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Old 07-30-2009, 01:56 PM   #1
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Default Temp Problems

I am running a Thunder Tiger ST-1 with the stock motor and pipe set up and I am having a problem with the temp. I have always been told to set it where the power is consistant and you have a steady smoke from the exhaust. I have doing this but it alarms my temp sensor which is set at 275. If I run with the body off I can keep it around 200 but as soon as I put the body back on it runs at 280-290 and yesturday it even spiked at 330. I run a cold plug and have so many holes in the body that are so big it is not legal at sanctioned events anymore. What can I do to get the temps down? I have only had 1 run with the body on stay under 260 and the motor was set so rich it could barely pull itself. Any help would be appreciated.
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Old 07-30-2009, 03:16 PM   #2
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Your best bet is to read over the tuning bible thread at the top of the page.

Off the top of my head I'd say check your air filter to make sure it's clean. With the body off your getting more air not only over the head but also over the carb.
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Old 07-30-2009, 04:10 PM   #3
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if you have another temp gun or sensor you can borrow to double check yours. sometime temp devices are way off, and can throw you off, on your adjustments.


or try some sprinkles of water. water boils at 212F so you can tell if its just boiling or turning into instant steam.
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Old 07-30-2009, 06:04 PM   #4
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x2 my losi gun will read 20 degrees higher than my exergen gun
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Old 07-31-2009, 05:24 AM   #5
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I usually check it with a spare gun a sometimes a third, and the spektrum sensor is always within 5 degrees so I am sure it is close. Is it better to just make sure I have the smoke trail and not worry so much about the temps? I have seen revos that wont run right until the motor hits the 285-290 mark but the driver keeps the smoke and does very well, could mine be like that and just wants to be run hot?
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Old 07-31-2009, 05:35 AM   #6
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Most guys will tell you to tune to performance with smoke, and not to focus on temps. With comming so close to that 300 mark though I'd say you've got something going on... Someone will correct me if I'm wrong but last range I've heard on temp were 220-265 depending on the mill.

How's your idle gap? I know I forgot to check a mill I had taken apart and cleaned. My needles were so far off to keep it running that any little change would throw it all out of whack.
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Old 07-31-2009, 01:52 PM   #7
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Thunder Tiger engines tend to run a little hotter. My dad used to race for them and always came in at between 275 and 300. He was running the Pro .21 at the time. I'm not saying I'd run it at 300, but I don't think 260 to 270 would be bad.
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Old 08-01-2009, 12:24 AM   #8
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Quote:
Originally Posted by Miniracer23 View Post
Thunder Tiger engines tend to run a little hotter. My dad used to race for them and always came in at between 275 and 300. He was running the Pro .21 at the time. I'm not saying I'd run it at 300, but I don't think 260 to 270 would be bad.
Yea they do run a little warm, however it sound like he may have an air leak, which will cause higher temps my last TT motor didn't run strong unless it was 250-270, but with the 300 and up temps, prolly an air leak.

Check you fuel lines and tank, then check you carb, may need to put some high temp silicone where the carb meets the block...
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