Outbehindthebarn Posted December 24, 2016 Share Posted December 24, 2016 Can you simply replace a 'air only' tip turbine with a water/air-cooled version? Or is there some limiting factor. . . like a water port in the block or something...? Quote Fun is what they fine you for!My name is Bob Buckman sir,. . . and I hate truckers. Link to comment Share on other sites More sharing options...
fjh Posted December 24, 2016 Share Posted December 24, 2016 What HP Is your engine? the water over air Usually came with a 350! Sorry Can't remember how it was plumbed! I Don't really see the benefit anyway! Quote Link to comment Share on other sites More sharing options...
fjh Posted December 24, 2016 Share Posted December 24, 2016 What HP Is your engine? the water over air Usually came with a 350! Sorry Can't remember how it was plumbed! I Don't really see the benefit anyway! Quote Link to comment Share on other sites More sharing options...
41chevy Posted December 24, 2016 Share Posted December 24, 2016 (edited) Feed from water pump to charge cooler and return line was also near the water pump. I can't fine the MACK exploded parts diagram right now for it. From what I recall the 320 and the 350 h.p. engines aside from the 40/60% Water/ Air Charge cooler also had a bigger turbo's. 300 h.p. , 300 + (320 h.p.) and 350 h.p. Paul Edited December 24, 2016 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
blackdog2 Posted December 24, 2016 Share Posted December 24, 2016 Diff errant water pump & oil cooler housing hard to get parts & hoses 1 Quote Ed Link to comment Share on other sites More sharing options...
dek1581 Posted December 24, 2016 Share Posted December 24, 2016 hey paul I saw some engines for sale. one is a 676 with tip turbine (I assume 285 hp) and another 676 with tip turbine (but 350 hp). is this tip turbine the forerunner to the charge air cooler but without the additional radiator? Quote Link to comment Share on other sites More sharing options...
blackdog2 Posted December 24, 2016 Share Posted December 24, 2016 My Mack parts dealer Courvilles of Montville ct had to go to museum to get part #s for Paul Roncetti u-model with that set up Quote Ed Link to comment Share on other sites More sharing options...
Outbehindthebarn Posted December 24, 2016 Author Share Posted December 24, 2016 I was just thinking about getting the 'most' out of a 285hp in a B model... You guys don't believe there is much benefit to the water jacket??? Quote Fun is what they fine you for!My name is Bob Buckman sir,. . . and I hate truckers. Link to comment Share on other sites More sharing options...
blackdog2 Posted December 24, 2016 Share Posted December 24, 2016 You want cold air not hot air !!!!!!!!!!! better off with a dash fan Quote Ed Link to comment Share on other sites More sharing options...
fjh Posted December 24, 2016 Share Posted December 24, 2016 your 285 Air to air will work just fine in my opinion they took it right up to 315 with that set up! 1 Quote Link to comment Share on other sites More sharing options...
41chevy Posted December 24, 2016 Share Posted December 24, 2016 6 hours ago, dek1581 said: hey paul I saw some engines for sale. one is a 676 with tip turbine (I assume 285 hp) and another 676 with tip turbine (but 350 hp). is this tip turbine the forerunner to the charge air cooler but without the additional radiator? The charge air cooler is mounted on the engine instead of the radiator.. I was told by a MACK Museum person that it was mounted on the engine to not add length to the nose for the old bridge formula. The 285 is air to air and the 350 is water/air to air Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
dek1581 Posted December 25, 2016 Share Posted December 25, 2016 ok so you clarified one thing for this new guy but you added a wrinkle. what is this bridge formula that you speak of? AND MERRY CHRISTMAS BY THE WAY! Quote Link to comment Share on other sites More sharing options...
TeamsterGrrrl Posted December 25, 2016 Share Posted December 25, 2016 https://en.wikipedia.org/wiki/Federal_Bridge_Gross_Weight_Formula Not as big an issue as it used to be, but back when we had tight overall length limits it was often necessary to have axles as close to the end of the vehicle as possible to run legal at the weight limits. Quote Link to comment Share on other sites More sharing options...
41chevy Posted December 25, 2016 Share Posted December 25, 2016 The whole design has to do with some of the bridge laws out west. They would count the bumper to back of a cab as a dimension that must be a certain length. The normal mount of the bumper on any Mack is usually mounted out from the grill. But for some reason the bumpers sticking out ahead of the grill was taken into the bridge law formula in some states. So the engine mounted inter cooler was designed. Paul Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
57 bcr Posted January 10, 2017 Share Posted January 10, 2017 Also the engine mounted intercooler(aka-"Cool Power")was introduced in '73. The CMCAC (chassis mounted çharge air cooled),was introduced around '81. The "tip-turbine" engines hung around a while longer,in vocational trucks. Like Paul & TeamsterGrrrl noted,for the Western Bridge Formula. Al 2 Quote IF YOU BOUGHT IT, A TRUCK BROUGHT IT..AND WHEN YOU'RE DONE WITH IT, A TRUCK WILL HAUL IT AWAY!!! Big John Trimble,WRVA Link to comment Share on other sites More sharing options...
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