what fuel do you use?

I use exclusively 7-11 fuel

well from what ive read the higher the compression ratio the higher the octane rating u can run it on for optimum performance as for ignition timing dont know a whole lot on it but if u set the ignition time for a later period so all the fuel gets burned up before reaching the top dead centre point would
so ill go with compression ratio even tho they both play some what equal parts i could be wrong
i dont know much about it explain your point of view so i can better understand it

Are you really interested in this ...come on mate this has to be a gee up

yeah i am interested whole reason i got into bikes was because of helping my cousin work on his super black bird over the holidays in 2010-2011
want to learn everything from the mechanics of the bike from the basics to everything else so as the years progress ill be comfortable and confident enough in modding/maintaining the bike if ever it gives any problems but what ever your impression of me = squid so lets not bother with fitzy

google *detonation* - that will give you the best explanation

If you have a high performance such a 6 or higher then i would use BP ultimate 98 but a 250 will do fine with a 95 octane as the ignition point of 98 is not necessary for a 250cc class bike unless you modify the fuel delivery, injectors or re-tune the ECU etc.

nope wanted to keep it stock if anything would be considered modding would be the exhaust even that turns out is not a good idea as i don't want to attract the pigs

I use exclusively Liberty Unleaded

Stick to 95 then.

I use exclusively petrol

If you have a high performance such a 6 or higher then i would use BP ultimate 98 but a 250 will do fine with a 95 octane as the ignition point of 98 is not necessary for a 250cc class bike unless you modify the fuel delivery, injectors or re-tune the ECU etc.

250 ninjas in australia still use carbies

If you have a high performance such a 6 or higher then i would use BP ultimate 98 but a 250 will do fine with a 95 octane as the ignition point of 98 is not necessary for a 250cc class bike unless you modify the fuel delivery, injectors or re-tune the ECU etc.

250 ninjas in australia still use carbies

Thanks for the heads up.. that changes everything then

remember unleaded 91 will not be sold from june 2012.

shell and a few other servo's are putting ethanol in their 98

so there will be only e10, 95 unleaded, 98 with e10, e85.

then they will phase out 95 unleaded.

government is forcing the issue with carbon blah blah

this is coming from a petrol station owner

remember unleaded 91 will not be sold from june 2012.

shell and a few other servo's are putting ethanol in their 98

so there will be only e10, 95 unleaded, 98 with e10, e85.

then they will phase out 95 unleaded.

government is forcing the issue with carbon blah blah

this is coming from a petrol station owner

WTF
But dont they have to advertise if its got ethanol in the mix? i dont know, hence the qestion...

remember unleaded 91 will not be sold from june 2012.

shell and a few other servo's are putting ethanol in their 98

so there will be only e10, 95 unleaded, 98 with e10, e85.

then they will phase out 95 unleaded.

government is forcing the issue with carbon blah blah

this is coming from a petrol station owner

I thought I read somewhere the other day that this was thrown out...

remember unleaded 91 will not be sold from june 2012.

shell and a few other servo's are putting ethanol in their 98

so there will be only e10, 95 unleaded, 98 with e10, e85.

then they will phase out 95 unleaded.

government is forcing the issue with carbon blah blah

this is coming from a petrol station owner

I thought I read somewhere the other day that this was thrown out...

They did.. It was proposed, there was kaos and the subject went quiet..
http://www.fullyloaded.com.au/industry- ... 77841.aspx

well after i empty the tank i am gonna start putting in 95 in the tank going to get about 320 km estimating from the current fuel still a 1/4 of the tank left and im at 275km