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Re: Block heater, oil or water
[Re: rowin4]
#2486322
04/22/18 10:32 AM
04/22/18 10:32 AM
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Joined: Oct 2007
Posts: 4,210 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,210
New York
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True, but many have the ECM programmed to prevent WOT until water temperature is up.
Boffin Emeritus
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Re: Block heater, oil or water
[Re: rowin4]
#2486328
04/22/18 10:43 AM
04/22/18 10:43 AM
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Joined: Jan 2003
Posts: 6,392 nielsville, minn.
quickd100
master
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master
Joined: Jan 2003
Posts: 6,392
nielsville, minn.
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On my old 426 wedge Dyno mule there was a 20+ hp difference between cold oil and hot oil using 15/40. Warm the oil.
Last edited by quickd100; 04/22/18 10:43 AM.
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Re: Block heater, oil or water
[Re: quickd100]
#2486430
04/22/18 03:18 PM
04/22/18 03:18 PM
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Joined: Aug 2003
Posts: 43,285 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,285
Bend,OR USA
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On my old 426 wedge Dyno mule there was a 20+ hp difference between cold oil and hot oil using 15/40. Warm the oil. I did some oil temp testing on the first motor I dyno tested, I saw 8 HP gain from 130 F oil temps with straight 30 wt. oil to 170 F Later on I switch to 10w30Wt on a different engine and the same brand DTS dyno and saw 3 HP gain difference between 130F and 180 F On the next motor I built and dyno tested I switch to 5W20WT and saw no HP differences between 70F and 220 F oil temps
Last edited by Cab_Burge; 04/22/18 03:19 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Block heater, oil or water
[Re: rowin4]
#2486556
04/22/18 09:26 PM
04/22/18 09:26 PM
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Joined: Oct 2007
Posts: 4,210 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,210
New York
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Hot water rises, the "thermosyphon" effect allowed some small engines to work with a radiator above the jacket, but no pump.
Boffin Emeritus
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