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Cold running KL

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trebot
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Cold running KL

Post by trebot » Sun Jun 14, 2020 5:39 am

Have a KL motor in 18' Continental. It runs cold: never gets over 105 degrees. I have digital temp guage which I've checked and its accurate. Motor runs fine (50 hours on total rebuild), but think it should run warmer. Thought about putting restriction in water outlet on cylinder head, but thought I'd ask for advice first. Thanks

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JimF
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Re: Cold running KL

Post by JimF » Sun Jun 14, 2020 9:01 am

These engines have no thermostats so engine temperature depends on the lake temperature. I think I have seen an added thermostat but these engines seem to run just fine and forever without one.
1930 Chris-Craft Model 100 20' "MOXIE"
1940 Chris-Craft Red and White 25' "Old Paint"
1946 Chris-Craft Sportsman 25' "CinCity"

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mbigpops
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Re: Cold running KL

Post by mbigpops » Mon Jun 15, 2020 2:25 pm

Doesn't sound right. My KL runs about 150 degrees with a digital thermometer on the head.

Where are you measuring the temperature ?

Mark
1953 CC Rocket Runabout "Rocket Man"

trebot
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Location: Lexington, Michigan
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Re: Cold running KL

Post by trebot » Tue Jun 16, 2020 7:21 pm

Measuring using digital. Using same cyl head source as stock mechanical guage. Stock sending unit broke, so went digital.

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