Re: fuel economy

Posted by NCWayne on March 08, 2014 at 19:53:26 from (173.188.169.54):

In Reply to: Re: fuel economy posted by Spook on March 08, 2014 at 17:49:24:

Better parts and life expectancy in the newer engines?...Come on..... They are working the newer engines so hard trying to squeeze so many HP out of such a small package that the overall life expectancy of a new engine can't even come close to the older engines. Yes, an engine might now go 200,000 miles before needing to be rebuilt, but the older one, with proper maintance, is also capable of going 200,000 miles. Heck, even if you only get 150,000, per rebuild, out of it and are able to rebuild it 3 times your still going to have a longer overall life span than the 200,000 mile engine that is so worn out it's impossible to rebuild, (if it's rebuildible)......

That's just my opinion on the 'modern engines' that I've gotten over the years based not only on mfg claims, but on actual customer experiences with the longetivity of the newer engines -vs- the older engines, in their machines.

If you want to go to a component level, take Cummins (and others but the Cummins I've heard a lot about), with their 'fractured' rods in their engines. The old ones have been working fine for years and could be reconditioned, if needed, when the engine was rebuilt. The new ones are basically a one time use only and CAN NOT be reconditioned, or anything else if they get out of round, etc. I know a guy that builds a lot of them, for a living, and he said the problem is they often distort, get out of round, etc, etc because of the heat and other factors. Unlike the old rods the new ones will shatter and create much bigger problems than the same 'failure' would have caused with the old rods. He said he will not put one of those new 'pieces of junk' in an engine he builds. Funny thing is some engineer designed them so the rod cap, and the main body would interlock due to a need to keep the cap from slipping side to side.....I've worked on a lot of engines over the years, some that have been running nearly every day, and rebuilt several times over their 40 plus year life....and are still running and doing their job just fine. Thing is they do it all with 'antiquated' technology.

I could keep going with the problems I've either seen personally, or heard about from others, with the new engines -vs- the older engines. Funny when the old ones go bad the parts to repair them are typically affordable. Think about something as common to a diesel as an injector. The majority of the old ones could/can be bought for literally pennies as compared to just one of the new ones that often cost as much, or more, than a full set of the old ones. Then throw in the computer that controls the whole shebang. Let it go bad and your often out more than the machine is worth by the time you pay someone to troubleshoot the problem, hope the first diagnosis is correct. Hey, when the computer cost $2000 and the labor to say that was the problem was another $1000, and the down time cause by it was another $20,000,...then there was another $3500 in labor, and another $2500 in parts, and another week of downtime to repair the a second cause of the problem (a wiring harness problem causing the computer to throw false codes and cause a semifaulty self diagnostic), and then another day, and another $1500 for a new stepper motor, all just to repair a 'throttle issue that wouldn't allow the engine to reach it's maximum RPM. .......All the time a mechanic looking at the old machine could have said hey, the throttle linkage is broken...and repaired it for ALOT less.

But everything has to be electronic controlled in the name of fuel savings, environmental cleanliness, etc, etc. That said, explain the savings in this scenerio. An engine using 30's technology, all mechanical fuel system, etc, etc that moves x amount of material in a day using 30 to 40 gallons of fuel -vs- it's replacement (newer machine) that moves less than half the material in the same amount of time using 130 to 140 gallons of fuel. Again a situation presented to me by a customer's operator when asked how he liked his new machine....beyond the fuel usage he said 'well, at least I've got A/C now....LOL'

In the end the old engine will be running, and rebuildable, long after the new ones are melted down and made into a newer engine, and that same cycle repeated over, and over because the new engines aren't usually worth rebuilding when they reach the 'end of their life'. Look in any salvage yard and see the amount of vehicles in there with blown engines (again something I've done since I work for several salvage yards)if you still need proof.

Replies:

• Re: fuel economy buickanddeere 05:55:08 03/09/14 (0)

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