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Front mounted coolant overflow?
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<blockquote data-quote="Beerj" data-source="post: 719166" data-attributes="member: 10035"><p>Well I think I've done all I can realistically do at this point. After running the steam port back to the rad and adding a bleeder above the water pump outlet, I decided to try it without a thermostat since there was mixed reviews on if it cools better. In my case, no. At idle it was excellent, held around 155°. Throttling up it would drop to about 145° but then climb until I let off. I never let it get above 230°. </p><p></p><p>After some more research it seems that at least these water pumps work better with some restriction. Lack-of can apparently cause cavitation which reduces flow considerably. I suppose that's why some guys just run restrictor washers. So today I threw in the original 180° thermostat that I had in. I gotta say, having that bleeder above the pump made getting the air out a breeze. No huge burps that spit out a half gallon of coolant on their way out. She now idles consistently between 177.8° and 179.6°, all the time, to nearly the exact same decimal. Throttling up, it drops as low as 168° and never climbs above 170° until I let off. </p><p></p><p>So in conclusion, I'd say things are looking good although it's hard to say if rerouting the steam port or adding the bleeder is the hero. Either way, I'd strongly reccomend the bleeder for at least the benefit of being able to evacuate any air pockets that may develop. At this point there really isn't anything to do except load it on the trailer and hope she stays cool at Harlan next month.</p></blockquote><p></p>
[QUOTE="Beerj, post: 719166, member: 10035"] Well I think I've done all I can realistically do at this point. After running the steam port back to the rad and adding a bleeder above the water pump outlet, I decided to try it without a thermostat since there was mixed reviews on if it cools better. In my case, no. At idle it was excellent, held around 155°. Throttling up it would drop to about 145° but then climb until I let off. I never let it get above 230°. After some more research it seems that at least these water pumps work better with some restriction. Lack-of can apparently cause cavitation which reduces flow considerably. I suppose that's why some guys just run restrictor washers. So today I threw in the original 180° thermostat that I had in. I gotta say, having that bleeder above the pump made getting the air out a breeze. No huge burps that spit out a half gallon of coolant on their way out. She now idles consistently between 177.8° and 179.6°, all the time, to nearly the exact same decimal. Throttling up, it drops as low as 168° and never climbs above 170° until I let off. So in conclusion, I'd say things are looking good although it's hard to say if rerouting the steam port or adding the bleeder is the hero. Either way, I'd strongly reccomend the bleeder for at least the benefit of being able to evacuate any air pockets that may develop. At this point there really isn't anything to do except load it on the trailer and hope she stays cool at Harlan next month. [/QUOTE]
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