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Old 08-20-2008, 12:01 PM   #1
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Join Date: Aug 2008
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how to change your V8 to a 4-cylinder

or you could change your six-cylinder into a four-cylinder, or a three cylinder. Or if you're not feeling so courageous, you can change your V8 into a six-cylinder.

this isn't exactly a new idea, but a quick look at the board I didn't see it listed. It would be really nice if you could yank that biggie engine out, and saw off half of the cylinders. But that would be a heck of a lot of work, and I'm inclined to believe that without four of the Pistons you would have a major inbalance problem. So the answer is simply this: INACTIVATE THEM.

Doing this is simplicity itself, and on most of your V. eights, readily reversible if you don't like what you've done. Simply pull the valve covers, and remove the push rods. If you have a fuel injection, you will also want to pull the wire's at the fuel injectors.

I told you this isn't a new idea. Cadillac used it back in the 80s. They called it 4- 6 - 8 . Honda uses it now, they call it "active cylinder management" of course those guys all use computer control, but what we're doing we could call "inactive cylinder control"

At this stage of my life, both of my vehicles have four-cylinder engines, and I'm not quite ready to rob them. I would have to grind the camshaft lobes, since they're both overhead cams. I would want someone else to make that experiment.

Best wishes, Tom
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