|
|
Posted by john copeman ontario can. on Friday, February 22, 2008 at 08:39:44 :
In Reply to: Re: 4 wheeler power wagon posted by Tim Holloway on Thursday, February 21, 2008 at 23:34:57 :
for each pound pressure the rad cap has raise THE BOILING POINT of the coolant 4 degrees so if you put on a 10 pound cap use raise the boiling point of the coolant 40 degrees so the boiling point is now 252 Deg far...,now you say that you wagon runs a say 180 degrees and thats satisfactory so why increase the boiling point of the coolant because there are places inside the engine where the coolant can excede 300 degrees near the exhaust valve seats ... cylinder heads... top of the block ect. what lowers the coolant temp is circulation by the water pump from block to the rad ....also a good rated rad cap will prevent after boil.... which is when you shut down a hot engine and you bumping sounds from the rad this is harm full on the rad and hoses .. also i have seen a condition were boiling coolant will burn (theres a technical name) small holes through the cylinders at the hot spots (pin holes)and anti freeze will leak in to cylinders.. the other solution to boiling is anti feeze which can raise the boiling point... read the side of the anti freeze and it should give you a maximum freezing point -40 say and a boiling point of no less than 260 far, so you are protected some what for percolis, pin holes... but the rad cap you use varies much on the altitude you opperate all numbers ARE AT SEA LEVEL the high you go changes boiling points .... but the temperature gauge is is only giving a reading at its location not any where else in the cooling system if i had a choice to locate a sending unit it would be to the rear of the engine and high
Follow Ups: