Originally posted by Homebrewer
In addition to lowering the nitro or reducing the compression on this engine, many people have better luck tuning the engine with an aftermarket carb.
Mine runs good but seems to prefer a 13x6 prop over the 14x6 prop I intended to run in my engine.
Not required. The stock carb works just fine. Works just like a SuperTiger carb.
Looks like we scared him off. Unless he wanted more power, or cannot get lower nitro fuel, $85 for this engine is money worth spending. One of the most reliable engines I have stock with no mods. Turns a 13-6 at almost 12,000 RPM and a 14-6 just over 11,000, and 5% fuel is cheap, even if I have to special order a case of it. It will run 10% in the winter.