03-07-2014, 11:33 AM
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#71 (permalink)
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Aero Deshi
Join Date: Jan 2010
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Uh...I think if you get one of these and use the "Torquening Slotted Camshanks" feature on your #4 Cylinder Camshank, that would make it stop working.
Alternatively, you could refer to the picture below and pick which one is the #4 fuel injector and simply unplug the control wire to it. That'll stop the fuel flow.
Hope this helps, and don't be tempted by the Bono Safety Glasses, they're crap. Besides, who wants to look at the world through rose colored lenses anyway?? 
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03-07-2014, 01:38 PM
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#72 (permalink)
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eco....something or other
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I have driven a chevy silverado for work, and the 4 cylinder feature nearly doubled economy. I was looking at 14 mpg in v8 mode and 30 in 4 cyl mode.
It would switch over at about 8 inches of vacuum if I remember correctly.
I was able to coax 30 mpg out of one of the chevy diesel work trucks one day as well. The guys riding with me had to pick their jaws off the floor. They made it their mission to get the lowest mileage they could from that day forward. I never saw those trucks get above 14 mpg ever again. They beat on em hard.
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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03-07-2014, 01:44 PM
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#73 (permalink)
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(:
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That ain't gonna happen here.
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03-07-2014, 02:02 PM
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#74 (permalink)
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Not Doug
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Would a deactivated cylinder run rougher or smoother than my car while it was misfiring on one cylinder? If it is anywhere near as bad, I would not recommend that to anyone!
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03-07-2014, 09:33 PM
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#75 (permalink)
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Master EcoModder
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Xist, depends on the harmonics of the engine. You find the right rpm and it will rattle itself apart.
IsaacCarlson, the commercial truck company I worked for would install a anti starter grind so people couldnt purposely ruin the starter. People just abuse the hell out of a work truck unless its a one man owner/business.
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03-08-2014, 02:53 PM
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#76 (permalink)
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eco....something or other
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Properly deactivated cylinders run as smooth as they originally did. I have turned off 3 cylinders on my truck and it ran fine and sounded like a perkins 3 cyl diesel.
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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03-08-2014, 03:04 PM
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#77 (permalink)
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(:
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We are not going to have any properly deactivated cylinders here.
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03-08-2014, 08:08 PM
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#78 (permalink)
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Master EcoModder
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FYI, driving the truck in this manner is similar to how people abuse the lean burn mode in the Insight and Civics to get supreme fuel economy. In many cases the power generated is not enough to sustain highway speeds so they drive slower like 50 mph or do a modified pulse & glide using lean burn in the glide part to extend the coasting aspect til they hit the bottom speed and reaccelerate.
Quote:
Originally Posted by IsaacCarlson
I was able to coax 30 mpg out of one of the chevy diesel work trucks one day as well.
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03-08-2014, 09:58 PM
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#79 (permalink)
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Banned
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Quote:
Originally Posted by Cobb
FYI, driving the truck in this manner is similar to how people abuse the lean burn mode in the Insight and Civics to get supreme fuel economy. In many cases the power generated is not enough to sustain highway speeds so they drive slower like 50 mph or do a modified pulse & glide using lean burn in the glide part to extend the coasting aspect til they hit the bottom speed and reaccelerate.
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Define "abuse", We're all driving around in boxes of steel with even tinier boxes of steel which have explosive petrol and air and spark mixes, and to top it off we "abuse" the internals by skimping on oil changes, and by throwing all of this at other objects at 60-120km/h.
Most of us don't even wax the outer part of our steel boxes to keep the paint job in check.
Other people (not me) then neglect to do regular life-saving changes on the lifeblood which permits these flying bits of metal to run smoothly and operate as it was designed to.
If you ask me the human race needs to be abused for a while, poor things.
If it were up to me no engine would ever go above 1,200 rpm in any gear, it would last for 2 million miles and the body would be made from stainless steel.
But its just not practical. Can't hurt to try though on the way to church :P
Other traffic is what prevents me from driving at <40km/h speeds (25mph), I've been known to even tell my neighbours that I want the residential speed limit reduced to 25-30km/h.
Drool:
What we need is really really big flywheels.
Last edited by yoyoyoda; 03-08-2014 at 10:35 PM..
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03-09-2014, 11:20 PM
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#80 (permalink)
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Banned
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Maybe the reason why these engines run so well is because they have a lower compression ratio, so therefore are less prone to be rattling like crazy because there is less power per stroke pushing onto the crank.
Firing order has something to do with it too.
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