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Multi cylinder engines, such as in-line four cylinder engines, usually use carburetors for fuel supply. They are sensitive to the balanced length of the intake manifold. Have you ever had such an experience? The mixing ratio of a single cylinder is too rich, resulting in the cylinder not working...

hello everyone! I just want to make a four stroke engine recently. I would like to ask you about the angle between the camshaft. 1. The high angle cam in the automobile engine is 270 degrees. Is the included angle 90 degrees? I bought a toyan engine and their camshaft angle seems to be 90...

Hi! Have you ever encountered an engine valve leak? My engine valve always leaks. It will leak after running in for a while. If the valve is lubricated, he will leak a little. 45 # steel was used for my valve and it was simply quenched. How can I solve this problem? Thank you

Thank you very much. Someone knows where this came from.

Hello everyone! I made a distributor for my v4, and then I installed the V4 on the RC car. The distributor disturbed my receiver. How should I optimize it? Thank you

If a gas fuel, such as butane, is used, what structure of throttle should he use? Has anyone tried it? Thank you

I made a distributor for my v4, only 20mm in diameter. When the distributor is not installed on the v4, it will not leak electricity. When the cylinder is under pressure, it will leak. The gap is about 0.1mm. What is the reason for this? I use the igniter of the motorcycle, it seems that the...

My V4 is 3.5cc. How can I make a scraper ring? Smoking is really annoying. Sorry I can't publish piston pictures.