have u considered the thunder tiger engines? i got a thunder tiger pro21bxr in my savage and i can beat my mates kyosho inferno 7.5 sports that has a .21 in it...
these engines are REAL good and they last ages,i stopped counting thegallons at 12 gallons and its still going strong and its also internally modified and i have modified it abit more and it hauls ass,and the fuel economy is great!!!! i run the 160 cc tank in my savage for around 18 minutes before i gotta top up and im using 20%,engines dosnt overheat and has pinch like from the day i bought it
VERY nice engine,consider buying 1
FG leopard comp w/Trevor Simpson 28.5 bzm crank
HIP Baja 5sct
AE tc5 3.5t speed monster,Futaba 4pks
Raptor G4 ,Raptor e550,Gaui x5,Mini titan v2,Precision aerobatics bandit 4s monster,Carbon z scimitar Jr 11x