premix setting

khairi01 · SR Newbie Joined: 02-Feb-2010 Posts: 4 Location: jurong

hi i just change my bike to a premix setting. can you tell me whats the correct amount of 2t and petrol to use for premix. thanks. =)

bebear88 · Posted: Tue Feb 02, 2010 1:32 pm Post subject: Re: premix setting

20ml per 1 litre...

kayak_pc · Posted: Tue Feb 02, 2010 2:44 pm Post subject: Re: premix setting

factory settings is 20 ml to 1 litre of petrol. then slowly reduce the amt of 2t. first u need to monitor ur condition of ur spark plug. if go trail dun really whack hard, u might wan to drop to 10ml. most people use abt 15 - 20

Crasher · Posted: Tue Feb 02, 2010 2:52 pm Post subject: Re: premix setting

it depends on your bike
back on my old 2 strokes i used a 45-50:1 ratio.

dupont.07 · Posted: Tue Feb 02, 2010 4:35 pm Post subject: Re: premix setting

ok.. what if i use 20ml per 1 litre... but everytime i need to change my plugs.... and the plugs are damn wet... but im scared to change the amt of premix.. scared later piston jam.... how....?

kayak_pc · Posted: Wed Feb 03, 2010 2:09 am Post subject: Re: premix setting

Either u change ur jetting configuration or you whack hard so that the 2t can burn..

Dzefro · Posted: Wed Feb 03, 2010 2:19 am Post subject: Re: premix setting

kayak_pc wrote:

Either u change ur jetting configuration or you whack hard so that the 2t can burn..

whack hard!

Crasher · Posted: Wed Feb 03, 2010 7:45 am Post subject: Re: premix setting

your plugs are black from too much 2t oil

take it back to about 50:1 (60:1 max!), 20:1 is far too high

dupont.07 · Posted: Wed Feb 03, 2010 9:15 am Post subject: Re: premix setting

if 20 ml to 1 litre is high.....

the 50 : 1 .....????

dopplegangus · SR Bronze Member Joined: 24-Mar-2005 Posts: 1038

dupont.07 wrote:

if 20 ml to 1 litre is high.....

the 50 : 1 .....????

50:1 is ratio... which meant 1000ml or 1 litre (petrol) : 20ml (2t)

dopplegangus · SR Bronze Member Joined: 24-Mar-2005 Posts: 1038

Crasher wrote:

your plugs are black from too much 2t oil

take it back to about 50:1 (60:1 max!), 20:1 is far too high

Bro, who mentioned using 20 : 1 ratio? Nobody.....

khairi01 · SR Newbie Joined: 02-Feb-2010 Posts: 4 Location: jurong

so 20 ml of 2t is to 1L of petrol is the best? thanks for the advice. =)

Crasher · Posted: Wed Feb 03, 2010 10:53 am Post subject: Re: premix setting

dopplegangus wrote:

Crasher wrote:

your plugs are black from too much 2t oil

take it back to about 50:1 (60:1 max!), 20:1 is far too high

Bro, who mentioned using 20 : 1 ratio? Nobody.....

right sorry, i was skim reading, misread.
still if your plugs are black lower the ratio

KTM superfly · Posted: Wed Feb 03, 2010 11:37 am Post subject: Re: premix setting

1000 divide by 20 is 50. so for 20:1 ratio its like 50ml per litre.

1000 divide by 50 is 20. so for 50:1 ratio its like 20ml per litre.

i think the 50:1 ratio is for race fuels...

dopplegangus · SR Bronze Member Joined: 24-Mar-2005 Posts: 1038

KTM superfly wrote:

1000 divide by 20 is 50. so for 20:1 ratio its like 50ml per litre.

1000 divide by 50 is 20. so for 50:1 ratio its like 20ml per litre.

i think the 50:1 ratio is for race fuels...

Nobody uses 50:1. Not even for racing.... I believe 20:1 is the best. I used it and I have never whacked my bike. Ride maximum 70km/h, even on expressway. The thing is, a healthy engine ktm with correct jetting should not face any wet sparkplug at 20:1 ratio.