engine help

Mack engines lacked the power and fuel economy big time, this was before EGR. They had cool sounding jakes though, I'll say that. What company are you working for if you don't mind me asking? You can PM me. DO they have an age requirement on the tractor? Do they pay mileage or percentage?

I wouldn't own anything other than a Series 60. N14 was a decent motor but the Series 60 got the best fuel, cheaper to maintain and sounded way better. CAT motors, they have their own fan club to, but when I worked at Ryder they didn't quite get the fuel economy and tended to use quite a bit of oil.

 

Mack E7 is a good motor as long as that Bosch injection pump is not hanging off the right side which is late 98 and on. Mine got poor mpg's ( 5 ) but the lil gal humped 50 grand down the highway with ease.

The E7 has a weak oil pump by design...weak as in didn't push enough oil up to the valve train and caused warranty issues. Parts are expensive and proprietary. Many things have to come from Mack and few outsiders stock much for them.

I would love a B Cat but can't afford it. Wouldn't own a C12 or 13...or a 31 series or a 33 series. My buddies have some issues with the TT C-15.

I currently own a ISM 425. Good motor, plenty of parts and everybody works on them. Stay out of it and she'll stay in the 6 mpg range. man handle it and it's 5. I own it because it came with the truck, only reason.

12.7 would be my choice. Good solid gal, plenty of parts and anybody can work on it.

JMO

 

Actually the earliest cat motor 1693 come out of a scraper or wheel loader. 343D was the industrial version. Early A models were offered both in a DI and precombustion. Earlier cat motors were hit and miss. Had a lot of 1693s blow up but they were used to building a motor that turned 900rpm not 2100. They really nailed it with the B model. Still one of my favorite motors if you know somebody who can play with one. Still to this day one of the only motors you can take from 425 to 515 with 15 minutes, a crescent wrench, and a screwdriver...3 turns on the screw run it down the road long as the pyro don't get above 900 give her 3 more turns set the torque screw and go.

If you really want her to run find an old timer...that's a little deeper in my bag of tricks than I believe the forum will allow .WWasn't like a cummapart where you had to change buttons in the fuel pumps, and they were and still are cheaper to overhaul than an old 855 don't have to get parts overnighted form Germany either.

A 9 year old can overhaul a detroit. They're simple basic pull decent fuel milage and they're cheap. Won't make the power of a CAT or a CUMMINS but they're a good running motor. I run yellow motors its a love hate relationship, but then again I've got a Cummins in my pickup and I've cussed that motor more than I've ever cussed one of my cats. To each their own I guess. I've always said only thing a Cummins was good for was hanging on the end of s chain for a boat anchor. I can't stand a bulldog but I'd run an old 500 E9 for I bought a red motor.

 

nothing wrong with a e7 and there a million mile motor cam issues have been fixed by now. 460's are weak unless its a 460p or 460xt there 500hp 427 get you the best torque and fuel mileage. E9's are becoming very rare to run across now few more years you only see them at truck pulls and hear about them in history books