Need power, but theres a catch.

[striker1001]

Alrite guys, i gota a q. I want more poer out of my 400, but i have to keep it on 91 octane. I ride in Mexico alot and u cant cross gas across the border or theyll just throw it out and the highest octane in mexico is 91. So how much more can i do to it while still runin 91?

[400exstud]

I would bore it out and try to find a 10:1 compression piston. Anything after that should be fair game.

[-copyguy-]

just run it on some of that mexican tequila :p

[400eXr1d3rZ]

Get a JE 10.8:1 piston THERMAL COATED, so you can ride on 91 or 93 SAFELY

[johnsls]

Get what 400eXr1d3rZ has or what I have (see below in my sig.)

If you build it right and install everything properly it'll run forever..

TAKE CARE OF YOUR S#IT

:cool: