Vegas Teacher Posted January 26, 2017 Report Share Posted January 26, 2017 Please educate the teacher............ What is the difference between the D16 and D13 engine, in the volvo 780 Semi's? Also how do I know if the truck has split differentials or differential locks for the front and rear differential, if it does not say it in the description? Is there a way by looking at pictures of the dash to figure this out? How much is repair on the APU unit? Saw few trucks with APU's but, when I called, I was told they did not work. Last but not least, this past Sunday I met up with some of the people from the forum in Las Vegas and it was really nice to put names and faces together. ATV, Larry & Donna and Vegas Flyer - All great people and very nice to meet them, I had a great time, I got to ride in a very nice 780 and learned a lot. I now have more questions as you can see but my knowledge level is going up. Later, Vegas Teacher: Cory Ossana P.S. Attached is a picture of me so you all can see what I look like. Link to comment Share on other sites More sharing options...
jeffw Posted January 26, 2017 Report Share Posted January 26, 2017 What is the difference between the D16 and D13 engine, in the volvo 780 Semi's? The difference is about 3. :-) The number is the engine size (displacement) in liters. So a 13L engine vs a 16L engine. I heard early-on the D16 had a number of problems, particularly with the high-pressure coolant system it used. I believe they moved away from that at some point. The D16 is quite a bit heavier than the D12/D13--front axle weights can be an issue when you single. The D16 has been discontinued ( http://www.overdriveonline.com/volvo-halts-production-of-vnx-tractor-nixes-d16-engine/ ) as of a few days ago. There are a few folks on here with D16s. Hopefully they'll pipe in. 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
NoDirectionHome Posted January 26, 2017 Report Share Posted January 26, 2017 3 liters lol Ok, enough bad jokes. the 16 liter was discontinued yesterday by Mack and Volvo. It has not been a good engine from a reliability standpoint and I have my thoughts on why that is. They do cause trucks with them to be less expensive than 13 or 12 liter engines. Secondly they weigh an enormous amount more than the 13 so are always right on the limit for front axle weight. Even dealers will steer you away from one. I think that speaks volumes. "There are No Experts, Do the Math!" 2014 Freightliner Cascadia DD16 600hp 1850ft-lb 18spd 3.31 260"wb SpaceCraft S-470 SKP #131740 Link to comment Share on other sites More sharing options...
NoDirectionHome Posted January 26, 2017 Report Share Posted January 26, 2017 Dang Jeff... ya snuck in there while i was two finger typ'in! "There are No Experts, Do the Math!" 2014 Freightliner Cascadia DD16 600hp 1850ft-lb 18spd 3.31 260"wb SpaceCraft S-470 SKP #131740 Link to comment Share on other sites More sharing options...
Jack Mayer Posted January 26, 2017 Report Share Posted January 26, 2017 Weights: D13 2676 lbs, D16 3134 lbs. Difference is 456 lbs. Numbers are Volvo's numbers. I've owned both. The D16 sounds quite a bit different. The D13 is quite a bit quieter, especially an XE, which runs at very low RPMs. But neither are obnoxiously noisy. The D16 is likely better in BIG mountains. Nothing really beats the displacement. But that is arguable. My D16 was very reliable. D16 IS harder to work on in some situations, since it is pretty much shoehorned into the engine compartment. I've been told the D16 sits a little farther back in the cab, but I cannot really notice that. Given a choice on an EQUAL truck with the SAME HP/Torque I'd take the D13. And I did. Jack & Danielle Mayer #60376 Lifetime Member Living on the road since 2000PLEASE no PM's. Email me. jackdanmayer AT gmail 2016 DRV Houston 44' 5er (we still have it) 2022 New Horizons 43' 5er 2016 Itasca 27N 28' motorhome 2019 Volvo 860, D13 455/1850, 236" wb, I-Shift, battery-based APU No truck at the moment - we use one of our demo units 2016 smart Passion, piggyback on the truck -------------------------------------------------------------------------See our website for info on New Horizons 5th wheels, HDTs as tow vehicles, communications on the road, and use of solar powerwww.jackdanmayer.com Principal in RVH Lifestyles. RVH-Lifestyles.com Link to comment Share on other sites More sharing options...
Stan Wright Posted January 27, 2017 Report Share Posted January 27, 2017 The switch on the left is for a differential lock. The right switch is for the interaxle lock. Link to comment Share on other sites More sharing options...
Stan Wright Posted January 27, 2017 Report Share Posted January 27, 2017 Here is the actuator for my rear differential lock. My truck wasn't advertised with a differential lock but it was a nice surprise. Link to comment Share on other sites More sharing options...
alan0043 Posted January 27, 2017 Report Share Posted January 27, 2017 Hi Everyone, I have another question. I there a difference between the D12 and D13 when it comes to internal parts ? Is the D13 using the same block as the D12 ? I know that Volvo stopped building the D12. Al 2012 Volvo VNL 630 w/ I-Shift; D13 engine; " Veeger " Redwood, model 3401R ; 5th Wheel Trailer, " Dead Wood " 2006 Smart Car " Killer Frog " Link to comment Share on other sites More sharing options...
forxlr8n Posted January 27, 2017 Report Share Posted January 27, 2017 The D-16 started out as a 625hp engine in the Cowboy truck. As stated they had some issues. "If you can not measure it, you can not improve it." Lord Kelvin Link to comment Share on other sites More sharing options...
jeffw Posted January 27, 2017 Report Share Posted January 27, 2017 The D12 bore/stroke is 5.16 x 5.90 (131 X 150) (in/mm) The D13 bore/stroke is 5.16 x 6.22 (131 x 158) (in/mm) So it looks like the bore is the same. The added displacement came from a longer stroke. Probably a similar block. D12 was only an EGR engine for emissions. The later D13 used DPF/SCR and likely ran hotter, so likely they made some changes. 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
rickeieio Posted January 27, 2017 Report Share Posted January 27, 2017 The D-16 started out as a 625hp engine in the Cowboy truck. As stated they had some issues. By "Cowboy", do you mean the 880? KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
forxlr8n Posted January 28, 2017 Report Share Posted January 28, 2017 By "Cowboy", do you mean the 880? Yes, they were a nightmare to build in the beginning "If you can not measure it, you can not improve it." Lord Kelvin Link to comment Share on other sites More sharing options...
beyerjf Posted January 28, 2017 Report Share Posted January 28, 2017 We have maybe a dozen drivers in our fleet that have had Volvo D-16's in their trucks, most of them purchased new. All but one has had many more problems of all sorts leading to maintenance costs easily double the much more reliable D-13. One of the drivers was forced into bankruptcy because of the extensive downtime while repairs were being made under warranty. Several others are quite literally stuck with their present tractors because Volvo dealers in particular and others will not even consider a trade. Jeff Beyer temporarily retired from Trailer Transit 2000 Freightliner Argosy Cabover 2008 Work and Play 34FK Homebase NW Indiana, no longer full time Link to comment Share on other sites More sharing options...
NoDirectionHome Posted January 28, 2017 Report Share Posted January 28, 2017 FWIW, the 2017 MY Volvo offers the D11 and the 14spd I-Shift with crawler gears. They consider the 6x2 with D11 the most efficient set-up for most linehaul operations. Everything old is new again. "There are No Experts, Do the Math!" 2014 Freightliner Cascadia DD16 600hp 1850ft-lb 18spd 3.31 260"wb SpaceCraft S-470 SKP #131740 Link to comment Share on other sites More sharing options...
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