can you help wot iz the best octane petrol mix you can run in a 2 stroke motocross?

Question

It iz a kx 125 and what fuel strengh you carun it on

Answer 1

super unleaded 93octane

Answer 2

my whole life i rode two strokes up untill 2004 when i got my first four stroke and now i want my 2stroke back :-/ but anyways unless the bike has had exstensive motor work done or it sounds like a knock inside you motor already just premium grade 91-93 grade will work fine and even though almost every manual will tell you to run it at 32:1 for most bikes its a little rich and mosty printed because it will help the bike run past its top end service interval much longer wich help the company look a little better. the best mixture i have found and almost everyone alse in the southern california races (still racing 2 smokes) has found that a mix of 40:1 gives the best mixture and if your replacing your top end every 12 hours like the manual states than that mix get you through fine.

the whole reason for mixing the oil into a two strokes fuel is because unlike a four stroke their is no oil under the piston that comes up through a series of rings to lube the crankbearings, wrist bearing and piston and rings. so it has to be put in the gas. your two stroke will start and run on strait gas but not for long before it seizes. also the best oil i and many other riding friends have found is Maxima K2 oil. it is fully sythetic burns clean with almost no deposits or "goo" and will alow you to run 40:1 with no worries whatsoever

Answer 3

this depends on ur bike is it new or been rebored recently if so then the mix should be 50-1 (50 parts petrol -1 part 2 stroke oil)
if ur bike has done over 500 miles then the mix should be 25-1 (25 parts petrol - 1 part 2 stroke oil) this is specific to high perfomance 2 stroke engines helps to maintain the engine causing lower wear n tear. if ur smoke from ur exhaust is blueish then to much oil and reduce the amount in ur mix. each time u use the bike make sure u shake the tank b4 u start it as the oil n petrol will seperate and need to b remixed

Answer 4

Hi there i think you mean two stroke oil that is mixed in the tank on a 5o/50 mix with unleaded petrol for your bike failiure to put oil in will burn the piston rings very quickly and end up a non runner.

Answer 5

I run my son's KX 65 stock practice bike on regular 87 with a 45-50/1 mix, and it runs great

Answer 6

premium 92 93 etc., i run 95 to 98 octane in mine personaly. have to mix race fuel and gas to get that. or bardahls octane boost os the only one for 2 strokes that i know of.

Answer 7

YOu can buy race gas at 104 octane, but it is not available at regular gas stations. You can find out from any motorcycle dealer who sponsors MX'ers. The next best is Sunoco 94 Ultimate.

Answer 8

If it's stock you are wasting your money on higher octane. Higher octane is for motors that have been modified to increase the compression ratio. Stick with the mfr. suggested octane for stock (likely 87) and you won't literally be burning your money.

Answer 9

i say put medium grade or the expsensive gas in it. if u use the exspensive gas put the exspensive oil in it