i have a tmaxx that i just put brand new trx2.5 in, broke it in properly and now it gets really hot (250+) without runnin it really hard and it bogs out really bad when in 2nd gear. i have spools in f/r diffs producing too much strain maybe??? ANYONE GOT ANY ADVICE?

mine does the some thing at about half a tank of fuel

Do u have good airflow going to the engine. If u are running a body then cut out the windshield and it will create more airflow or u can go with a rollcage like i did. I usually run with only the rollcage and it gets plenty of air to the engine to cool it off.

got a rollcage and its overheating from the start not just with half tank of fuel although the other day replaced the fuel lines and it got a lil cooler so now im gonna check the ful tank seal

richen the top end a little. If that doesn't help check for airleaks

According to Traxxas, overheating is over 270 deg. Traxxas engines have always run hotter then most other engines. Some info on the Traxxas FAQ page at http://www.traxxas.com/support/index.php?action=artikel&cat=108&id=316

top end is rich 4 3/4 turns out im thinkin air leak im gonna check it out tomorrow and as far as 270 deg thats true. mine usually will noty stay under 255 when i really get on the throttle

U could always upgrade your cooling head as well

if there is a air leak you will lean out the truck and damage the motor very soon.if the truck cuts out at half a tank the tank has a leak and needs replaced.make sure you have a hole in the window,the top end around 3 1/2 out and work it from there.get a temp gun for $30 and make sure what the temp is.250 is ok ,but if it goes over 270 for a long time you got problems.sounds like it needs tuned in.to run in anything under 40 degree's when its cold is going to make it hard to get a correct setting .