LO206 Mychron 5s 2T - temp sensors

Driving, Data & Fitness.
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Hi folks,

Couldn’t find a mychron 5s, only the 2t with the two temp sensors included. Since there’s no water on a 206 i went with the cylinder head temp (CHT) probe and exhaust gas temp (EGT) probe for my probes.

CHT:
I understand that if I remove the spark plug ring I am infringing lo206 rules, and if I leave it and just stack the sensor in there my plug is removed from the combustion chamber by the thickness of the sensor ~1-2mm.
So that’s kinda useless for races but an older plug without a ring works great for getting some data in practice. ( Mind you I’m collecting the data to get to know my engine better, understand that there’s no practical use but I have the sensor so I want to play with it… Bear with me plz)

EGT:
I can’t find much info on this for LO206. instructions suggest mounting 150mm from engine face in the exhaust pipe.
My questions:
Does installing this (welding it into the exhaust pipe) infringe on LO206 rules? I couldn’t find any definite info
What can I use the sensor for if not exhaust temp?

I’d like to run some temp sensors as I will be racing in 110F + temps next season and want to make sure I know how long I can stay out for without burning my machine up. Even if it just for practice to get the data that lets me make better decisions in races/longer practice etc

Thanks for getting to here, appreciate your input!!

Andreas

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Yes, EGT sensors are illegal in 206 rules. It is considered modification to the exhaust pipe.

Your understanding of CHT usage is spot on. I would encourage you to use EGT in the same manner. Have a “practice day” pipe with a bung in it. Use it to get to know your engine, kart, track, gearing, etc. Then, on race day, put your legal pipe on.

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Appreciate the info, thanks for confirming!

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2T is a 2 stroke thing, not allowed to run two sensors in LO206.

Welcome to KP BTW, this place is a gold mine. . . .

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