latest Member: devodave
* Home Help Search Login Register
+  CRG Discussion Forum
|-+  Camaro Research Group Discussion
| |-+  Originality
| | |-+  69 Z Harmonic Balancer or not ?
« previous next »
Pages: [1] Print
Author Topic: 69 Z Harmonic Balancer or not ?  (Read 422 times)
69 Zee
Member
***
Posts: 365



View Profile Email
« on: March 20, 2015, 04:47:06 PM »

Hey guys,  Looking for answers.  I have a chance to grab up this balancer for peanuts.  Basically the guy was gonna pitch it.  Said it was off a 69 Camaro engine, all he knew.  I also grabbed up a set of flawless #3932418 valve covers for $100.  So now this has me wondering.

The balancer has all the making of an original Z balancer except I can't find the 7708M stamp anywhere..notta  Huh   It's 8 inches in diameter and 1-3/4 wide, has the offset timing index mark to the keyway also.  Doesn't look like a repop either.. at least not like all the ones I've seen.

What is it or could it be to and is it worth anything ?  Huh

Thanks in advance for opinions
Logged

Darrell

69 Z/28 X77 Dusk Blue, White Top, all original parts & matching #'s
69 Camaro X11 Fathom Green w/green interior
bcmiller
CRG Member
*****
Posts: 499


View Profile
« Reply #1 on: March 20, 2015, 07:20:08 PM »

Does it have ANY numbers stamped on it?
Logged

1968 Camaro SS - now 468 BBC, M21, 12 bolt.
Looking for 68 Camaro with body number NOR 181016
Bryon
ZLP955
Hero Member
*****
Posts: 595



View Profile
« Reply #2 on: March 20, 2015, 07:37:29 PM »

Should have a casting number on the back (recessed) face.
Logged

Tim - 04A VN '69 z/28 69-69 715 ex-E/MP
1968 Z28
Member
***
Posts: 459


View Profile Email
« Reply #3 on: March 20, 2015, 08:29:42 PM »

Looks exactly like my 1968 Z28 original balancer.  The offset is exactly the same offset that my balancer has.  The 1969 balancer has a larger offset....see this link for a photo of the difference between the 1969 & 1968 balancer.

     http://www.camaros.org/forum/index.php?topic=356.0

My balancer has a date stamp on the front of the outer ring and a couple of letters on the back side of the inner hub...one of the letters is a "C" and the other letter I can't make out due to a hole drilled through it.
Logged

Jerry G.

Z28-1968-07C-Norwood
Ermine White, Red Std. Interior
2nd. Owner, 38,000 miles
69 Zee
Member
***
Posts: 365



View Profile Email
« Reply #4 on: March 20, 2015, 08:45:59 PM »

The only numbers I found were these on one of the the inside spokes.  I may be totally wrong but it appears that I'm seeing what looks like "F77 (threaded hole) part of a 0 and a 2.  I have found nothing more.  Again it looks to weathered to be a repro and I've never seen a repro look exactly like this.  Could it be from an early Vette ?

Thanks Jerry G... Yeah the timing mark does look like that of a 67/68.  Was there a stamped number on the front like the 69 (7708M) of any sort ?  and is this worth grabbing or are they pretty common.
Logged

Darrell

69 Z/28 X77 Dusk Blue, White Top, all original parts & matching #'s
69 Camaro X11 Fathom Green w/green interior
janobyte
Hero Member
*****
Posts: 864


1968 z/28

bajcer@msn.com
View Profile Email
« Reply #5 on: March 21, 2015, 04:54:11 AM »

0ff my 04D 68, Z.   IMO ,yes, worth picking up if priced right.
Logged
janobyte
Hero Member
*****
Posts: 864


