ARP 240-7302 converter to flexplate bolt torque?
#1615363
05/03/14 12:16 PM
05/03/14 12:16 PM
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Joined: Jan 2003
Posts: 1,793
Windsor, ON, Canada
Diplomat360
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Windsor, ON, Canada
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Upgrading to a new torque converter, bought the ARP 7/16" bolt kit, this is ARP part# 240-7302. Called-in to get the torque specs because the on-line web site page does not have them listed. Was told I need to torque these to 60 ft-lbs...wow...that seems like a LOT...want to get a feel for what everyone else has done here?
I am using the ARP Super-lube, was told to put this under the bolt head only and use Blue loctite on the threads, which is what I did on my previous install, worked out great that way.
This is on a SB 360, B&M offset weight flexplate, Dynamic 9.5" converter.
Thanks you guys!
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Re: ARP 240-7302 converter to flexplate bolt torque?
[Re: Diplomat360]
#1615364
05/03/14 12:28 PM
05/03/14 12:28 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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The std torque for the (6) OE flexplate to crank bolts is 55 ft lbs. The (4) small plate to converter bolts are 200 inch for 5/16" bolts & no way will they take 60 foot lbs. either the guy was messing with you or he inadvertantly looked at the plate to crank bolt spec & if the lube was used on the threads (which it should not) it'd make you crank it even tighter (its slippery) before it reached 60 & they'd very likely snap at 60 with or without lube. Call him back & have him recheck
live every 24 hour block of time like it's your last day on earth
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Re: ARP 240-7302 converter to flexplate bolt torque?
[Re: RapidRobert]
#1615366
05/03/14 01:20 PM
05/03/14 01:20 PM
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Windsor, ON, Canada
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Quote:
...The (4) small plate to converter bolts are 200 inch for 5/16" bolts & no way will they take 60 foot lbs....
I agree, if this was the 5/16" bolt that 60 flt-lbs would be too much, the correct ARP torque for the 5/16" kit (part# 240-7301) is 30 ft-lbs.
...but the bolts I have are the 7/16" pieces...and even then the 60 ft-lbs just seems like a lot...I'm probably just overthinking this since the bolt only attaches to the converter mounting pad...still, according to the published ARP specs on the general torque values even the 60 ft-lbs is less then their recommended torque for a general 7/16" fastener (see the attachement).
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Re: ARP 240-7302 converter to flexplate bolt torque?
[Re: buildanother]
#1615367
05/03/14 01:23 PM
05/03/14 01:23 PM
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Joined: Jan 2003
Posts: 1,793
Windsor, ON, Canada
Diplomat360
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Quote:
...60 is about right for 7/16 though. And have seen more than one with loosening bolts...
My first install of the smaller 5/16" did just as what you describe...a single bolt backed out enough for the head to start hitting the dust-shield...made for some funny racket for sure...and a pile of worry on my part for that afternoon! Fixed that with a re-do of all bolts and a Blue loctite on all threads...never a problem since.
Thanks for the feedback, the more I think about it the better the 60 ft-lbs starts looking...
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Re: ARP 240-7302 converter to flexplate bolt torque?
[Re: Diplomat360]
#1615368
05/03/14 01:34 PM
05/03/14 01:34 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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My bad I missed that you said 7/16 rather than 5/16. yes blue loctite is highly recommended.
live every 24 hour block of time like it's your last day on earth
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Re: ARP 240-7302 converter to flexplate bolt torque?
[Re: Diplomat360]
#1615369
05/03/14 04:46 PM
05/03/14 04:46 PM
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Joined: Jan 2003
Posts: 26,514
Rio Linda, CA
John_Kunkel
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Rio Linda, CA
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I wouldn't use the ARP lube, use red Loctite.
The INTERNET, the MISinformation superhighway
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Re: ARP 240-7302 converter to flexplate bolt torque?
[Re: John_Kunkel]
#1615370
05/03/14 05:06 PM
05/03/14 05:06 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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John is that ARP lube under the bolt head and red loctite on the threads?
live every 24 hour block of time like it's your last day on earth
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Re: ARP 240-7302 converter to flexplate bolt torque?
[Re: John_Kunkel]
#1615371
05/03/14 06:27 PM
05/03/14 06:27 PM
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Joined: Jan 2003
Posts: 1,793
Windsor, ON, Canada
Diplomat360
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top fuel
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OP
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Joined: Jan 2003
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Quote:
I wouldn't use the ARP lube, use red Loctite.
ARP lube for under the bolt head only (I assume to minimize the friction of the head bolt against the flexplate and get a true reading for the threads engagement).
But RED Loctite??? Used BLUE on the current converter and even with the 5/16" it took a good pull with the wrench to get them out...doesn't the RED stuff require heat to disassemble?
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Re: ARP 240-7302 converter to flexplate bolt torque?
[Re: Diplomat360]
#1615372
05/03/14 08:22 PM
05/03/14 08:22 PM
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Joined: Jan 2003
Posts: 26,514
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,514
Rio Linda, CA
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I've been using red since day one on both 5/16" and 7/16" bolts and never had a problem removing the bolts.
Considering the number of posts here on converter bolts coming loose I'd say red (by itself) is the safe way to go.
The INTERNET, the MISinformation superhighway
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