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How many CHT and EGT probes?

  • Olsonlarry9
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7 months 11 minutes ago #20932 by Olsonlarry9
How many CHT and EGT probes? was created by Olsonlarry9
During my Kitfox 6 building project I noticed that my 912 ULS has a CHT port on every cylinder but the installation manual says that probes (temp senders) are only installed in cylinders 2 and 3. My engine is several years old and has never been installed or run yet. As a result, there are no EGT holes drilled in any of the exhaust pipes. I have a single analog gauge I want to use but it can only monitor one CHT and one EGT at a time (i plan to use a selector switch to catch them all). Does Rotax recommend monitoring all four CHTs and EGTs or just on cylinders 2 and 3? Or is this aircraft project specific or a builder option only?

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6 months 4 weeks ago #20933 by Roger Lee
Replied by Roger Lee on topic How many CHT and EGT probes?
CHT's are only on 2 & 3 cyl. for the older engines. If you are only going to use one use #3 on the right rear cyl. The EGT's can be all 4 or just two. If you use only two then use the rear cyls. 3 & 4.
Ideally it would be good to have both CHT's and all 4 EGT's.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-574-1080 Home (TRY HOME FIRST)
520-349-7056 Cell

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3 months 1 week ago - 3 months 1 week ago #22281 by funpilot2
Replied by funpilot2 on topic How many CHT and EGT probes?
I have a 914 and Garmin G3X Setup. Currently, I only have a single CHT reading and no EGT. Is there a way to add monitoring for all four EGTs?

G3X PFD
Last edit: 3 months 1 week ago by funpilot2.

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3 months 1 week ago #22283 by Roger Lee
Replied by Roger Lee on topic How many CHT and EGT probes?
Yes you can add the EGT's and another CHT if you want. All you need to do is get a gauge set that reads all these. There are many on the market.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-574-1080 Home (TRY HOME FIRST)
520-349-7056 Cell

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3 months 1 week ago #22284 by funpilot2
Replied by funpilot2 on topic How many CHT and EGT probes?
Are the probes already installed? I think the Garmin interface should be able to handle this. I need to find a Garmin Expert.

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