Re: Electronic to Mechanical Pump

Posted by RodInNS on April 04, 2006 at 10:56:58 from (142.177.84.83):

In Reply to: Re: Electronic to Mechanical Pump posted by jdemaris on April 04, 2006 at 06:04:15:

I would disagree with you about ease of starting on electronic engines vs mechanical engines. I'll use Cummins as an example. I've got an old NTC855-350 + that winds and winds when trying to start it. Mind you, the compression isn't what it used to be. But if it's below freezing, you need not think of starting it, unless it's been on life support for several hours. I've also got an N14-435, again with lots of miles, that will start at -15C without a hitch, unassisted. It literally turns twice, and it's running. It starts better cold than warm.... which doesn't make a lot of sense, but it does. I think most of the difference between the 2 could be attributed to timing advance, so I think it makes a considerable difference.
I would say there is also some fuel savings with electronic controls, but it's a bit harder to quantify. The controls are likely more accurate, and as you say, consistent, which allows a smaller engine to be pushed to higher specs with less chance of harm. There are definite efficiency gains from pushing 400 hp from and 11 L engine over a 14 L engine. I would certainly argue that heavy trucks, by and large, are a good deal more efficient than 15 years ago. Pickups are not likely any better, if as good, but look at the power they have today. 15 years ago, they didn't come with a 3-1/4 cummins under the hood. Your wife's Jetta is much the same game. It's a lighter, less powerful car than your son's TDI. That added to the fact that your son probably doesn't drive like your wife.... At least I don't drive the Jetta like my mother does... She would easily see 25-30% better mileage than me, because my right foot knows one position... sitting on the floor boards. Not that this has anything to do with the original chevy question....

Rod

Replies:

• Re: Electronic to Mechanical Pump jdemaris 11:32:44 04/04/06 (2)
  • Re: Electronic to Mechanical Pump RodInNS 15:17:47 04/04/06 (1)
    • Re: Electronic to Mechanical Pump jdemaris 20:08:02 04/04/06 (0)

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