When reinstalling a used plug, after having a look at it, once it is seated hand tight, how much of a turn should it get, 1/8, 1/4, 180deg? This is in a TwinCam

 

A light coat of anti-seize and 12-18 Ft. Lbs. Torque.

It`s right there in your service manual.

 

Right on Dan89FLSTC. Trex do you have a FSM? Maybe save yourself some bashing next time and Google that. LOL! IMHO, I'd stay on the low side of that torgue setting, especially after the crush washer on the plug has been flattened. Lot of guy just use the feel method. Also, if the bike's EFI make sure non of the anti seize gets on any part of the plug that's exposed inside the cylinder. It can mess with the knock sensors.

 

Google "can you use anti-seize on spark plugs"and decide for yourself. This has been discussed many times and is right up there with oil threads, lol.

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Google? What are these forums for? If it's to tuff to answer a question why bother? I don't know why I bother any more with forums.I don't want to use a torque wrench so how much of a turn after it is seated., if that's too much forget it.

 

This much.
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When using that much, it measures more on my computer screen than on my phone's screen.

Is there a conversion table?

 

From the manual - Apply LOCTITE ANTI-SEIZE to the spark plug threads. Install and tighten to 12-18 ft-lbs.

Quote from NGK "Anti-seize can act as a lubricant, altering torque values up to 20 percent, increasing the risk of spark plug thread breakage and/or metal shell stretch. ... Do not use anti-seize or lubricant on NGK spark plugs."

The HD manual will take into account the lubricating properties of anti seize. Use HD plugs and you should be good to go!

 

It's forgotten.

 

Dude, I thought my answer was pretty clear. Nobody's got a "turn" measurement because of like I said, how much has the crush washer been crushed? If you don't want to use a torque wrench then also like I said, use the "feel method". Just tighten them snug but don't grunt over them. I tell everyone use the gallon of milk or water method. Pick the gallon up a few times to create a "muscle memory" and then use that same memory, plus a little. By the way that's about 8 lbs if you don't want to Google that.