Results 1 to 5 of 5
  1. 05-04-2017, 05:05 PM #1
    donpilot
    donpilot is online now
    Member
    Join Date
    Dec 2006
    Location
    mt washington ky
    Posts
    2,649

    Operating temperatures

    40 johnson. J40elcec. Idle temp 170,1psi (trolling) on plane 3300rpm 125* at10psi. Are these normal and acceptable? Rainy day and i am bored.
    Reply With Quote Reply With Quote
  2. SEAHORSE
    SEAHORSE is offline
    Moderator SEAHORSE's Avatar
    Join Date
    Jun 2004
    Posts
    9,638
    #2 05-04-2017, 06:09 PM
    How are you measuring it? A digital accurate infrared temp gun on the thermostat pocket or an accessory analog gauge with a sender touching the back of the cylinder head?
    -----


    A Technical troubleshooter possessing more tools than talent !
    Reply With Quote Reply With Quote
  3. donpilot
    donpilot is online now
    Member
    Join Date
    Dec 2006
    Location
    mt washington ky
    Posts
    2,649
    #3 05-04-2017, 06:40 PM
    Quote Originally Posted by SEAHORSE View Post
    How are you measuring it? A digital accurate infrared temp gun on the thermostat pocket or an accessory analog gauge with a sender touching the back of the cylinder head?
    Marine water pressure and head temp gauge. Just curious if warm idle and cool running are normal.
    Reply With Quote Reply With Quote
  4. SEAHORSE
    SEAHORSE is offline
    Moderator SEAHORSE's Avatar
    Join Date
    Jun 2004
    Posts
    9,638
    #4 05-04-2017, 07:03 PM
    Quote Originally Posted by donpilot View Post
    Marine water pressure and head temp gauge. Just curious if warm idle and cool running are normal.
    That it is.
    -----


    A Technical troubleshooter possessing more tools than talent !
    Reply With Quote Reply With Quote
  5. mrc.in.wi
    mrc.in.wi is offline
    Banned
    Join Date
    Mar 2014
    Location
    Sturtevant, WI
    Posts
    14,584
    #5 05-05-2017, 12:43 PM
    When I installed my water pressure gauge I learned why they say "Run it like a scalded ape".
    On a hot day idle I'm 155°-160°
    WOT 120°
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »