Spark-plug torque?

SprEE*MP* · Post by SprEE*MP* » Fri Oct 24, 2008 3:27 pm

Hey, what is the spark-plug torque? Just approx. doesnt need to be exact. Reason for asking is i have had so much unfortunate things happen to my Spree, that i really don't wanna have to get a new head if i strip it. It's already been out of service for over a month and a half!! I know that usually you just tighten until it stops or feels very tight, but i'm not taking anymore chances.

Bear45-70 · Post by **Bear45-70** » Fri Oct 24, 2008 3:36 pm

Aluminum heads are easy to strip out. Honda gives no number, only this statement.

"With the plug washer attached, thread the spark plug in by hand to prevent cross-threading. Tighten the spark plug another 1/2 turn with a spark plug wrench to compress the plug washer."

That said never more than 15 foot pounds.

Remember that your hand and arm are not a calibrated torque wrench and will always over torque. As said before, over torquing in and aluminum head is a short trip to disaster. Even though you can heli-coil the hole, you do need to remove the head to do it right.

SprEE*MP* · Post by SprEE*MP* » Fri Oct 24, 2008 3:39 pm

OK, thanks,

Dac · Post by **Dac** » Fri Oct 24, 2008 4:06 pm

whoa, i thought you had to go till tight then 1/8 turn more. Not half, have seems crazy.

Bear45-70 · Post by **Bear45-70** » Fri Oct 24, 2008 4:21 pm

Dac wrote:whoa, i thought you had to go till tight then 1/8 turn more. Not half, have seems crazy.

Thanks for the reminder. The 1/2 turn is with a new plug and/or washer even a 1/4 turn will work with a new plug. An 1/8 turn is with a used plug and/or washer. There is a lot of crush in the new washer, not so much in a used one.