We even tried to force the liner out with a floor jack assist from the bottom. Also anybody know what an inframe would cost ballpark? The only way to replace a lifter on an etech engine is to remove the camshaft. But on very stubborn liners, he said that they have had to use the welding rod method to persuade the liner to move. In its 300-horsepower spec, torque is 1,160 foot-pounds at 1,200 rpm. I got 860 on it now and i sure as hell dont regret not doing a full overhaul.
In the past i have seen rewelded cams with bad results but this sounds like a good process to me. Wound up contacting the local Mack mechanic. If you think the cam is damaged, you can have it reground. The second is a complete overhaul of the cylinder head. Cylinders were up, walls looked great, and it didnt use more than a gallon of oil on 10,000 miles. Does this sound like the roller, H ring, or Cam? Mack E7 Engine Technology Typical horsepower rating for the mack e7 is between 250-400 hp.
The valves are not removed from the head and the springs are not checked for tension. Is your Cylinder Head in it for the long haul? Tried the ice pack to help remove cylinder liner. You can also reach Tom Mann at 502-592-8415. Because of its relative popularity and quality performance over the years, Mack produced a total of 16 different versions of the E7 line. The Mack E7 Engine replaced the longstanding Mack e6 model and was produced for over 20 years. Talk about expensive f--- ups! All cylinder heads can be cleaned, pressure checked, and magnafluxed to check for cracks. All was well until we came upon a stubborn liner that has refused to give up it's place in the engine block.
Mack E-Tech engines are 6 cylinder multi-system cooled and range from Mack E-7 Engine in Truck360 to 500 hp. Low cylinder height doesnt seal the head gasket properly, and can cause premature failure of head gasket. The E7 engine series grew exceedingly popular since its introduction in 1988. At the lowest rating of 250 hp the mack e7 engine will put out 975 foot pounds of torque. The total power rating of the E7 was between 250 and 454 horsepower at 1,700 to 1,800 rpm. Evidently somebody put the ground clamp in a place where it allowed current to flow thru the main bearings.
If a step calls for a procedure that has already been described earlier in the manual, you will be referred to the section where the original procedure appeared. Not to be surprised if you found some other useful information apart from the listing items. If you need info on where I got them done, let me know and I will have to look for it. Seeing how you guys are talking about the cam and Hrings I have a push rod that does not spin it seems to fall into a pit when I try to spin it and only spins half way and stops. Need a little extra proof? Are you talking about the e7 or etec big differance on cam etec has rollers not saying it couldnt be done just dont know anyone that has had it done to a etec engine cam. Its causing the bridge on the valves to jump off. I belive that overhauls are only nessesary if you have failure in the cylinder, rods, or bearings.
Let one of these slip. I did one in my 94 E-7, reground the cam, reground the lifters, and had to buy one new lifter, saved a boat load of money compared to buy a new cam and all new lifters. Below is a list of repairs that can be performed. A bad head gasket only requires a gasket and heads as long as the cylinders have not settled. My self if i need a cam and have no more which i will not run out of them i will use these guys. I have seen that same thing happen more than once. It's no secret that diesel engine parts can cost an arm and a leg.
Let it set overnight with a puller still on it. The original design up Mack E-Tech Crankshaftuntil 1990, featured a turbocharged air mounted cooling system. E7 engines that have been taken care of should go a million miles or more as long as there is no catastrophic failure elesware. Better take a good look at the cam lobe, it could be damaged as well. Now the lifers have the finish reinstalled by a slice of something refused or welded to the face of the lifter. It is not unlikely to have a Mack Engine put 1,500,000 miles hauling full loads and not need a major overhaul.
Sure glad it wasn't mine!!!!!! The truck runs well and doesnt use any oil bought from original owners and not sure if it been apart before. Both large scale and small scale operations flocked to the Mack E7 Engine because of its reliability and fuel efficiency. E7 engines that have been taken care of should go a million miles or more as long as there is no catastrophic failure elesware. The cam weighs about 90 lbs with the gear. How's that for an aftermarket part? We remanufacture the mack e7 engine to your specific serial number and built to original engine manufacturer specifications. Staxx i am or was like you untill i found out about a new method of grinding.
Receive your download link via you payment email after payment is being accepted, 100% Lifetime Satisfaction Guarantee! A bad head gasket only requires a gasket and heads as long as the cylinders have not settled. Mack E-7 History and Technical Information The Mack e7 engine is the backbone of the almighty Mack Bulldog fleet. Excessive blow by and oil consumption or traces of metals or soot in oil analysis a good indicator of tired rings i. Mack used this system exclusively on the E7 engine. Mack E7 Engine Production Process at Capital Reman Exchange The crew at Capital Reman Exchange are experts at rebuilding and remanufacturing Mack E7 and E-Tech engines.
A company up the road from here found out the hard way about proper ground clamp placement when welding. Both had the dowel pin broken in the block. I belive that overhauls are only nessesary if you have failure in the cylinder, rods, or bearings. Consequently, at the highest hp rating a Mack e7 engine will put out was 454 hp at an impressive 1,660 foot pounds of torque. The history of the engine is steeped in technology, tradition and good old American gumption one would expect from Mack. In 1999, Mack introduced the E7-460, which sported the Mack E-Tech technology. I am a new member to the site and look forward to all the news, ideas, and comments concerning Mack trucks and other diesel rigs.