ARP / MMR Harmonic Balancer Bolt & Support Washer Kit

This NEW kit from MMR was developed to support the crankshaft and Harmonic balancer on all 5.0 Coyote applications. This kit helps prevent crankshaft snout failure on supercharged applications that place additional load on the crankshaft and harmonic balancer. Special aerospace hardened, ultra thick washer actually engages the harmonic balancer providing increased support, also helps prevent bolt loosening common with the STD ARP bolt kit. Recommended for all na, Turbo and supercharged applications. Includes ARP 200,000 PSI Tensile Strength bolt.

Purchase now: http://www.modularmotorsportsracing...e=product_info&cPath=4_30_32&products_id=1011



Fits all 2011-2017 Coyote 5.0 Engines with factory and Aftermarket Balancers

Do you sell just the washer? And is the bolt the same length as the standard ARP kit?

I have already purchased (haven't used) my ARP crank bolt yet and would be interested in just the washer. Also I am sure you will sell a lot of washer only kits to all those guys already running an ARP bolt and standard washer.

Is this designed for the stock damper or aftermarket?

Not sure I understand how this can prevent crank snout failures. please explain. How about OPG failures? Any help with that?

John

Pretty sure this is the balancer bolt that must be replaced if the OEM one is removed, since it's "torque to yield". Correct me if I'm wrong.

blaket0w said:

Pretty sure this is the balancer bolt that must be replaced if the OEM one is removed, since it's "torque to yield". Correct me if I'm wrong.

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If it's torque to yield it must be replaced... I don't think, however, that aftermarket ARP balancer bolts would be torque to yield...

John

I am also interested in a washer only kit. Mine has been installed for about 8 months now and I don't need another ARP crank bolt.

this is nice! I would imagine that it's the same size bolt as it appears that it sits inside that washer. This would/will effectively extend the load surface of the end of the crankshaft, instead of having a "free air" portion. whether it changes anything, not sure, but sure looks like it makes sense.

Crackerjack17 said:

this is nice! I would imagine that it's the same size bolt as it appears that it sits inside that washer. This would/will effectively extend the load surface of the end of the crankshaft, instead of having a "free air" portion. whether it changes anything, not sure, but sure looks like it makes sense.

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Correct!

In regards to the washer, they are not available alone and are not compatible with the ARP bolt. They are designed to work as a kit, each part locating on the next (bolt locates inside of washer, washer locates inside of balancer.

Fits all Balancers

I bought this bolt and when we went to install it, apparently the bolt isn't long enough to fit properly.

I have the Stage 2 Procharger kit with a stock balancer. I'm currently using the balancer bolt that came with the MMR OPG/CG kit you sell on eBay.

Any insight?

blaket0w said:

I bought this bolt and when we went to install it, apparently the bolt isn't long enough to fit properly.

I have the Stage 2 Procharger kit with a stock balancer. I'm currently using the balancer bolt that came with the MMR OPG/CG kit you sell on eBay.

Any insight?

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Why didnt you use the bolt procharger supplies in the kit?

Is this available with a 12 point bolt?

Slamdcoop0428 said:

Why didnt you use the bolt procharger supplies in the kit?

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My kit is used so I didn't have one. The bolt that came with the MMR OPG/CS kit seems fine and has been for a few thousand miles.

blaket0w said:

My kit is used so I didn't have one. The bolt that came with the MMR kit seems fine and has been for a few thousand miles.

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That bolt is designed to be longer to help pull the balancer on since a factory bolt is too short and can strip the crank threads. I have that same MMR bolt and with the balancer all the way on the MMR bokt was too long and bottomed out in the crank.

But you having the stage 2 procharger with the added 8 rib is why you can probably use it.