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expansion chamber ??
Posted 04 December 2012 - 10:20 AM
Posted 04 December 2012 - 10:00 PM
. They don't work for adding horsepower to a 4 stroke engine as far as I know.
Posted 04 December 2012 - 11:25 PM
Posted 04 December 2012 - 11:41 PM
On 4 strokes (systems with valves, lol) bouncing back the pressure wave/stalling the gases exiting doesn't help when there is a valve in a way... lol
Posted 05 December 2012 - 01:38 AM
what would %10 do for out little motors i know it would cost a fortune to make one for our cars fmf has been making pipes for along time and can spend the money and time on r&d doing that for a little old subaru would fall under the catagory of wtf dude why it sure would be nice though
Posted 05 December 2012 - 02:36 AM
It then returns a positive pressure wave that stuffs the charce back onto the cylinder just before the port closes, giving a supercharging effect.
The pressure waves travel at the speed of sound, so this supercharging effect normally happens over a fairly narrow rev range, giving the famous 2 stroke powerband.
It doesn't turn it into a 4 stroke, the engine still fires once every revolution.
You could probably set up a single baffle cone to aid in extraction of exhaust gases but you'd really need one per cylinder which isn't really feasible with siamese exhausts.
Posted 20 December 2012 - 05:49 AM
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