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7/26/2009
Location
Arlington, TX
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moto116
7/11/2010 8:01am
7/11/2010 8:01am
Edited Date/Time
1/26/2012 4:13am
I went to start up my bike after 4 weeks of not riding (bike ran great when i shut bike off). The kickstarter wouldn't budge. Took off the head and cylinder and found deposits from the fuel at the top of the piston. There were large chunks of deposits and looked like it basically corroded the top of the piston. I believe the race fuel i use is true blue 110 octane.
Is this leaded fuel, is that why it did that to my piston? I store my bike in a really damp barn at my parents house because that is my only option, did the moisture and dampness cause this?
Please help with this problem. Has anyone ever heard of such a thing?
Is this leaded fuel, is that why it did that to my piston? I store my bike in a really damp barn at my parents house because that is my only option, did the moisture and dampness cause this?
Please help with this problem. Has anyone ever heard of such a thing?
Only way to prevent it is to run some pump fuel through before putting it away or shoot a little WD40 in to displace the moisture.
thanks again for you help
The Shop
Here's an avgas price finder.
100LL
Most race fuel is not corrosive, the environment you are storing the machne is likely more to blame.
Always drain fuel from carb/tank after each use, especially if pump gas, the ethanol will gel in a couple weeks.....and ethanol does retain moisture that leads to corrosion
I have used C12 for 20 years and never had any trouble with corrosion......2 strokes that are using a castor premix oil (Maxima 927, Castrol "R", blendzall etc) will suffer from the oil's properties, the oil will cause corrossion during storage, but not the gas.
Compression ratio and timing control will determine which fuel you need, 13.5 will be best with 105 octane up to 117.....anything higher is not helping.
Mixing pump and race fuel does increase the octane but it will not be stable nor consistent, and you will never know what octane is actually attained, it is a bad practice to mix these as throttle response will vary.
This is not correct. Avgas is designed to prevent detonation during wide open throttle, sea level take offs. It is not designed for fixed throttle at high altitudes. All piston aircraft have controls to lean out the air/fuel mixture to compensate for high altitudes at a fixed throttle position.
BTW, for many of their early years, VP used 100LL as the base fuel for C12 and their other race fuels.
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