ARP flexplate to converter bolt torque???
#1333190
11/10/12 11:33 AM
11/10/12 11:33 AM
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Joined: Jan 2003
Posts: 1,797 Windsor, ON, Canada
Diplomat360
OP
top fuel
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OP
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Joined: Jan 2003
Posts: 1,797
Windsor, ON, Canada
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LOL...why does something as simple as this have to be so 'difficult'???
OK, so here is the deal.
I've got the ARP 240-7301 bolts, that's the 5/16"-24 flexplate to converter bolt kit. The ARP site does NOT show installation instructions for this specific kit, however, the catalog does claim these are the 200K psi tensile strength bolts. Therefore, per the generic ARP recommendations, it sounds like these bolts should have an assembly torque of 28-32 ft-lbs. And this is where my difficulty stems from.
The stock Mopar assembly torque is 270 in-lbs, that is only about 22.7 ft-lbs. In my project car I have an aftermarket torque converter which is mated up to a B&M flexplate, so these are no longer stock components.
My question to you guys: what is the correct assembly torque I should be using with these bolts? Is the use of Loctite recommended as well? If so, what kind (blue or red)? I'm thinking of tossing the BLUE Loctite on there just to be safe...
Thanks!
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Re: ARP flexplate to converter bolt torque???
[Re: Cab_Burge]
#1333192
11/11/12 10:18 AM
11/11/12 10:18 AM
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Joined: Jan 2003
Posts: 1,797 Windsor, ON, Canada
Diplomat360
OP
top fuel
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OP
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Joined: Jan 2003
Posts: 1,797
Windsor, ON, Canada
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Quote:
Torque them to 23 to 25 Ft lbs,276 to 300 inch lbs and use the blue locktite
...ummm....even though ARP is calling for the 28-30 ft-lbs?
That's my worry here...the reason bolts work is because they are stretched to a certain yield, ARP claims they have a 75% torque rating on their bolts...so if I under-torque these they have pretty good chance of backing out, no? Even if I use the BLUE Loctite...
I suppose maybe a better question would be: is there anything in the converter mount that I should worry about if I chose to torque the bolts to the full 28 ft-lbs that ARP recommends? The mount points are just steel blocks welded onto the converter, that 28 ft-lbs should not be enough to strip the threads or brake them lose, right?
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Re: ARP flexplate to converter bolt torque???
[Re: CR8CRSHR]
#1333196
11/17/12 03:56 PM
11/17/12 03:56 PM
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Joined: Jan 2003
Posts: 1,797 Windsor, ON, Canada
Diplomat360
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 1,797
Windsor, ON, Canada
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LOL...yes, of course I do...keep in mind that even though this is going into my '80 Diplomat coupe, all the parts I'm using are non-OEM...so the FSM recommendation, while certainly valid for OEM parts is not quite right for aftermarket parts.
But yes, if the aftermarket is not providing the info, I use the FSM.
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