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Old 10-21-2006, 12:03 PM   #1 (permalink)
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spark plugs torque specs???

greetings, i was in the process of changing my spark plugs and noticed the manual says 150 inch-lbs. I was confused, is there another torque wrench to use? I currently have a torque wrench that says "foot-lbs". Should I go buy a torque wrench thats labeled "inch-lbs"??? I know for sure that I should not torque these spark plugs with the same torque wrench as the one i use for my lug nuts since 80 ft-lbs on my lug nuts are freakin tight already!!! thanks for the help!
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Old 10-21-2006, 01:02 PM   #2 (permalink)
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Just wrist tight buddy. Do not overtighten, these are threads you absolutely don't want to strip. If you wanna be technical and use a torque wrench, then 150" lbs. = 12.5' lbs. Again, that's 12.5 foot pounds.
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Old 10-21-2006, 01:24 PM   #3 (permalink)
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finger tight, then 1/4 turn is how i do new plugs. that crushes the steel washer into place well, however i do this with a COLD engine. on a warm/hot engine i use finger tight and 1/8th turn then i'll recheck them later and snug them down a little more if needed. reason being, hot aluminum is ALOT softer than cold aluminum.
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Old 10-21-2006, 03:27 PM   #4 (permalink)
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yea I also do it by hand, shop I worked at it did it that way too. Just do not over tighten, aluminum isn't that hard to mess up :p
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Old 10-21-2006, 06:58 PM   #5 (permalink)
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yeah thanks guys for confirming, I also noticed that it was only nug tight and not real tight
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Old 10-21-2006, 07:18 PM   #6 (permalink)
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As long as they're tight enough that you can't losen them up by hand, you should be ok. I usually tighten them a couple of turns and that's it.
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Old 10-21-2006, 07:57 PM   #7 (permalink)
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I thread them by hand with the extention, rather than with the socket wrench so I don't corss thread it
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Old 10-23-2006, 01:33 PM   #8 (permalink)
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Aluminum heads max 22 ft lbs. I use a ratchet stright up and down with my one hand, spin the ratchet with my other hand with one finger until i can't spin it anymore and it always works fine.

Dont be a jackass and tighten it to all hell and make it hard for someone else to get out later
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