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post #1 of 14 (permalink) Old 10-26-2008, 03:07 PM Thread Starter
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Spark Plug Torque?

Does anyone know what to torque spark plugs to?I don't usually use a torque wrench but would like to make sure they are correct.

1998 Polaris Indy 500
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post #2 of 14 (permalink) Old 10-26-2008, 03:44 PM
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Use "turn of nut" method as described on package.

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post #3 of 14 (permalink) Old 10-26-2008, 05:41 PM Thread Starter
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I know the package says 1/2 to 5/8 turn with washer and 1/8 without. But my Polaris manual says 11 foot pounds.

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post #4 of 14 (permalink) Old 10-26-2008, 06:50 PM
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Looks like you answered your own question.

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post #5 of 14 (permalink) Old 10-26-2008, 06:55 PM Thread Starter
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Not really. The NGK website says 18 to 21.6 lb ft. for 14mm aluminum heads. That seems pretty tight to me.

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post #6 of 14 (permalink) Old 10-26-2008, 07:49 PM
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Use a torque wrench to see how many ft-lbs 1/2 to 5/8 turn creates.

Polaris service manual says 11 ft-lbs with threads lubricated with anti-seize compound. Maybe NGK lists their torque value with dry threads.

I know with structural steel bolted connections, lubrication is not recommended because of possibility to overtorque the bolt assembly. Could explain the lower Polaris value.

Hope this helps.

Only two seasons up here, Construction and Winter!

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www.ontarioconditions.com Ontario Conditions and more!

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post #7 of 14 (permalink) Old 10-26-2008, 07:53 PM
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Just snug 'em up. You basically want them just a little bit tighter than finger tight. Just make sure that you dont go crazy torquing the plugs because it doesnt take much to strip out aluminum, especially if the engine is warm when you tighten the plugs.

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post #8 of 14 (permalink) Old 10-27-2008, 06:32 AM
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If it has a washer, get it snug, then go another quarter turn. It ain't rocket science.

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post #9 of 14 (permalink) Old 10-27-2008, 03:58 PM Thread Starter
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No shit. Just asking a few questions. That is the purpose of this site, RIGHT?

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1996 Yamaha Vmax 600
1991 Yamaha Phazer II48
1986 Yamaha SRV 540*Freebee*
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post #10 of 14 (permalink) Old 10-27-2008, 05:19 PM
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I'd go with Polaris' recommendations, as they use NGK from the factory, and they have a spec for it. I personally just put them on there using my calibrated elbow.



1997 Polaris Indy 700 RMK - Twin SLP pipes, EGT gauges -- "Fukengruven"
1997 Polaris Indy Trail RMK 488 - Stock -- "Yard Sale"

Polaris 580/597/600 crank info: http://www.geocities.com/schmidt92/polaris_faq.html

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post #11 of 14 (permalink) Old 10-27-2008, 09:30 PM Thread Starter
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Ya, thats what I normally do but when i was thumbing through the polaris specs it said 11 ft lbs. So when I was bored I decided to check and where I thought was tight was not even close to the 11 ft lbs. I was probably half or less of that. Just learning about sleds . I can admit I am not the most knowledgable mechanic if I was I would not visit this site to knock others. Anyway thanks for the helpful advice.

1998 Polaris Indy 500
1996 Yamaha Vmax 600
1991 Yamaha Phazer II48
1986 Yamaha SRV 540*Freebee*
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post #12 of 14 (permalink) Old 10-27-2008, 09:36 PM
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Keep it loose enought o be able to remove them with the toolkit supplied plug wrench! IMO, if your hands are kinda cold, and you need to change a plug, and the plug is to tight, you have issues. So keep that in mind, and you might torque one down and see if you can remove it with the little wrench. If you can't I'd set it to the highest that you can remove it. Make sense?



1997 Polaris Indy 700 RMK - Twin SLP pipes, EGT gauges -- "Fukengruven"
1997 Polaris Indy Trail RMK 488 - Stock -- "Yard Sale"

Polaris 580/597/600 crank info: http://www.geocities.com/schmidt92/polaris_faq.html

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post #13 of 14 (permalink) Old 10-27-2008, 11:32 PM
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Don't get over sensitive, mon!! It's just a frickin' spark plug....shoot, I 've seen guys tightening them with a pipe wrench & guess what? The sled ran fine!!

Good advice from Sklig!!

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post #14 of 14 (permalink) Old 10-28-2008, 04:21 PM Thread Starter
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I'm sorry I asked about the DAMN plug torque.Screw it. Sleds run fine.I'll stick to tightening them the old way.Who needs a torque wrench anyway. PLEASE NO REPLIES ON THAT ONE!

1998 Polaris Indy 500
1996 Yamaha Vmax 600
1991 Yamaha Phazer II48
1986 Yamaha SRV 540*Freebee*
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