ORIGINAL: 1/8racer
i was breaking in m s7......and it says to run it on the track........do you guys think 180 is too high for its 4th tank
It is little low but if you are doing the breakin in cool temps you should not be alarmed but the ultimate goal is 200 to 210 degrees. After three to four tanks of driving the car around, dont be afraid to goose the throttle near full a couple of times just dont do it for more than a second or so. Try to do very small adjustments to the high end needle only as you lean it slightly, really shoot for that 200 degree range with lots of smoke. You can start racing it at the 8 to 10 tank range but only lean the low end to make sure she stays lit while you are waiting for the starting tone. Be very very very very patient waiting for the engine to make full power. At three quarters of a gallon, it will turn into a screaming snarling monster as it revs to the moon and sends your car cartwheeling off the end of the straight away. At about three gallons or so, change the con rod. This engine revs so high that when you take into account the long breakin and the high revs, you run the risk stretching the con and goose egging the brass bearings in the con. This messes up the timing of the engine and a failure and 30k rpm would not be good. This conrod change reccomended for all Noverossi based engines. If you add a thin shim to the head botton and run an 086 pipe or equivilent, it have even more low end pull and scream even faster. I run mine on 20% odonnel and nitrotane and they are ballistic. 9.5 gallons on one of mine and it is still faster then the one I have with 3 gals on it. This engine rips with almost no pinch on the piston and sleeve but dont change it until the engine starts running erracticly.