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.21 Engine Temp?

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InfernoBoy

RC Newbie
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Just curious as to what the average running temperature should be for a .21 buggy engine - specifically a Sirio kanai edition. I am sure most buggy engines run the same temerature wise. I know it depends on the driver and how hard he/she is on the throttle. I have already blown an engine and do not want it to happen again. I have a temp gage and today I got up to 300 + degrees, and then let it cool down before making it richer and letting it idle a bit. It eventually cooled down to 190.

Any feedback would help - I do not want to make another $300 mistake!
 
300+ is too ot and 190 is too cold. You probably want to be at about 240-270 degrees.
 
Thanks - I figured 300 was too hot. Actually, it got down to 190 when I had it idle for a while - then I started using it and got it up to 250. Just as long as 300 - 320 is not dangerously hot then I feel better about what happened and that I did not do any damage. I am running it richer now so there should be no problems as it will run cooler.

Thanks!
 
300 320 is bad on a mill 240 to 270 is the best to run at over that you will start to cook your mill.
 
I have a vzb that I run at 220-240most of the time, but it seems to run the best at 240-260 tops. If I'm happy with 220-240, do you think I am hurting it running it low?
 
ya the 300+ is way to high, I run my WS7 11 @ 225 to 250 and it is happy there.
 
More than likely your fine. The only engine I've read about that run well and produce good power at excess of 260 is fantom's engines. I haven't seen anything about how many gallons people have been running through them.

Anyone will tell you that temp is just a guideline. Personally, I tune for temp, then tune for power. Most of what I've read is the reverse of this. But it works well for me.

I tune for temps between 220 and 260. If I can keep it below 260 and be happy with the power output, then I don't mess with it. If it exceeds 260 for power that I like, then I look for smoke and listen more closely to the engine to see how it reacts and sounds.

Some engine like to run hot, others don't.
 
Thanks for all of the good advice!!! I am gonna richen it up and see what happens. It was definately too lean, but it changes with the weather!
 
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