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01-30-2016, 12:02 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 74
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Not Ranked
ARP Balancer Bolt?
In putting my new ARP square drive balancer bolt on I noticed it's a little too long over my existing bolt. If I use both washers on the bolt it will work. The threads are clean. Any suggestions?
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01-30-2016, 02:34 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,433
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Trim a 1/2" off the end of the bolt. Not a big deal.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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01-30-2016, 03:24 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Do you use Loctite on that bolt? And what torque?
I assume they are reusable.
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01-30-2016, 03:52 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,391
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No Loctite.....use ARP lube and torque to 135.
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www.lykinsmotorsports.com
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01-30-2016, 03:58 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,391
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BTW, I've never had to cut an ARP balancer bolt off. Are you sure you didn't buy one for a 351C?
All Ford's have a 5/8" balancer bolt, but the lengths are different between the Cleveland and other famililes.
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www.lykinsmotorsports.com
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01-30-2016, 04:18 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 74
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Not Ranked
The new Bolt is supposed to be correct ARP square drive 150-2503, 2.050 in. My existing original bolt is 1.75 in. So I guess I have to either cut the bolt down or use both washers. What say you?
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01-30-2016, 04:38 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,391
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Have you tried it yet without cutting it or are you just going off the overall length between the two?
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www.lykinsmotorsports.com
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01-30-2016, 04:44 PM
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Join Date: Apr 2006
Location: Charlottesville,
va
Cobra Make, Engine: Coombe, Shelby Block 496
Posts: 1,187
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If you are sure the bolt is to long, trimming won't hurt a thing.
I would not use a double washer, myself.
Last edited by cobrakiwi; 01-30-2016 at 04:47 PM..
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01-30-2016, 04:46 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 74
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Not Ranked
I've tried it and there is a gap with the new bolt compared to the existing bolt. I know it does not sound right and the balancer is flush up against the spacer.
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01-30-2016, 04:48 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,391
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You do what you gotta do then...
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www.lykinsmotorsports.com
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01-30-2016, 04:49 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 74
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Very nice parts you produce. Thanks for the reply.
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01-30-2016, 04:56 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 74
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Thanks, Tom
Last edited by talos; 01-30-2016 at 06:36 PM..
Reason: typo
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01-30-2016, 05:06 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
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I'd have to see a pic...
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www.lykinsmotorsports.com
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02-01-2016, 01:24 AM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,773
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Quote:
Originally Posted by talos
I've tried it and there is a gap with the new bolt compared to the existing bolt. I know it does not sound right and the balancer is flush up against the spacer.
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Curious as to whether the balancer you're using is the cause of your concern.
"the balancer is flush up against the spacer"
Does this mean assembled fully home?
Does your balancer have the same length as a stock balancer?
__________________
Gary
Gold Certified Holden Technician
Last edited by Gaz64; 02-01-2016 at 01:35 AM..
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02-01-2016, 04:04 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 74
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Not Ranked
Yes the assembly is fully home. The balancer is the same depth as the stock balancer. The threads are clear, clean, and the same depth.
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02-01-2016, 04:14 PM
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CC Member
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Join Date: Nov 2014
Location: Winter Garden,
Fl
Cobra Make, Engine: Everett Morrison/Side Oiler
Posts: 74
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Not Ranked
I just got off the phone with the ARP Tech. They have heard of this happening before with some cranks and said turning it down to the same size as oem bolt is not a problem. I should of just called them to begin with. Sorry for the forum usage.
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02-01-2016, 05:33 PM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,773
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Quote:
Originally Posted by talos
I just got off the phone with the ARP Tech. They have heard of this happening before with some cranks and said turning it down to the same size as oem bolt is not a problem. I should of just called them to begin with. Sorry for the forum usage.
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That's good news, and everybody has learnt something new today. 
__________________
Gary
Gold Certified Holden Technician
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