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Head bolt torque specs accuracy |
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irish13jeff
AMC Apprentice Joined: Aug/13/2011 Location: Florida Status: Offline Points: 181 |
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Posted: Jan/08/2019 at 8:56am |
well my Chilton calls for all to be torqued to 85ft lbs.
However,when I opened my box of new ARP bolts in specifically said to only torque to 70ft lbs. The inter web calls for 100ft lbs and 110ft lbs on number 11 bolt only. Other sites call for 85ft lbs and only 80ft lbs on number 11. I only wanna do this once so clarification would be greatly appreciated |
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Please don't tell my parents I'm a truck driver..... They think I'm a piano player in a whore house...
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rocklandrambler
AMC Addicted Joined: Feb/09/2013 Location: Nanuet, NY Status: Offline Points: 3953 |
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What engine and year?
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1974 Hornet X (new) 1975 Gremlin X (new) 1964 Classic 660 Cross Country 1965 American 440-H |
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Trader
AMC Addicted Joined: May/15/2018 Location: Ontario Status: Offline Points: 6762 |
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I'd be phoning ARP.
Lubricated bolts can go up to 15% less torque but that's 12.7 ft/lbs less and not 15 ft/lbs. AMC always stated to install dry but most use a little engine oil and torque to spec with few problems. I don't know about #11 at that torque - just seems wrong. By default the TSM is correct.
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irish13jeff
AMC Apprentice Joined: Aug/13/2011 Location: Florida Status: Offline Points: 181 |
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I’m guessing the reason for the #11 torque difference is due to the fact it’s at a water jacket.
I just called ARP,they said to go by their specifications of 70 ft lbs using the supplied assembly lube and to just use thread sealer on #11
Edited by irish13jeff - Jan/08/2019 at 10:04am |
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Please don't tell my parents I'm a truck driver..... They think I'm a piano player in a whore house...
http://www.legionofjeepers.com |
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tomj
AMC Addicted Joined: Jan/27/2010 Location: earth Status: Offline Points: 7522 |
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trust ARP. it's their fastener. bolts clamp part together by stretching, the stretch is a function of fastener material, etc. the A.R.P. is also far higher quality. i've only bought them once -- still have them. i would DEFINITELY would replace 50 year old critical fasteners with ARP parts on every engine from now on. they're not even expensive! studs are superior to bolts, the torque is up at the top, not down in the block. get the lube too. it's not grease, you'll be surprised how much better it all works. here's my old notes on this: http://195.6ohv.com/HEAD/index.html Edited by tomj - Jan/09/2019 at 10:27pm |
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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