Mike Posted February 3, 2009 Share Posted February 3, 2009 For the 673 engine what pressure cap poundage was or is used for the 673 with standard 48 quart radiator? I bought a 7lb. as was told by the NAPA truck parts person. The MACK Dealer said 10lb. Can someone clear this up for me?Thanksmike Quote Link to comment https://www.bigmacktrucks.com/topic/8206-b-model-radiator-cap/ Share on other sites More sharing options...
theakerstwo Posted February 3, 2009 Share Posted February 3, 2009 For the 673 engine what pressure cap poundage was or is used for the 673 with standard 48 quart radiator? I bought a 7lb. as was told by the NAPA truck parts person. The MACK Dealer said 10lb. Can someone clear this up for me?Thanksmike The B model back in the mid 60 used a 5 or 7 lb cap. The 10 lb will not hurt the engine but may be too much for the rad. and heater. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/8206-b-model-radiator-cap/#findComment-30281 Share on other sites More sharing options...
Rob Posted February 4, 2009 Share Posted February 4, 2009 For the 673 engine what pressure cap poundage was or is used for the 673 with standard 48 quart radiator? I bought a 7lb. as was told by the NAPA truck parts person. The MACK Dealer said 10lb. Can someone clear this up for me?ThanksmikeI'll bet a 37 pound radiator cap would keep that coolant in there. Just place a 30 pound cinder block on top of the 7 pound radiator cap, and your problem is solved.See, the solution is quite easy.Hope you find this solution useful.If it were my B model, I think I'd use the seven pound cap and be done with it.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/8206-b-model-radiator-cap/#findComment-30290 Share on other sites More sharing options...
Mike Posted February 4, 2009 Author Share Posted February 4, 2009 Rob,You would be great behind a parts counter at the local Auto Zone. And I also should build a fire under the truck to get the coolant and oil hot so it will start easier. LOL.............. Rob thats why we LOVE you when you come up with the best solutions. LOL.......... I'll post the results much later! Tell Momma hello from the BOYS...... LOLmike Quote Link to comment https://www.bigmacktrucks.com/topic/8206-b-model-radiator-cap/#findComment-30299 Share on other sites More sharing options...
Rob Posted February 4, 2009 Share Posted February 4, 2009 Rob,You would be great behind a parts counter at the local Auto Zone.mikeThat solution uses the same mentality that the average AutoZone employee possesses. I don't "darken their doorstep" because you only get paid to do a job once. Re-doing the same job because parts fail prematurely is the reasoning behind that statement.Rob Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/8206-b-model-radiator-cap/#findComment-30302 Share on other sites More sharing options...
Mike Posted February 4, 2009 Author Share Posted February 4, 2009 Now Rob you know I liked that answer you gave me. With me something to do with the water around here...... maybe too much limestone in my coffee must go to my head. LOL mike Quote Link to comment https://www.bigmacktrucks.com/topic/8206-b-model-radiator-cap/#findComment-30304 Share on other sites More sharing options...
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