What mechanical adjustment or any type of adjustment could you make to a small engine to make it faster?

Question

like in the case of a go cart or a lawnmower(those that you drive of course)...thanks

Answer 1

Assuming that your small engine is a two- stroke engine

(one revolution per firing) then here are several things that you can do to increase the power of your small engine:

1. Grind down your cylinder head slightly to improve the compression ratio. This has to be done in a machine shop to ensure that you maintain a flat surface for the gasket face.

2. Slightly increase the area of the intake and exhaust ports.

3. Golf ball ( make some shallow cavities using a blunt drill bit) the skirt of your piston to increase the lubrication area

( which also serve as the cooling area of the piston).

4. You may replace the exhaust pipe with one that does not have a muffler but be sure the replacement is long enough to avoid a very high pressure difference between the cylinder space and the exhaust space which may damage your engine.

5. If you need more power, you can also have your cylinder rebored to an allowable oversize then replace your piston rings correspondingly.

6. Replace your spark plug with a platinum spark plug.

Answer 2

Change the final gear ratio

Remove the muffler

Install a free-flowing air filter

Answer 3

Not much unless you rebuild the engine, perhaps with higher compression, or a better carbuerator.