spanky2002
08-08-2004, 09:08 PM
last month did a leakdown on a promax. 3 of the cylinders had 20% leakdown the other three had 12-15%. so, tore it down, bored to .015 over and put in some new pistons and reeds. after breakin, went for a ride expecting to see some better numbers but no change. top speed was almost the same actually 2mph slower (which i know could be from weather conditions). midrange didn't feel any stronger. could it be that the motor is still tight, or does a loose motor spin easier.