Add a header and tuned pipe
the small canister type muffler can easily rob your engine of
power. a tuned pipe will give your engine heaps more power
and keep it running cooler.
its simple to install a tuned pipe just remove the stock muffler
and clean the engines exhaust opening. install a new gasket on
the engine and screw on the header. when the hader is in place
use heavy duty zip ties to hold the haeder and pipe together.
hold the opposite end of the pipe to the chassis with a peice of
wire.
The carburetor is opened by a linkage attached to the end of a
servo arm.If the linkage or radio endpoint adjustments arn't
setup properly the carby won't open up all the way and your
engine wont produce full power.
To check your carburetor remove the air cleaner and pull the
throttle trigger on your remote and see if the carby opens
up fully,if it doesn't then adjust the linkage till it does.
remove head shims
All engines have very thin head shims between the cylinder head
and the sleeve.You can increase power by removing the shims or
putting in a thinner one. It will make the combustion chamber
smaller causing more compression.
To remove the shims you must remove the cooling head by
undoing the screws, you will see the shims on top of the sleeve
or they might be stuck to the head where it meets the sleeve.
remove one shim (if there is more than one) and reinstall the
head.
if you do remove head shims I suggest you only use 5% nitromethane content
