Fuelman
Posts: 1059
Joined: 12/31/2001
From: Jordan,
NY, USA
Status: offline
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quote:
Hey FUELMAN is white lightning ok to break in with it is 30% nitro and 8% oil. yes I know that it is a low oil content. but w/the higher nitro content the engine runs cooler. I think that most fuels have too much oil in them so you try to tune for performance and you lean it to much and end up burnning up your engine. plus with the lower oil content it seems to get up to operating temp faster witch would help expand the sleeve to reduce friction. I am going to finish putting my mach .28 on my LST in the morning and start the heat cycles. but should I use my sidewinder fuel that has 12% oil to break in with. will the extea oil help? It seems that the most important thing is the expansion of the cylinder sleeve in the break in. and yes I will clean out all of the metal shavings out before I start the break in and seal the carb and back plate. Thanks Kurt P.S say what ever you wan't. you wont hurt me. this All came from my little pea brain correct me in any way.
Kurt,
I personaly would use the 12% oil stuff for the first few tanks. Believe it or not, the higher oil content will help it come up to operating temp quicker than low oil fuel, and thats what you want at break in. The slightly higher oil content will also help all the brand new parts break in because the oil film is a little more abundent to help carry away the debris from new parts seating themselves against one another.
You can do it on the lower oil content fuel but my professional opinion is a better end result is achieved with a little more oil on the first few tanks.
Also, remember to run it crisp and clean and not too lean, right from the first start. Do not idle it on a box or just putt around, run the thing with some periodic high throttle runs to get your mixture set lean enough where it runs crisp and clean and rich enough where it does not sag at short high speed passes. Three or four tanks of the higher oil sidewinder should be more than adequate to get a nice sweet running engine before switching over to the 8% oil fuel. Always let the engine cool down (so it is comfortable to the touch), between tanks of fuel for the first three or four tanks. Remember that when you switch fuels, you will always have to retune to the new fuel. Give it a couple more tanks on the 8% before you start extracting maximum performance out of the engine. No need for a temp gun during break in because you need to resist the urge to see it read some magical number, use your ears.
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Fuelman
Cooper Fuels LLC
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RE: Nitro Engine Care And Breaking In/Starting Instruc... - 
