Run a bike on half cylinders.

[offrd]

ive often thought about running my bike on old oil from the deep fryer mixed with vinegar for a bit of omph what do you think? You know biofuel kind of... would it work?

Yeah sure if your bike is a diesel......

[Motu]

I've just tried this idea on my bike - I've removed the sparkplug,and now it won't start! Do you think I've done any damage? I'm really puzzled be cause it always went before...now it's just dead - HELP!

[McDuck]

1

If you leave the spark plug lead off it can root the coils. Not worth the risk IMHO. (Besides wouldnt you only have to remove one to do the CCC?)

[NordieBoy]

ive often thought about running my bike on old oil from the deep fryer mixed with vinegar for a bit of omph what do you think? You know biofuel kind of... would it work?

Depends which tyre you put it in.

[NordieBoy]

I've just tried this idea on my bike - I've removed the sparkplug,and now it won't start! Do you think I've done any damage? I'm really puzzled be cause it always went before...now it's just dead - HELP!

Think of all the fuel you'll be saving

FuelUsed%=FiringCylinders/TotalCylinders*100


Wonder what would happen on a dual spark head like the DR

[swbarnett]

Will it be bad for a bike to be run on half its cylinder?

i.e., if i ran a cbr250rr (4 cyl 4 stroke) on 2 cylinders by removing the spark plugs would it break it?

and if it would break it, what would the damage be.

I lost a solenoid in the CB750 (one of two) when I was visiting my grandparents in Turua (10km south of Thames). Rode it all the way back to Auckland on 2 of 4 cylinders. It took a couple of minutes to accelerate to 80kph and wouldn't push any more. Caused no damage to the bike, just replaced the solenoid and all was right as reign. Also, I had no comments from the rider covering my rear about clouds of unburned fuel.

[xwhatsit]

I've just tried this idea on my bike - I've removed the sparkplug,and now it won't start! Do you think I've done any damage? I'm really puzzled be cause it always went before...now it's just dead - HELP!

Buy a bike with more than one cylinder, you cheap moustachioed bastard

[inlinefour]

Will it be bad for a bike to be run on half its cylinder?

i.e., if i ran a cbr250rr (4 cyl 4 stroke) on 2 cylinders by removing the spark plugs would it break it?

and if it would break it, what would the damage be.

Is your middle name skidmark? Why the hell would you want to do that???

[pyrocam]

I was riding my cbr250rr and one of the plugs popped out. I kept riding it to my destination, it was loud as fuck and very VERY gutless.

didn't do any damage though, I had the engine pulled apart and rebuilt by Kerry after. probably did 50k with it like that.

[scumdog]

If you pull the plugs out the dead cylinders will act as an engine brake - the drag of moving air into and out of the cylinder will slow the engine right down. It used to be common (before decent brakes on dirt bikes) to have a decompressor screwed into the spare plug hole of two strokes, and this was used as an engine brake. Leaving the plugs in would be less drag as the energy expended compressing the air (on the upstroke) is returned by the spring effect of the compression on the downstroke. The engine will still run like shit, however.

There is a major flaw in your theory, without going into it try this:

Next time you have the plugs out of you engine spin it over using the starter motor.

Then try it with the plugs back in.

And notice the cranking speed.

[Motu]

But at 17,000 rpm your bike is really going to be pumping a lot of air in and out of the plug hole.

[NordieBoy]

But at 17,000 rpm your bike is really going to be pumping a lot of air in and out of the plug hole.

Yeah, should really stick a bit of rag in the hole.

[scumdog]

I lost a solenoid in the CB750 (one of two) when I was visiting my grandparents in Turua (10km south of Thames). Rode it all the way back to Auckland on 2 of 4 cylinders. It took a couple of minutes to accelerate to 80kph and wouldn't push any more. Caused no damage to the bike, just replaced the solenoid and all was right as reign. Also, I had no comments from the rider covering my rear about clouds of unburned fuel.

Hmm, the petrol washing the bore clean would have caused extra wear on the cylinders that were'nt running But whether you would ever notice is another matter.

[FilthyLuka]

Hmm, the petrol washing the bore clean would have caused extra wear on the cylinders that were'nt running But whether you would ever notice is another matter.

Carbs rely on the vacuum caused by the piston moving downwards, with no plug, there would be no vacuum, therefore no fuel.

[scumdog]

Carbs rely on the vacuum caused by the piston moving downwards, with no plug, there would be no vacuum, therefore no fuel.

I was refering to about three or so posts back when somebodys bike was ridden with only two cylinders running, (as per the quote on my post) no mention was made of plugs being taken out.