1968 z/28

bajcer@msn.com
View Profile Email
« Reply #6 on: March 21, 2015, 01:00:07 PM »

like on suggested link, notice my timing mark in relation to bolt holes...inline like yours.   67/68....lot more 69's built, just sayin Wink


other applications ,couldn't tell you ,sure it's somewhere on the site.  KEEP in mind ,if you plan to buy/use it ,have it examined. Old worn balancers and high RPM's don't mix.
Logged
bcmiller
CRG Member
*****
Posts: 499


View Profile
« Reply #7 on: March 21, 2015, 01:56:49 PM »

I believe the 69 Z28s and the high performance 350s in the early 70s used similar balancers.  Often difficult to tell the difference between the two.
« Last Edit: March 21, 2015, 02:52:50 PM by bcmiller » Logged

1968 Camaro SS - now 468 BBC, M21, 12 bolt.
Looking for 68 Camaro with body number NOR 181016
Bryon
z28z11
Hero Member
*****
Posts: 692


View Profile
« Reply #8 on: March 22, 2015, 08:19:58 PM »

I know there is probably a disparity between NOS and production line parts (if nothing else, a time difference), but you can compare these two, a 7173 '68 and a 7708 '69. Both are 20-25 years old, and both are stamped in about the same location. I'd have to dig my original '69 out of the archives, but I don't remember a stamping on the face of the balancer.

Casting marks on the back are similar to the previous descriptions. Only the offset and the stamping (if they are) really set these apart.

I second the previous motion - buy it (especially if he's discarding). You can always have it rebuilt -

Regards,
Steve
Logged

1968 Z28 BRG/W
1969 Z28 X77 LeMans/W
1969 X66 L78 Cortez/BVT
1969 Z11 L48
L78 steve
Hero Member
*****
Posts: 531



View Profile Email
« Reply #9 on: March 23, 2015, 12:05:45 PM »

I believe the 69 Z28s and the high performance 350s in the early 70s used similar balancers.  Often difficult to tell the difference between the two.

They were not similar, The 69 Z was a one year only with the 3 spokes extending to the rubber 7708 number. The 70 SHP did not. like pic. above.
Logged

69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B
69 Zee
Member
***
Posts: 365



View Profile Email
« Reply #10 on: March 23, 2015, 03:45:53 PM »

Ok,  I see the difference now after I compared it to my 69 Z's balancer also.   So would it be safe to say this is a 68 Z's balancer ?  Did 68's have a number stamped on the front like the 69 (7708M) did or was it plain such as this one ?  Other than the degree index mark positioning it's a dead ringer to a 69.
Logged

Darrell

69 Z/28 X77 Dusk Blue, White Top, all original parts & matching #'s
69 Camaro X11 Fathom Green w/green interior
L78 steve
Hero Member
*****
Posts: 531



View Profile Email
« Reply #11 on: March 23, 2015, 04:38:43 PM »

The finned 327 Hi-po Dampener has the 3 long spokes also. What you have is most likely 67/68 302 if the timing mark is inline.
Logged

69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B
69 Zee
Member
***
Posts: 365



View Profile Email
« Reply #12 on: March 23, 2015, 06:05:50 PM »

The timing mark is off line counter clockwise from the keyway.  Just not as far off line as the 69.  For what I can grab it for I'm gonna take it anyway.   Grin
Logged

Darrell

69 Z/28 X77 Dusk Blue, White Top, all original parts & matching #'s
69 Camaro X11 Fathom Green w/green interior
JohnZ
CRG Member
*****
Posts: 4227


View Profile Email
« Reply #13 on: March 26, 2015, 02:31:28 PM »

<< The timing mark is off line counter clockwise from the keyway.  Just not as far off line as the 69.  For what I can grab it for I'm gonna take it anyway. >>

That inertia weight has slipped a little bit - the pre-'69 timing index line was originally aligned perfectly (within 1/4 of a degree) with the keyway and bolt hole; see note below from the upper left of the damper drawing.  Smiley
Logged

'69 Z/28
Fathom Green
CRG
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.596 seconds with 18 queries.