Popular Post kscarbel Posted February 26, 2013 Popular Post Share Posted February 26, 2013 The day you could hear a pin drop at Cummins and Detroit Diesel. 9 Quote Link to comment Share on other sites More sharing options...
Timothy Maikshilo Posted February 26, 2013 Share Posted February 26, 2013 Great post! Quote Link to comment Share on other sites More sharing options...
umodelnut Posted February 26, 2013 Share Posted February 26, 2013 Heck yea. Best motor in the world. Love em. Thanks for posting. Quote Link to comment Share on other sites More sharing options...
39 Baby Mack Posted February 26, 2013 Share Posted February 26, 2013 The day you could hear a pin drop at Cummins and Detroit Diesel.Thanks to Win Pelizzoni and Walter M. May!!Ron 2 Quote Link to comment Share on other sites More sharing options...
fifth wheel Posted February 26, 2013 Share Posted February 26, 2013 Don't remember that time, but do remember the introduction of the intercooling in the early 70's, I didn't pay to much attention to that at that time either, definitely put Mack up front.FW Quote Link to comment Share on other sites More sharing options...
Bigdogtrucker Posted February 26, 2013 Share Posted February 26, 2013 Anyone know when the 250 Thermodyne come out? Quote Link to comment Share on other sites More sharing options...
Green Dash Posted February 26, 2013 Share Posted February 26, 2013 The day you could hear a pin drop at Cummins and Detroit Diesel. Quote Jim Link to comment Share on other sites More sharing options...
Superdog Posted February 26, 2013 Share Posted February 26, 2013 Don't remember that time, but do remember the introduction of the intercooling in the early 70's, I didn't pay to much attention to that at that time either, definitely put Mack up front.FWDad had a '72 F795 and Grandpa had '68 F685 at the time,both straightpiped.Our dealer let us have one of the "300 Series" gold demonstrators for a week,thought it sounded like a jet plane. 1 Quote Link to comment Share on other sites More sharing options...
Superdog Posted February 26, 2013 Share Posted February 26, 2013 Anyone know when the 250 Thermodyne come out?'62 or '63 Quote Link to comment Share on other sites More sharing options...
Popular Post 39 Baby Mack Posted February 26, 2013 Popular Post Share Posted February 26, 2013 Used to love to take our "F" models with 237's (no muffler) through the Baltimore Harbor Tunnel!Leave off the accelerator and then mash it down again, could damn near feel the tiles comin' loose on the inside of the tunnel!Ron 5 Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted February 27, 2013 Share Posted February 27, 2013 Anyone know when the 250 Thermodyne come out?The 250 came out same time as the 237 and that would be in late 65 or 66.Before the 250 the turbo engine was a 205 and did not have the 20 bolt head or the oil cooled pistons. I was working at the mack dealer then.I could be wrong cause that was long time ago. Quote glenn akers Link to comment Share on other sites More sharing options...
57 bcr Posted February 27, 2013 Share Posted February 27, 2013 Thanks to Win Pellizoni and Walter M. May!!RonYou took the words right out of my mouth,Ron! Not to mention the "go ahead with it" from Mr. Hansen Al 1 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...
HK Trucking Posted February 27, 2013 Share Posted February 27, 2013 Anyone know when the 250 Thermodyne come out?The ENDT673C 250 hp Thermodyne was first offered in 68 or 69 I believe. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment Share on other sites More sharing options...
HK Trucking Posted February 27, 2013 Share Posted February 27, 2013 The 250 came out same time as the 237 and that would be in late 65 or 66.Before the 250 the turbo engine was a 205 and did not have the 20 bolt head or the oil cooled pistons. I was working at the mack dealer then.I could be wrong cause that was long time ago.The ENDT673B 225hp Thermodyne was in between the 205 & the 250. It had the piston coolers. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment Share on other sites More sharing options...
