jackdung Posted November 21, 2016 Report Share Posted November 21, 2016 dear all, i wanna upgrade my 4k engine power up alittile but don't need to change anything in engine. does anyone have best suggestion? thank you very much! Quote Link to comment Share on other sites More sharing options...
B.L.Z.BUB Posted November 21, 2016 Report Share Posted November 21, 2016 Have a read of this bro. http://www.rollaclub.com/wiki/index.php?title=Tech:Engine/K_Series/How_to_build_a_tough_K_motor 1 Quote Link to comment Share on other sites More sharing options...
ebbieajam Posted November 23, 2016 Report Share Posted November 23, 2016 these are well performing engines, a little here and there makes a noticeable increase in power , simple mods like free flow exhaust and webber downdraft is a reliable everyday run a round. next step further maybe add lighter flywheel and aftermarket camshaft Quote Link to comment Share on other sites More sharing options...
jackdung Posted June 21, 2017 Author Report Share Posted June 21, 2017 thank you! Quote Link to comment Share on other sites More sharing options...
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