Can I convert a 6 cylinder motor in to a 3 to save gas?

no just into a 4 cylinder but you need alot of extra money look it up

HUh? I don’t think so. Just sell yer car and buy a scooter ( Vespa or Whizzer Bike)

Uh no!!! You take the pistons out and the air/fuel mixture from the intake valve will pour into your oil. That is the first of many major problems with that.

I would guess the balance would be way off. It would probably run real rough and not have any power.

The answer is no or if it is somehow possible itd be entirely worthless.

You are joking right? There is so much wrong with your thinking that i don’t even know where to start.

Nope, would be a waste of time.

You couldnt take out the first 3 because it would throw the whole balance of the motor out.

You would also have troubles with keeping the motor going, due to the firing order of 1 5 3 6 2 4. You would need to change the distrbutor to a 3cyl one to give you correct timing and firing order.

It would be awful to drive, however. It would be s-l-o-w, underpowered and would not be reliable at all.

Your best option is to sell the car and to buy a smaller one, or buy a pushbike and keep the car for long distance travelling.

No way that’s going to work.

Interesting question. Your proposal should work without removing pistons if your engine has valves designed so you can make both intake and exhaust valves remain closed, e.g. remove the push rods on an overhead valve inline six. By doing thus you will stop those cylinders from aspirating and thereby cut the displacement by half as you propose to shut off three of six cylinders. With the valves closed the working cylinders will compress the air in those closed cylinders storing energy, Then after the piston reaches top dead center that compression will drive the piston down thereby recovering the stored energy. Theoretically the only energy lost will be that to thermodynamic heating. I would check the firing order, 153624 is typical, and close off every other cylinder such as 5, 6, and 4. You’ll likely have idle problems, rough running, and of course performance degradation. However, with your operating needs “most of the time idling or crawling along in rush hour traffic” I suspect a little tweaking such as mechanical idle control will give you acceptable operation with noticeable fuel savings. I don’t recommend doing this, but if you should, post your results.

It’s a waste of time and money.