Proper gap on plugs?

[kaboominator]

I recently purchased new plugs for my 15 hp 2 stroke (88). I got the NGK equivalent of the champions i had installed. The question i have is does it matter if i am running at one higher element of heat rated plug? For some reason i cannot get the NGK plug that NGK recommends when you go here http://www.ngk.com/default.asp and the champion equivalent using the crossover conversion charts is one heat rating higher. So does it matter that i run these new plugs at a higher heat rating? Also the gap...it is specified to be 0.060 for theses plugs on my motor. This seems to be alot but ive read three different places and also local shop say thats what it is. But my know it all mechanic friend whom i asked to borrow his gap tool gapped them by eye and said 0.060 is way too big even for a caddy...so he put them at 0.040 by eye...lol yea exactly..so im wondering what are the ill effects of a smaller than recommeded gap and should i be putting it back to 0.06 (ser# 0B339198)

 

[phatmanmike]

Re: Proper gap on plugs?

all of my mercs always used the gapless NGKs

 

[kaboominator]

Re: Proper gap on plugs?

Could you explain what you mean by Gapless, Please?

 

[Mike722]

Re: Proper gap on plugs?

Gapless plugs have no prong that comes out and over the electrode. In a way they are factory set and the gap can not be adjusted.

If the gap should to be .060, reset them. I would ask the local shop about the heat range. I have seen in Lawn mowers recommanding the NGK, that the Champions will not last very long before they foul out.

Hope this help
Mike

 

[ricksrster]

Re: Proper gap on plugs?

 

[rickdb1boat]

Re: Proper gap on plugs?

Champion has the gap recommended at .040....L92LCC