1958 F.W.D. Posted February 27, 2013 Share Posted February 27, 2013 If anyone knows the name Jim Winsor (Chilton Publishing- Heavy Duty Trucking) myself and my father are good friends with him. He lives in the suburban Philadelphia area and we have lunch or dinner with him at least twice a year. I have a great story about when the first Maxidyne and Walter May having Jim test drive a tractor when it came out of the R & D shop (that we all now know as the Customer Center) in Allentown. I will have to write it up and post it here sometime. Quote TWO STROKES ARE FOR GARDEN TOOLS Link to comment Share on other sites More sharing options...
JumperAndSon Posted February 27, 2013 Share Posted February 27, 2013 The day you could hear a pin drop at Cummins and Detroit Diesel.Okay let me get something straight here. I'm pretty sure that if you were near a Detroit Diesel, you could not hear a pin drop....Ben 1 Quote Link to comment Share on other sites More sharing options...
57 bcr Posted February 27, 2013 Share Posted February 27, 2013 If anyone knows the name Jim Winsor (Chilton Publishing- Heavy Duty Trucking) myself and my father are good friends with him. He lives in the suburban Philadelphia area and we have lunch or dinner with him at least twice a year. I have a great story about when the first Maxidyne and Walter May having Jim test drive a tractor when it came out of the R & D shop (that we all now know as the Customer Center) in Allentown. I will have to write it up and post it here sometime.Sure do remember him,read his columns and Tom Berg's especially when they did road tests.Looking forward to the story! 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...
57 bcr Posted February 27, 2013 Share Posted February 27, 2013 Okay let me get something straight here. I'm pretty sure that if you were near a Detroit Diesel, you could not hear a pin drop....Ben (all out of likes,Ben) Al 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...
farmer52 Posted February 27, 2013 Share Posted February 27, 2013 If anyone knows the name Jim Winsor (Chilton Publishing- Heavy Duty Trucking) myself and my father are good friends with him. He lives in the suburban Philadelphia area and we have lunch or dinner with him at least twice a year. I have a great story about when the first Maxidyne and Walter May having Jim test drive a tractor when it came out of the R & D shop (that we all now know as the Customer Center) in Allentown. I will have to write it up and post it here sometime.Next time you see Jim, tell him Ken (from Lubrizol) says hello! And we miss him at TMC!I talked to Tom Berg on the phone Tuesday and will see him at TMC in March.Jim and Tom are both good guys! Quote Ken PRR Country and Charter member of the "Mack Pack" Link to comment Share on other sites More sharing options...
jeffmackb Posted February 27, 2013 Share Posted February 27, 2013 Anyone know when the 250 Thermodyne come out?The 250 Thermodyne is the ENDT673C, came out about 65/66. Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted February 27, 2013 Share Posted February 27, 2013 The ENDT673B 225hp Thermodyne was in between the 205 & the 250. It had the piston coolers.Yes it was the 225 HP just a fuel setting and it would be a 250 HP Quote glenn akers Link to comment Share on other sites More sharing options...
theakerstwo Posted February 27, 2013 Share Posted February 27, 2013 When i think about it more i worked for mack 1965,66,67,68 and the B model was still in production when i started there and i remenber seein a ENDT 673b or c in them but did not ever remenber seeing a maxidyn in the B so the thermodyne may have came out a year eary than the maxidyl witch would be 65 for the thermodyn and 66 for the maxidyn.The best i remnebr. Quote glenn akers Link to comment Share on other sites More sharing options...
jeffmackb Posted February 27, 2013 Share Posted February 27, 2013 The ENDT673B 225hp Thermodyne was in between the 205 & the 250. It had the piston coolers.Also, the 205 was a different engine, it was an END673T. I think max Hp was about 211, same as the END711. Quote Link to comment Share on other sites More sharing options...
Maddog13407 Posted February 27, 2013 Share Posted February 27, 2013 yup and an END673T was nothin compared to the ENDT673B or C engines Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted February 27, 2013 Share Posted February 27, 2013 The end673T had 18 9/16 head bolts. The end T673 had 20 5/8 studs and oil cooler nozzles for the piston cooling. The maxidyn was same way but had a fire ring on top of liner and differnt governor on the sam fuel pump.And it was painted gold. 1 Quote glenn akers Link to comment Share on other sites More sharing options...
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