318 cooling question


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Posted by Cliff in SD on Monday, May 24, 2004 at 9:36AM :

Help. My M37 has a 318 that I have been using without problem for about 2 years, but when really hot out side and when running hard (2500-3000 RPM) it starts to get hot(210). So..I just put one of those little auxillary coolers in. It is in place of the heater,using the stock heater ports on the block and waterpump. The little radiator is mounted higher than the engine on the "headache rack". I was feeling all great about it until I noticed that it wasn't even warm after running the engine temp up to 190. There seems to be no pressure in the afferent or efferent hoses. Doesn't the water pump pump at enough preasure to do this. The radiator (the real one on the front of the truck)gets hot and seems to be working fine under most conditions. Sorry for the lengthy note, but trying to get to Iowa Rally this year. Thanks for any enlightenment. Cliff





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