2006-08-07 00:49:10 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
GM has(or had) a 4.3 liter v6 that was derived from the 5.7 liter v8. I am unsure which end had two cylinders removed from it.
They didn't knock out the cylinders. They had to re-engineer the balance and firing order and fuel delivery system and camshaft.
So it can be done, especially if you have resources equivalent to a major automobile manufacturer.
2006-08-07 01:39:12 · answer #1 · answered by Anonymous · 5⤊ 0⤋
These engines have a firing order for eg., a v8 may have - 1-4-7-6-8-5-2-3 left leading and right following, ie.,L1 and then R1 and then L4...
This has been designed to balance the engine crankshaft rpm to be smooth or stresses does not develop in particular cylinder power assemblies more than the other and the counterweights of the crankshaft have been designed accordingly. Manufacturers who have designed the engine have calculated for isolating a cylinder from working one from either side of a V8 and this should be known to make it as V6.
VR
2006-08-07 21:22:41 · answer #2 · answered by sarayu 7 · 0⤊ 0⤋
Because we're talking about a 4-stroke engine, you can remove any 2 of them and there is always a cylinder in each stage at all times. V6 engines are just designed with the idea of 4 cylinders (with one in each stage) and then 2 more 'spares' for some extra power
2006-08-07 12:26:13 · answer #3 · answered by Brian 3 · 0⤊ 0⤋
You remove the companion cylinders.
It's any pair that fire 180 degrees from one another.
Cadillac has a system called a "4-6-8" which cycled the spark away from various cylinders to reeduce fuel consumption.
It's a workable system & doesn't "ruin the engine".
With a newer fuel injected engine, it would be a simple matter to drop the injector signal to the companion cylinders & not have the fuel soak in the particular cylinder.
2006-08-07 13:44:25 · answer #4 · answered by mnm75932 3 · 0⤊ 0⤋
The recent scheme one manufacturer is using as a fuel saving technique is to remove two cylinder's from the active lineup while driving when power requirements are low. Any two can be removed as long as they are not next to each in the firing order. This would cause a noticeably rough running engine. The two that are cut out are in a rotating pattern so that engine wear will remain even.
There are of course several other considerations such as fuel shut off, compression release and individual valve control to accomplish this.
2006-08-07 10:26:09 · answer #5 · answered by Buffertest 3 · 0⤊ 0⤋
You don't. If you want a V6 then buy a car with a V6, or have the V8 engine replaced with a V6 engine.
2006-08-07 07:56:54 · answer #6 · answered by Anonymous · 0⤊ 0⤋
the one it is balaced with. but it will not work. if the fuel going to those two dead cylinders dont fire. the fuel seeps into the oil pan .and washes out the bearings .resulting in engine replacement.
2006-08-07 07:59:09 · answer #7 · answered by duc602 7 · 0⤊ 0⤋
That's not the way it works.... Every cylinder is essential or you'll ruin the engine.
2006-08-07 07:56:42 · answer #8 · answered by ceprn 6 · 0⤊ 0⤋
you cannot take the other two cylinder it won't work b'coz you alterred the correct firing order
2006-08-07 08:36:07 · answer #9 · answered by magneto077 2 · 0⤊ 0⤋
one on the left and one on the right...
2006-08-07 07:59:09 · answer #10 · answered by Anonymous · 0⤊ 0⤋