2650kv in rc8

i just got my rc8 running with a 2650kv castle motor and a mmm with 4s 5000mah 30c lipos. and its geared 44/16 and does not seem all that fast. i was running it on the track and all the nitro guys where kicking my butt on the straight away but when it came to the turns and jumps i was doing ok cause it has a ton of bottom end power.

after about 15mins of drving i would bring it in and temp it and the motor was at 140 and the esc's fan was not even on so i did not check it.

do you think i could go up on the gearing and if so how far do u think i could go up. maybe a 19t pinion.

when i drove it nitro it had to have a 17t clutch bell to have any good power cause of the weird gearing the rc8 has. could that be why using a 16t pinion is not enough.


thanks.