Spark Plug Specs - HCS Snowmobile Forums

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Old 12-06-2006, 11:07 AM   #1 (permalink)
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I am not sure if this has been done, but thought it might be a good idea. I would like to use this topic for people to post questions/answers/insight about Spark Plugs for Poo's. This would prevent people from having to search through every post looking for their specific machine, rather they would just look for the part of their machine and go from there. Let me know if this is a terrible idea or if it would be nice to have other topics like this.
Please Post anything regarding spark plug brands, usage, specs, how to read plugs, proper gaps, etc.

I will start! Using NGK BPR9ES on an 2001 XCSP 800, what should the plug gap be? Also, does anyone know where to find BPR9EVX plugs, or are they even still made?
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Old 12-06-2006, 11:49 AM   #2 (permalink)
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wow your going to start some stuff with using NGK's... albeit thats ALL i use. If i remember correctly i believe its .025" on the gap though.

What are the EVX's? That the iradium plug? dont think they would make any difference other than in your wallet. Some say indexing the plugs can make a difference... never done it though.

Reading the plug is a start.. read the top of the piston is better.
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Old 12-06-2006, 11:56 AM   #3 (permalink)
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Quote:
wow your going to start some stuff with using NGK's... albeit thats ALL i use. If i remember correctly i believe its .025" on the gap though.

Reading the plug is a start.. read the top of the piston is better.[/b]

i agree,most here like the champion plugs,myself dont care for them,the availability of alternative heat ranges makes me lean to the NGK.

As far as reading the plug vs reading the piston top....the plug will give real time of what your tuneup is doing,the piston top takes much longer to change colors.
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Old 12-06-2006, 12:02 PM   #4 (permalink)
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I am not 100% sure what the EVX are, I contacted SLP regarding my cheater heads and he recomended the EVX. My thoughts have always been, check plugs often, keep consitant gap, clean/replace when needed. Really when you think about it, a plug is a very simple piece. People argue about getting "more" spark with some that others, but its the coil that produces the voltage. As long as the heat rating is the same, and it is a "recomended" plug for a machine, I dont get caught up in brand loyalty until I start having problems with one or the other. Champions are in there right now, but I cannot find them outside of the motorsports store which of course they charge a shit ton for, whereas I can get the NGKs at Fleet Farm for $1.25
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Old 12-06-2006, 12:02 PM   #5 (permalink)
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I run BR9EYA. Not much more cost that a regular BR9ES, but can handle cold start warm ups/with choke. They assist in keeping the motor from loading up and fouling plugs.

I gap mine around .025 and use spacers to point the firing portion of the plug directly in the path of inicomming fuel. Don't know if it helps or not, but seems logical.

I haven't tried any other plugs. Wondering myself if an iridium, Denso, NGK or similar would be better?

Probably not worth the extra cash though. I run Denso's in my lightning. They were $9 per plug! Expensive stuff.
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Old 12-06-2006, 04:05 PM   #6 (permalink)
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99 xcsp 700 Gap?

I just bought a set of Hot-wires so after some testing we will see how things go. :beerchug:
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Old 12-06-2006, 08:12 PM   #7 (permalink)
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I've had better results (timed runs) with the EYA than the IX (iridium) in the ultra. The EYA last for more full throttle "cooling" return road trips as well. They're also about 1/5 the price. $1.79 vs. $8.99 Just had to try the high dollar stuff once though!
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Old 12-06-2006, 08:32 PM   #8 (permalink)
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Quote:
I am not 100% sure what the EVX are, I contacted SLP regarding my cheater heads and he recomended the EVX. My thoughts have always been, check plugs often, keep consitant gap, clean/replace when needed. Really when you think about it, a plug is a very simple piece. People argue about getting "more" spark with some that others, but its the coil that produces the voltage. As long as the heat rating is the same, and it is a "recomended" plug for a machine, I dont get caught up in brand loyalty until I start having problems with one or the other. Champions are in there right now, but I cannot find them outside of the motorsports store which of course they charge a shit ton for, whereas I can get the NGKs at Fleet Farm for $1.25[/b]
carquest carries the champions around here.
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