Spark plug question

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Cooper04

Cooper04

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Hey guys, does anybody know the difference between a CMR7H plug and a CMR7H10 plug? They sell the H10 at my local autozone and I’ve used them in my rc before but what’s the actual difference? I was thinking the 10 might have to do with the gap because it visually does look like a ever so slightly larger gap than the normal 7H plug but I’m not sure.
 
Thanks for answering. So I could regap it and it’d still work right? Or should I not bother and just buy the normal ones from Dave’s
 
Dear Members,
I tuned my Zenoah G320 to perfection using the E3.24 plug. I was impressed with the plug.
I am sorry but I cannot determined the improvements on the low and middle ranges, it may be a combination of both tuning and plug.
But for me, I will continue using the E3.24 Spark Plugs.
P.S. The resistor in the plug has no affect on your vehicle electronics.
Best Regards,
William E. Burrows Jr.
AKA: Road Reapervlcsnap-2018-08-12-16h33m19s480.jpg
 
William E Burrows Jr said:
Dear Members,
I tuned my Zenoah G320 to perfection using the E3.24 plug. I was impressed with the plug.
I am sorry but I cannot determined the improvements on the low and middle ranges, it may be a combination of both tuning and plug.
But for me, I will continue using the E3.24 Spark Plugs.
P.S. The resistor in the plug has no affect on your vehicle electronics.
Best Regards,
William E. Burrows Jr.
AKA: Road ReaperView attachment 65475
Click to expand...
Checked and my local oreilly apparently has some in stock. They look interesting with the diamond shaped ground electrode instead of the normal design on the CMR7H, I might have to get at least one and try them out
 
Not to be a peepee, but your likely reading them wrong, unless your cutting the threaded area off, or using a plug reader. 2 strokes are particularly difficult to read properly.
Here's the link, where I covered the topic recently, found a few decent videos of guys explaining it better then me.
https://www.largescaleforums.com/threads/updated-plug-chart.25753/

@dougstar can you make this link a sticky, or insert it in the plug color chart thread?
 
Seandonato73 said:
Not to be a peepee, but your likely reading them wrong, unless your cutting the threaded area off, or using a plug reader. 2 strokes are particularly difficult to read properly.
Here's the link, where I covered the topic recently, found a few decent videos of guys explaining it better then me.
https://www.largescaleforums.com/threads/updated-plug-chart.25753/

@dougstar can you make this link a sticky, or insert it in the plug color chart thread?
Click to expand...
Ill check it out ! BTW I raced 2 stroke karts for 6 years and had to read plugs on 2 strokes with $1600 motors so we had to be right @! !
 
Last edited:
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