help... yamaha yz 125 spark plug and oil/fuel mixture

[neiloggy1]

hi all
i have a yz 125 1996 model
currently has a br9eg in it
i have been told to use a br9eix and fuel mix of 32/1
is this right please help...

thanks in advance neiloggy.
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98 zx9r

[neiloggy1]

come on simple questions like this and no1 has an answer
if no1 can answer this i wouldnt dream of asking about anything serious
lol
is there ne 1 out there...
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98 zx9r

[prawny1]

32-1 would be o.k for normal use,

That is about 31.25ml oil per litre of fuel or 125ml per 4 litres,

For low rev slow speed riding like woods stuff that gives a lot of oil build up in the crankcase you can go to about 40-1 or 25ml oil per litre fuel or 125ml per 5 litres,

For high rev high speed riding you need a stronger mixture because the oil in the fuel will have less chance to seperate in the air stream, you can go as little as 25-1 or (approx) 41ml oil per litre of fuel but anything additional to your 32-1 mix will help if you run with the throttle nailed over fields etc.

As far as the plug goes I should imagine if it's recommended as an alternitive to the stock plug number then it should work fine,

[stirlinggaz]

the only difference between the plug you already have & the one you mentioned is the tip.
the br9eix is platinum tipped & therefore costs 3 times as much as an ordinary copper/iron tipped plug. (stick to the normal ones, you can buy more & treat them as disposable. how you gonna feel after spending nearly a tenner on a spark plug & it fouls after a few miles?)
& those mixtures sound ideal .(although i thought the yz had an oil pump?)
cheers,
GAZ

[neiloggy1]

the yz motorcross definately has no oil pump
i thought most motorcross bikes are premix??????
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98 zx9r