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Benefits of Racing with engine cold

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Old Apr 23, 2001 | 07:35 PM
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Stormshadow GTA's Avatar
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From: British Columbia,Canada
Benefits of Racing with engine cold

My car runs best when i start it up in the morning so i was thinking about pushing to the staging area then start it up and go.but that means i will be in open loop i think it is that one,but i feels way more powerful.
Any Thoughts on benefits and downfalls.

Thanks
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Old Apr 23, 2001 | 08:26 PM
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AlkyIROC's Avatar
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
It has to be warm enough for the metal to expand and the rings to seat. Usually you want to be at the starting line at 160 degrees.
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Old Apr 24, 2001 | 01:22 AM
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QwkTrip's Avatar
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
It's bad news for your motor to run it with cold oil. The oiling system is designed to be effective when the oil is at or near normal operating temperature. Run your engine cold and you'll accelerate engine wear drastically.

Second point about your computer being in open loop mode. Any time you punch the throttle down your computer will go into open loop mode and read data directly from the fuel and spark maps. When you run cold there is extra fuel being injected to make the engine run richer to compensate for the cold condition. It's measured off the coolant temperature and is a compensation factor to make the engine run well. As the coolant temp reaches normal operating temperature the computer will gradually decrease the fuel supply until you are running in a normal condition. Basically, the moral of the story is do what the last guy said and run at about 160 degrees coolant temp
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