Questions About NGK BPZ8HS10 Vs BPZ8HN10 | Boating Forum

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You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. Questions about NGK BPZ8HS10 vs BPZ8HN10

• Thread starter Cornphlake
• Start date May 18, 2010

Cornphlake

Cadet

Joined May 13, 2010 Messages 6 Hello everyone, I searched for BPZ8H-S-10 but didn't turn up much of what I was looking for. I am 2 weeks into owning my first pontoon, a 2000 Party Barge 18' with a 2001 Mercury 50 ELPTO. We've taken the boat out three times so far and it runs great. The last time out, it started to feel like it had a **slight** miss but once back to the trailer I figured out the vent on my fuel tank wasn't open. The other 2 times out it ran flawless and I do remember screwing down the vent on the fuel cap while at the house prior to taking the boat out. Why? I don't know, just messing with stuff. I'm thinking it was getting a little lean due to the negative pressure in the top of the tank and the engine was trying to let me know. So anyway, for good measure, I look up the correct plugs for the engine as I'm used to dirt bike 2-stokes and replacing plugs very often so I figure it couldn't hurt. I find that the BPZ8H-N-10 is the correct plug for this engine and that NGK is very proud of their marine plugs. When I go to change the plugs out, I find that the previous owner had installed the BPZ8H-S-10 plugs. From what I can tell, these are meant for 135, 150, 175, 200 etc.. HP 2-stroke Mercury engines. What I am really after is what is the difference in the plugs? I'm not really concerned that anything has gone wrong, but I can't find the info on each plug part number. Would it be worth it to keep these BPZ8H-S-10 around on the boat as spares as they still look usable (not black / fouled), or should I grab another set of the BPZ8H-N-10? Thank you all!!! -Russ

Cornphlake

Cadet

Joined May 13, 2010 Messages 6 Re: Questions about NGK BPZ8HS10 vs BPZ8HN10 I think I've answered my own questions with this PDF file: http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf Seems like the difference to me is a "special electrode end" with the N plugs, vs. a standard shape electrode for the S plugs. I'll keep these BPZ8H-S-10 plugs on-hand as spares. You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link

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