First, to fill you in. I have 4 nitro trucks and many planes with a pretty good ear and knowlege of tuning. I have the 2005 version Warhead, I have put the "Evo" upgrade kit in it...very nice and cheap cost. This truck runs very well. I am at some altitude {5000FT}
when I lean this motor out just enough that when it warms up it runs well, the temp climbs to 320-340 deg. If I richen it up and I mean very little 1/32 of a turn it four strokes and runs raspy slow. I dont want to over lean it so I barely turn it lean just until it cleans up and runs ok the Wham! Im over 300 deg. I have removed the motor , replaced carb orings and checked the motor for any potential leaks...none. Heres the deal too, its not sparattic, it idles very well and low and is sensitive to adjustments. This tells me I probably have no air leak issuses, so why does it run so hot? I run a med Mcoy plug and have used both Traxxas 20% and Odonnel fuel with no difference. Its not the end of the world if I blow this engine but it bugs me to shorten its life with out knowing why. My LOH have said "if it wants to run at that temp then so be it" So any ideas or have any of you have a sim situation. Maybe its just fine? I doubt it. Thanks for your time.

Good luck Keester! I too have a warhead (the true EVO) and I have come to realize that the super tiger likes to run hot. I have sealed the entire engine, new o-rings for the carb, and replaced the fuel line... no change. Mine also runs around 320 - 345. I've decided to just let it happen, now matter how lean or rich, I have probs. I've read a lot about it and tried all the tricks I have read about. I'm just waiting for it to blow then replace with a OS .30. I'm stuck too, don't really know where else to turn at this point. Good luck.

What temp does it run at with the body off? If it is fine you may want to drill some cooling holes in the windshield. You mentioned you checked foir air leaks on the motor but did you go ahead and seal it anyway? I had a leak on my carb and when I sealed that the temp went down roughly 50!!! Anyway, it does appear the ST motor is getting known for running hot but those are some things you could check. Maybe more money than you want to spend but [link=http://www.novarcproducts.com/headspages/duratraxheads.html]here[/link] is a place that has a bigger cooling head and it looks cool to! [8D] They have some other aluminum WH stuff also. Just make sure that smoke is coming out of the pipe when you accelerate so you are pretty sure you get enough oil in that motor.

my Warhead runs at 250-270 easily. I have the old version and only fill it to 1/2 tank, over 1/2 tank it runs real rich then will lean out as I go below 1/2, but as long as I tune it for 1/2 tank and don't over fill it runs perfectly and easily stays under 270 degrees, I am running the OS#8 plug I would try a OS plug and seal your engine, around the carb body and the pin. also I have cooling holes in my grill, windshield and rear fender, I get no difference with body on or off in temps. I assume you have done the pinch test for your low end needle?? if not run the truck stop and pinch the fuel line near the carb you want it to start to change RPM in around 3-4 seconds, and by 5 die. I have found this is also criticle for the supertiger engine. my engine really screems at 270 degrees at 250 it runs nice.

Decided to break down the engine and replaced some orings and used a very thin film of high temp silicone on all parts, back plate, carb. And bought a new throttle stop screw. Guess what, runs and idles like a dream, screams at top end and temp barely reaches 270 f. I'm glad I did this instead of burning it up. Its not as fast as my Revo or Savage with a XTM 457 in it but its now reliable, runs good and honestly handles very well. {probably because its slow} oh well this is all an obsession cleaverly disguised as a hobby.
Thanks to all for your input.
Keester