torque specs for spark plugs

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Mar 8, 2005 | 05:30 PM

2003silvercorvette

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From: nc

torque specs for spark plugs

well as the title says i need to know the torque specs for the spark plugs on our cars, thanks

Mar 8, 2005 | 05:44 PM

ErnieN85

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From: Montoursville Pa

New 20nm
subsequent 15 NM
pretty low! also done with engine cold

Mar 8, 2005 | 05:50 PM

Patches

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From: Lake Elsinore, CA

Or 15 lb. ft. when heads are new and 11 l. ft. from then on.

Mar 8, 2005 | 05:54 PM

RPOZ4Z

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From: Galloway Twp. NJ

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also make sure you use antiseize compound on the plug threads.

Mar 8, 2005 | 09:13 PM

66427-450

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From: Southwest MI

Quote:

Originally Posted by RPOZ4Z

also make sure you use antiseize compound on the plug threads.

now days, synthetic oil is recommended (over antiseize).... then torque to 10-11#

Mar 8, 2005 | 09:44 PM

ErnieN85

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From: Montoursville Pa

So Who has a torque wrench that goes this low?
mine quits reading at 20 lbs
(3/8 drive craftsman)

Mar 8, 2005 | 10:35 PM

Dan_the_C5_Man

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From: Atlanta metro Ga.

Quote:

Originally Posted by ErnieN85

So Who has a torque wrench that goes this low?
mine quits reading at 20 lbs
(3/8 drive craftsman)

Exactly.. Tq wrenches are for cylinder head, rod and crank cap bolts, and larger suspension fasteners..

Just use anti-seize and snug 'em down nice and tight, don't lean on the wrench too much.

Last edited by Dan_the_C5_Man; Mar 9, 2005 at 12:36 AM.

Mar 8, 2005 | 11:43 PM

2KFRC5

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From: Arroyo Grande CA

Quote:

Originally Posted by ErnieN85

So Who has a torque wrench that goes this low?
mine quits reading at 20 lbs
(3/8 drive craftsman)

I have 2, a Husky 3/8", and a Craftsman 3/8", and both go down to 10FtLbs on the shaft.

http://www.sears.com/sr/javasr/produ...44563000&cs=e1

Last edited by 2KFRC5; Mar 8, 2005 at 11:47 PM. Reason: Added Link

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Mar 9, 2005 | 12:39 AM

Dan_the_C5_Man

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From: Atlanta metro Ga.

Quote:

Originally Posted by 2KFRC5

I have 2, a Husky 3/8", and a Craftsman 3/8", and both go down to 10FtLbs on the shaft.

http://www.sears.com/sr/javasr/produ...44563000&cs=e1

The only time I've ever stripped a bolt (10mm case bolt on a bike motor) was using a Tq wrench.. Live and learn. I'll always trust my human touch over a Tq wrench at these low values.. Just my 2.5 cents.

Mar 9, 2005 | 01:14 AM

#10

larrysb

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From: Redacted

I have torque wrenches that go down to inch-lbs. Common for working on aluminum, particularly aircraft. But getting to be more common on cars with all the aluminum and lightweight alloys, magnesium and so on. It's more important for the light stuff to be torqued accurately. When a torque spec is 15 in-lbs, the line between too loose and too tight is very critical.