| ft_irwin_73baja |
Sat Nov 27, 2004 5:20 pm |
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i ran across this in a different forum and thought some people in here might be interested...here you go
From the Gene Berg '95 Catalog/Tech Manual regarding non 'doghouse' oil coolers:
"Removing the inside the fan shroud oil cooler (through 1970) raised the temperature of the 3/4 head as much as 50 degrees F above normal. ..... Air pressure (flow) was drastically reduced at the head and increased at the lower part of the 3/4 cylinders. Even 1 and 2 temperature went up due to the lower restriction on 3 and 4. Further investigating inside the fan housing revealed that VW's air vortex's and directional vanes put the air in the exact locations needed at the correct velocity and that the cooler must be in place to direct the air over the cooler and along the top of the fan housing. This straightens it out to go down thru the head and cylinder fins with the highest efficiency. ..... The only thing that can cause overheated oil is an overheated head. Even if you cool the oil, the head temperature is still running far beyond normal as you never fixed the source of the overheating problem. ... If you absolutely must hang a cooler on your car, ADD IT to a full flow system (remember full flow comes from the pump) and maintain the stock cooler. Do not substitute it for the original." |
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