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Author Topic: What's the spark plug thread size.  (Read 6692 times)

Offline Oldtimer1

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What's the spark plug thread size.
« on: March 30, 2013, 06:58:33 pm »
I have a chance to buy a nice Snap On compression tester but I need to know if it comes with the right size adapter first. Thanks
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Offline Legends57x

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Re: What's the spark plug thread size.
« Reply #1 on: March 30, 2013, 09:01:02 pm »
NGK spark plugs that are normally used in Legends Yamaha engines are 12 mm thread.  See link below...

http://www.summitracing.com/parts/NGK-2202/
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Mark Ritger
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Offline Oldtimer1

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Re: What's the spark plug thread size.
« Reply #2 on: March 31, 2013, 12:31:36 pm »
Thanks.
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Offline Oldtimer1

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Re: What's the spark plug thread size.
« Reply #3 on: March 31, 2013, 01:02:21 pm »
This is what I'm looking at, best he'll go is $90 for both units.....hopefully the pics will work.

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Offline VMS Motorsports

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Re: What's the spark plug thread size.
« Reply #4 on: March 31, 2013, 07:25:32 pm »
Harbor Freight unless you're stuck on a particular brand name
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JIM BUCHER
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Offline Legends57x

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Re: What's the spark plug thread size.
« Reply #5 on: March 31, 2013, 07:57:42 pm »
Bought digital tester from McMaster-Carr as listed in link below.  Includes 12 mm adapter.  Nice tester - works great.

http://www.mcmaster.com/#compression-engine-testers/=m4gfxv

$90 for both of the Snap-On units sounds like a good deal too.  You may want to contact a Snap-On dealer first for cost if 12 mm adapter is not included.  BTW - Caution when using the leakdown tester.  We have used them for years where I work and have had mixed results with what the readings really mean or if there really is a problem.  
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Mark Ritger
INEX Legends #1x

Offline Oldtimer1

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Re: What's the spark plug thread size.
« Reply #6 on: March 31, 2013, 08:07:52 pm »
The Snap On compression test come with a 12mm adapter so that's a plus, I'm going to roll the dice and wait until Friday and offer him $80.
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Offline justfreaky

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Re: What's the spark plug thread size.
« Reply #7 on: March 31, 2013, 08:12:28 pm »
Lots of different BRAND NAMES out there. Sometimes it depends on your budget.
I've bought some off brands that do just as well as the expensive stuff. Do a little shopping around!

Steve
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Offline Winterracing

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Re: What's the spark plug thread size.
« Reply #8 on: April 01, 2013, 10:10:08 am »
Hell i would scoop that one up, $90.00 for snap on stuff? I believe for the adapter hose itself i paid $40.00 from the snap on dealer.

Dan
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