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Moe · **need some help tuning a new engine -** 02.20.2010, 02:07 PM

hey all,
I've just got my new OS 28xz. just finished running it in and i was being patient with it too. dont wanna spoil my first expensive engine.

anyway... after breaking in was completed i started tuning the engine. problem is, every time the tank is full, it seems to run rich. once it reach to about half a tank or lower it becomes quite lean.

is this normal? i didn't notice this behavior when i was using the 454 losi RTR engine.

car: Losi 8T 2.0
engine: OS MAX .28XZ
pipe: OS T2060SC
Plug: OS P7 medium
fuel: Sidewinder 30%

had to add another head shim to reduce the compression cause it was running really hot (0.2+0.1+0.1mm shims)

any opinion???

thanks

	(#1)
Moe RC-Monster Stock Offline Posts: 11 Join Date: Dec 2009	need some help tuning a new engine - 02.20.2010, 02:07 PM hey all, I've just got my new OS 28xz. just finished running it in and i was being patient with it too. dont wanna spoil my first expensive engine. anyway... after breaking in was completed i started tuning the engine. problem is, every time the tank is full, it seems to run rich. once it reach to about half a tank or lower it becomes quite lean. is this normal? i didn't notice this behavior when i was using the 454 losi RTR engine. car: Losi 8T 2.0 engine: OS MAX .28XZ pipe: OS T2060SC Plug: OS P7 medium fuel: Sidewinder 30% had to add another head shim to reduce the compression cause it was running really hot (0.2+0.1+0.1mm shims) any opinion??? thanks