Tunnel fun

[kickingzebra]

Can somone please explain to me how one would go about getting your carb'd bike to back fire? Someone once told me in a car if you switch it off then pump the gas then turn it back on.... but ive never driven a carb'd car before and tried to do this on my bike to no success......

Hit the kill switch with the throttle open, leave it for a second or two, then flick kill switch back on. Is very good for your valves...

[The Pastor]

Hit the kill switch with the throttle open, leave it for a second or two, then flick kill switch back on. Is very good for your valves...

Is that leave it with the throttle open?

[kickingzebra]

you can even do it without moving, just rev the bike up kill switch off and on, and bang! Leave the throttle open to suck extra gas into chamber and exhaust, not ignited, cause spark plugs are dead, then when you kill switch on again, when the spark plug goes, it catch the whole lot alight, past the headers into the exhaust pipe, and wala, back fire.

[sAsLEX]

you can even do it without moving, just rev the bike up kill switch off and on, and bang! Leave the throttle open to suck extra gas into chamber and exhaust, not ignited, cause spark plugs are dead, then when you kill switch on again, when the spark plug goes, it catch the whole lot alight, past the headers into the exhaust pipe, and wala, back fire.

Or drain the water and oil out of your bike and run it on the rev limeter, after a while the pipe will get red hot and ignite the fuel that gets through while the rev limeter cuts spark


bang bang bang bang

[Qkchk:Me]

I used to have an old moto guzzi with open lafranconi pipes on it, apart from setting off car and house alarms in narrow streets, I would love to hit the kill switch in tunnels and fire it up on the fly and listen to the 'sonic boom' of a bloody loud backfire and the look of fear on cagers faces!

I used to have car like that, good party trick! Bring the revs up in neutral (while still rolling) then turn the ignition off then do a bump start - BOOM!

[kickingzebra]

Yes, it should be noted they call it an Internal combustion engine for a reason...
Backfiring generally does nasty things to the poor wee bike.

[The Pastor]

I tried it just not with the bike in the garage... to no success I'll report back when Ive tried it. Ive got a good practice spot...... right out side the coppa house!

[dawnrazor]

I tried it just not with the bike in the garage... to no success I'll report back when Ive tried it. Ive got a good practice spot...... right out side the coppa house!

if your engine is a bit shit, you'll get flames as well...fun fun fun

[Qkchk:Me]

if your engine is a bit shit, you'll get flames as well...fun fun fun

Even better if its a turbo engine, minus the turbo

[The Pastor]

hmm I cant seem to do it.. I must be handicapped?

[kiwifruit]

hmm I cant seem to do it.. I must be handicapped?

try it in motion, say 2nd gear, get it right in the power where it pulls best... say 4-5000rpm, hit the kill switch, pin the throttle for about a second, un pin the throttle and unkill the kill switch ......BOOM! helps to have a fairly open exhaust.
Not good for it tho aye
My old mitsi sigma went from a good runner to burning one litre of oil every 100km after a month of doing this.

[Fat Tony]

Or drain the water and oil out of your bike and run it on the rev limeter, after a while the pipe will get red hot and ignite the fuel that gets through while the rev limeter cuts spark


bang bang bang bang

Ahahahahaaaaaaaaaaaaa