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JBOMBR
02-18-2004, 01:45 PM
FOR RACING MX WHAT WILL BE BETTER 12.5:1 PISTON
OR A 440 w/ 10:1 PISTON
ANY PROBLEMS w/ 12.5:1 OTHER THAN FUEL?
Dunesurfer
02-18-2004, 04:28 PM
A 440 with 12.5:1:D
cals400ex
02-18-2004, 07:19 PM
Originally posted by JBOMBR
FOR RACING MX WHAT WILL BE BETTER 12.5:1 PISTON
OR A 440 w/ 10:1 PISTON
ANY PROBLEMS w/ 12.5:1 OTHER THAN FUEL?


you will want to get the heavy duty studs and a new rod if it was me.
JBOMBR
02-19-2004, 06:25 AM
WITH THE 12.5 : 1 WILL IT WRECK THE STOCK ROD?
OR STRIP THE STUDS I KNOW BLOWN OUT HEAD GASKETS ARE A PROBLEM BUT I THINK THAT IS ALL THE MOTOR IS STILL TO NEW FOR ME TO JUSTIFY SLEEVING WHAT DO YOU THINK?
02-19-2004, 06:29 AM
Go with a 11.5:1 if you want it to be simi reliable..:eek2: 12.5:1 will need $300 more dollers in parts to keep the top of the motor together..:eek: LOL
JBOMBR
02-19-2004, 09:43 AM
11.5: 1 RACE GAS OR 94 OCTANE

I WILL PROBABLY RUN THAT PISTON W/ HOT CAM STAGE 2
UNTILL I GO W/ A REBORE

ANY OTHER HP MODS TO THE GUTS TO GET MORE POWER/SNAP?