Originally Posted by
razzor
Somehow that settings dont sound right.
Reset carb to factory settings and retune.
also have you changed out the shim on the engine ??
The motors come with a spare shim in teh box.
Between the 2 shims you should have use the thicker one with 25% nitro.
Use attached settings a a reference.
Hi razzor, thanks for replying me and the referance file. May I know below is the factory setting? By the way, may i know I should put how many mm shim inside the head with 25% nitro. Thanks.
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Adjust needle settings before putting the car on the track
Once the engine is running and has come up to operating temperature (within 15-20 seconds) proceed as follows:
Take the car off the ground, and open the throttle fully.
Main needle
SETTING:
Close completely the main needle and open it 2,5 turns.
Low speed needle front
SETTING:
Close completely the low speed needle front and open it 4 turns.
Low speed needle rear
SETTING:
Close completely the low speed needle rear and open it 1 turn.
Idle speed
Take the car off the ground, and open the throttle fully for 2-3 seconds. Close the carburetor and check the idle speed that occurs immediately after.
- If the engine stops almost immediately, turn the idle adjustment screw clockwise to increase the idle RPM.
- If the idle RPM is too high, turn the idle adjustment screw counter-clockwise to reduce the idle RPM.
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