the best replacement sparkplug for a xt

[Racerx]

anybody know the best spark plug to use? also just put on a rear mount jetpro, kinda reminds me of having pitpasses for the supercross, also put in a killerbee but my hitec throttle servo started dancing any ideas on that one, i read where a bad plug would do that , not so sure. I love my xt and putting on that jetpro pipe was like adding nitro permantly.

 

[Obeast44]

CMr7h i think is the right plug.

 

[Deluge]

Or RZ7C. Use whatever you can find locally.

 

[Keith81]

Or RZ7C. Use whatever you can find locally.

What brand is this plug ?

 

[cordy]

The cmr7h= cold,cmr8= hot,and there is an autolite subb for the cmr7.

 

[Fabe]

What brand is this plug ?

RZ7C is Champion, whereas CMR7H is NGK.

 

[DustyR3825]

I prefer NGK plugs

 

[Dirtconvert]

for the weedwacker motors, champion is a better choice than any other brand. As far as your servo going nuts, make sure you are using a resistor plug. If it does it all the time with any plug, change your plug cap, you have a short in it.

 

[Keith81]

RZ7C is Champion, whereas CMR7H is NGK.

Thank you for the response!


NGK is what I will go with, always used them in my hondas and dirt-bikes when I was younger....

 

[johnnylaw]

Thank you for the response!
NGK is what I will go with, always used them in my hondas and dirt-bikes when I was younger....

ngk is the best i think ive always ran them in my street / dirtbikes

 

[IMA_MudSlut]

never could tell thee difference

anybody know the best spark plug to use? also just put on a rear mount jetpro, kinda reminds me of having pitpasses for the supercross, also put in a killerbee but my hitec throttle servo started dancing any ideas on that one, i read where a bad plug would do that , not so sure. I love my xt and putting on that jetpro pipe was like adding nitro permantly.

This is the same debate as "what's the best 2-cycle oil to use". It's like we're all still looking for the "holy grail" I just use all of them and draw my conclusion based on my experience and pick the one I think gave me the best outcome. In this case I bought both brands and when it's time to replace my plug I just grab the one my eyes saw first, use it and I'm a happy camper I've used a lot of them in my car,ATV, dirtbikes etc. and I could never tell the difference, of course the companies that makes them would argue for obvious reason

 

[SmokeScream]

The cmr7h= cold,cmr8= hot,and there is an autolite subb for the cmr7.

if these are ngk plugs 8 is colder than 7. for some reason with ngk 1 is hot 10 is cold.

 

[Jonstewart1979]

Anyone try a cmr6h? Would the hotter plug damage the engine?

 

[phreerider]

NGK cmr 7h. the 2 stroke reaction really not a high heat for self cleaning , comparatively low temp. hotter plug no advntage

and castor 927 for 2stroke, if you rebuild, this is what you want. and yamalube as well

 

[Jonstewart1979]

Has anyone tried a cmr6h?

 

[Jonstewart1979]

Sorry, missed the reply. I am wondering if the 6h is safe because they can be had for $3

 

[BertR]

On one of my home port jobs I ran a cmr4h for a long time and had no issues. There is a thread cmr4h ...I keep one in the jockey box in case my primary fails.

 

[Ildy666]

Bosch also makes plugs for the smaller engines.we use them in the smaller stihl chainsaws

Bosch super R10 I get them at the chainsaw shop.