i use premix, is synthec oil ok to use?
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i use premix, is synthec oil ok to use?
i use premix, is synthec oil ok to use? I have no omp, so i beliave its ok to use synthetic oil as ur engine oil(not premix)?
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Originally Posted by C. Ludwig
Synthetic in the cranklcase. Yes.
Synthetic 2-stroke for premix. Yes.
Synthetic 2-stroke for premix. Yes.
Whats the name of the best sythetic premix and how much do you use
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I was talking to one of my biker buddies the other day.. he knows his stuff about 2 stokes and does a lot of engine building.
He posed a very interesting hypothesis.. when using the omp, oil is injected into the engine constantly with rpms. With premix and no omp.. oil is subsequently injected only when the injectors are firing..
So on decel, your engine is pumping free air.. the injectors are zero duty cycle, the engine is spinning.. but where is the oil for lubrication under these conditions? This is the reason they dropped premix with many modern bike engines etc..
He posed a very interesting hypothesis.. when using the omp, oil is injected into the engine constantly with rpms. With premix and no omp.. oil is subsequently injected only when the injectors are firing..
So on decel, your engine is pumping free air.. the injectors are zero duty cycle, the engine is spinning.. but where is the oil for lubrication under these conditions? This is the reason they dropped premix with many modern bike engines etc..
#9
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Originally Posted by ky7
I was talking to one of my biker buddies the other day.. he knows his stuff about 2 stokes and does a lot of engine building.
He posed a very interesting hypothesis.. when using the omp, oil is injected into the engine constantly with rpms. With premix and no omp.. oil is subsequently injected only when the injectors are firing..
So on decel, your engine is pumping free air.. the injectors are zero duty cycle, the engine is spinning.. but where is the oil for lubrication under these conditions? This is the reason they dropped premix with many modern bike engines etc..
He posed a very interesting hypothesis.. when using the omp, oil is injected into the engine constantly with rpms. With premix and no omp.. oil is subsequently injected only when the injectors are firing..
So on decel, your engine is pumping free air.. the injectors are zero duty cycle, the engine is spinning.. but where is the oil for lubrication under these conditions? This is the reason they dropped premix with many modern bike engines etc..
#11
^ Exactly.
So if you are relying solely on premix in your tank for lubrication, it stands to reason there is no premix oil being injected during fuel cut. At idle your injectors are operational however usually on decel they are at zero duty cycle.
So if you are relying solely on premix in your tank for lubrication, it stands to reason there is no premix oil being injected during fuel cut. At idle your injectors are operational however usually on decel they are at zero duty cycle.
Last edited by ky7; 07-26-06 at 04:45 AM.
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I Dought That, When I Let Off The Gas At 5500 Rpm And Throw 3 Feet Flames, I Must Has Gas Going Even With No Accel.....ive Used Premix For 6 Month With No Problems
#14
If you are throwing flames on decel, you probably have fuel cut disabled for higher rpms? Not everybody does this. Just because you let off the throttle or cut fuel does not mean the engine will stop making a lot of noise. You will still hear the motor running / pumping free air. An engine is just an (extremely inefficient) air pump.
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It will only throw flames right when you let off the gas becuase you just closed the throttle plates, cutting the airflow abruptly but it takes awhile for this to reach the sensors thus fuel is still injected leading to an overly rich condition.
The other way to throw flames on decel with the stock computer is to barely put your foot on the throttle, ticking the tps into still injecting fuel.
If you have an aftermarket ECU depending on how it is set up it may not cut fuel on decel leading to extreme flameage.
The other way to throw flames on decel with the stock computer is to barely put your foot on the throttle, ticking the tps into still injecting fuel.
If you have an aftermarket ECU depending on how it is set up it may not cut fuel on decel leading to extreme flameage.
#18
Originally Posted by drago86
It will only throw flames right when you let off the gas becuase you just closed the throttle plates, cutting the airflow abruptly but it takes awhile for this to reach the sensors thus fuel is still injected leading to an overly rich condition.
The other way to throw flames on decel with the stock computer is to barely put your foot on the throttle, ticking the tps into still injecting fuel.
If you have an aftermarket ECU depending on how it is set up it may not cut fuel on decel leading to extreme flameage.
The other way to throw flames on decel with the stock computer is to barely put your foot on the throttle, ticking the tps into still injecting fuel.
If you have an aftermarket ECU depending on how it is set up it may not cut fuel on decel leading to extreme flameage.
Must add that I think the seperare tank for the metering oil pump and using 2 stroke is a better solution than premix but you better not let that tank run dry!
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