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Re: 70 340 Harmonic Balancer Slipped [Re: RapidRobert] #2756886
03/28/20 02:20 PM
03/28/20 02:20 PM
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Indiana
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YO7_A66 Offline OP
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You may be right Robert. I was having trouble with my piston stop staying snug before I swapped this out, but I did not think that the mark would have been off by over an inch just because the stop was not staying snug.

I now have the new balancer on and the engine at TDC of #1 piston, the dist is pointing at the front, drivers side bolt like it should, #1 valves closed and the new balancer 0 is right in line with the stock 0 mark.
I am going to try that piston stop again and try to get it tighter in the hole.

Thanks Robert.

Torquing Balancer Bolt: I ended up making a bracket that bolts to the harmonic balancer and sets on top of the K frame to keep the crank from rotating while tightening the balancer bolt to the 135 ft/lbs. I can also use this same setup to loosen the bolt too in the future.

Thanks again to everyone.
Dave

Last edited by YO7_A66; 03/28/20 02:23 PM.

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: 70 340 Harmonic Balancer Slipped [Re: YO7_A66] #2756894
03/28/20 02:27 PM
03/28/20 02:27 PM
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Florida
BDW Offline
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How about a pic of that bracket you made.

Re: 70 340 Harmonic Balancer Slipped [Re: BDW] #2756937
03/28/20 04:27 PM
03/28/20 04:27 PM
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Sniper Offline
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All you need to loosen a balancer bolt is the right sized socket, a breaker bar and the starter.

Make sure you disable the ignition circuit, you do not want it to start up on you.


Re: 70 340 Harmonic Balancer Slipped [Re: BDW] #2756959
03/28/20 05:48 PM
03/28/20 05:48 PM
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YO7_A66 Offline OP
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""How about a pic of that bracket you made.""

You may not be able to see them but there are spacers behind the aluminum bracket to fill the void in the new balancer. I just made it from material that I had laying around.


IMG_6307.JPGIMG_6310.JPG
Last edited by YO7_A66; 03/29/20 08:47 AM.

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: 70 340 Harmonic Balancer Slipped [Re: YO7_A66] #2757116
03/29/20 08:43 AM
03/29/20 08:43 AM
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YO7_A66 Offline OP
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This is the tool that I used on my OE balancer a few times over the years. The bolt just goes into the rectangular hole and can be used to tighten or loosen the balancer bolt depending on what side it was moved too. But this one would not work on the new style balancer, so I just used the tapped holes as shown in the previous reply.

Dave

DampTool-1.jpgDampTool-2.jpg

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: 70 340 Harmonic Balancer Slipped [Re: YO7_A66] #2758365
04/01/20 11:52 AM
04/01/20 11:52 AM
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Lincoln Nebraska
RapidRobert Offline
Circle Track
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Lincoln Nebraska
Quote
and the new balancer 0 is right in line with the stock 0 mark.
Just out of curiosity you might hold the old balancer up to the new one on the engine & clock the keyway slits the same & see if the TDC marks are the same. 10 degree off should be apparent


live every 24 hour block of time like it's your last day on earth
Re: 70 340 Harmonic Balancer Slipped [Re: RapidRobert] #2758372
04/01/20 12:09 PM
04/01/20 12:09 PM
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Indiana
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YO7_A66 Offline OP
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Robert.
I had them side by side on the bench before I installed the new one and they were very close.

Thanks
Dave


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
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