sodly Posted October 20, 2016 Share Posted October 20, 2016 Looking at a Superliner with an MVT 475 engine from the factory that has since been downgraded to a 400 big cam 3. I'm not very familiar with the 475. I know it was twin-turbo and had some sort of variable valve timing. I get the impression it was a pretty big horse in its day. Sure never seen one in a Superliner. Has anyone else? I'm thinking this was a rare engine for a Mack. Can anyone shed any light on the MVT 475 engine? Or, more importantly, how it differed from the BC3 400 that it has been converted to? What's required to convert one? From what I've read, it sounds like it was a fairly common conversion. I know they made a bazillion 400 Cummins so I presume that's a good engine to have. Any opinions? Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/ Share on other sites More sharing options...
carlotpilot Posted October 20, 2016 Share Posted October 20, 2016 that engine was a real ass kicker when every thing was working right. i have tuned a few of them up in the past but has been a long time ago i still have some info on them stored away . to change one back required removing the mechanical variable timing setup along with injectors and doing away with one of the turbos im` thinking the cam timing had to be changed also Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349352 Share on other sites More sharing options...
41chevy Posted October 20, 2016 Share Posted October 20, 2016 Most were changed over during rebuilds, I recall they were hard on cams, poor fuel economy and hard starting when it got cold out. 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 https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349356 Share on other sites More sharing options...
sodly Posted October 21, 2016 Author Share Posted October 21, 2016 40 minutes ago, 41chevy said: Most were changed over during rebuilds, I recall they were hard on cams, poor fuel economy and hard starting when it got cold out. Would those traits still be true of one converted to an BC3 400? Still hard cold starting and poor MPGs? Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349363 Share on other sites More sharing options...
41chevy Posted October 21, 2016 Share Posted October 21, 2016 16 hours ago, sodly said: Would those traits still be true of one converted to an BC3 400? Still hard cold starting and poor MPGs? No. The Variable cam timing being eliminated and the lower fuel pressure make starting cold easier and end the white smoke on cold start and difficulty starting at 40 degrees or below fuel mileage increase and the premature cam wear is eliminated. 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 https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349461 Share on other sites More sharing options...
sodly Posted October 21, 2016 Author Share Posted October 21, 2016 So it sounds like the converted BC3 400 should be a good engine, no? Has anyone else seen a 475 in a Superliner? So far I've only ever heard of one other from the factory (but maybe I'm outta touch on this). And I've never seen one in the flesh. Anyone have any pics? Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349468 Share on other sites More sharing options...
sodly Posted October 24, 2016 Author Share Posted October 24, 2016 Does anyone know what the model number of a 475 Cummins would be? 7xx?? Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349736 Share on other sites More sharing options...
carlotpilot Posted October 24, 2016 Share Posted October 24, 2016 (edited) model would be -ntc475 - has three listed cpls -330-518-586 - don`t have a pic available at the moment go to you tube enter 475 cummins ben jones watch it run Edited October 24, 2016 by carlotpilot Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349737 Share on other sites More sharing options...
Back In Black Pulling Posted October 24, 2016 Share Posted October 24, 2016 Think he meant trk model? Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349793 Share on other sites More sharing options...
j hancock Posted October 24, 2016 Share Posted October 24, 2016 If this was done by the factory, have the seller of the Superliner give you the door tag info and you will have the code for the engine. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349800 Share on other sites More sharing options...
sodly Posted October 25, 2016 Author Share Posted October 25, 2016 4 hours ago, j hancock said: If this was done by the factory, have the seller of the Superliner give you the door tag info and you will have the code for the engine. Yes, it is apparently a factory install. But just to be sure I wanted to make sure the number jibed with the correct number from Mack. I have no idea which model designation that 475 would've been. Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349839 Share on other sites More sharing options...
Superdog Posted October 25, 2016 Share Posted October 25, 2016 RWS762,I think they made 9, 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349843 Share on other sites More sharing options...
j hancock Posted October 25, 2016 Share Posted October 25, 2016 "Slingblade" said he has a RWS-762 475. http://www.bigmacktrucks.com/topic/36165-superliner-with-kt-cummins/#comment-250749 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-349860 Share on other sites More sharing options...
sodly Posted October 27, 2016 Author Share Posted October 27, 2016 Yes, he does. And he told me he works it 12 hours a day! I would think it's gotta be the only one in existence still in daily use, right? So was the NTC475 the biggest factory HP you could spec in an RW in 1985? Wasn't the E9 still at 400 (or 450) back then and the KT at 450 (since you couldn't order the KT600 in the RW from the factory). Not sure which had the most torque. Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-350043 Share on other sites More sharing options...
sodly Posted October 27, 2016 Author Share Posted October 27, 2016 On 10/24/2016 at 11:34 PM, Superdog said: RWS762,I think they made 9, Mike does that include Superliner 1 and 2s? Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-350044 Share on other sites More sharing options...
j hancock Posted October 27, 2016 Share Posted October 27, 2016 The E9-500 was available in 1985. The rating was 500 @ 1900 rpm and 1603 lb. ft. @ 1350 rpm. I don't have any Cummins info. Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-350095 Share on other sites More sharing options...
Superdog Posted October 28, 2016 Share Posted October 28, 2016 On 10/26/2016 at 8:33 PM, sodly said: Mike does that include Superliner 1 and 2s? no,just 1's Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-350169 Share on other sites More sharing options...
sodly Posted October 31, 2016 Author Share Posted October 31, 2016 Any idea on the count of Cummins 475-powered Superliner 2s? Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-350467 Share on other sites More sharing options...
Yoos Brothers Construction Posted November 4, 2016 Share Posted November 4, 2016 On 10/30/2016 at 9:44 PM, sodly said: Any idea on the count of Cummins 475-powered Superliner 2s? I don't believe any were put in Superliner 2s. Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-350924 Share on other sites More sharing options...
sodly Posted November 5, 2016 Author Share Posted November 5, 2016 I know of one in a Super 2 for sure so I'm guessing there were more. Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-351033 Share on other sites More sharing options...
Brycee23 Posted November 6, 2016 Share Posted November 6, 2016 I had an 1985 359 with a factory 475 and it started and ran great had power for days! sold it last year to a local farmer he loves it!!! Quote Link to comment https://www.bigmacktrucks.com/topic/47358-475-cummins-twin-turbo/#findComment-351135 Share on other sites More sharing options...
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