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Thread: High Cylinder Head Temps with 0-340

  1. #1
    Senior Member EVRoosevelt's Avatar
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    Default High Cylinder Head Temps with 0-340

    Is anyone having a problem with high cylinder head temps on #2 & #4 cyls. on the 0-340? My #2 & #4 cyl. run between 400 degs and 415 degs in cruise, OAT is high in the mid 90s the #1 & #3 run in the 350 deg. to 370 deg. range. Not sure why the left side runs so much hotter that the right side, Also if I try and climb at a steep angle with low airspeed they have gone up to 450 deg. on #4 and 440 deg. on #3 in climb, the right side stays down below 400 deg. on #1 &#3.
    Thanks
    EV

  2. #2
    Senior Member Pete D's Avatar
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    Default Re: High Cylinder Head Temps with 0-340

    Have you tried warming the bottom of each cylinder one at a time with a hair dryer or heat gun, and watching the gauge to verify that the probes are not mixed up? Thats where I would start...


    Pete D

  3. #3
    Senior Member EVRoosevelt's Avatar
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    Default Re: High Cylinder Head Temps with 0-340

    What do you mean about mixed up? Like I would have #2 in place of # 3?
    Thanks
    EV

  4. #4
    Senior Member Pete D's Avatar
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    Default Re: High Cylinder Head Temps with 0-340

    Quote Originally Posted by EVRoosevelt View Post
    What do you mean about mixed up? Like I would have #2 in place of # 3?
    Thanks
    EV
    Exactly. This just verifies that prob #3 is in cylinder #3, etc. Makes sure that you are not troubleshooting a problem with the wrong cylinder.

    Pete D.

  5. #5
    Senior Member EVRoosevelt's Avatar
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    Default Re: High Cylinder Head Temps with 0-340

    I checked yesterday and all the probes are on the proper cylinders. Also yesterday I installed the cowl flaps that CubCrafters just sent me and with the cowl flaps fully open the cyl. head temps went down 40 deg. so I am good on the cyl head temps. now.
    Thanks
    EV

  6. #6
    Senior Member Paul's Avatar
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    Default Re: High Cylinder Head Temps with 0-340

    Quote Originally Posted by EVRoosevelt View Post
    I checked yesterday and all the probes are on the proper cylinders. Also yesterday I installed the cowl flaps that CubCrafters just sent me and with the cowl flaps fully open the cyl. head temps went down 40 deg. so I am good on the cyl head temps. now.
    Thanks
    EV
    Hey Mitch, are the cowl flaps that EV is referring to, standard on the CC EX now? I haven't heard Jeff at Suncountry say anything about high cylinder head temps so I'm assuming the new kits and SS models are staying cool even here in AZ.

  7. #7
    Super Moderator Mitch's Avatar
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    Default Re: High Cylinder Head Temps with 0-340

    The cowl flaps have been standard equipment in the kit since late 2010.

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