Originally Posted by xr4x4rs

the 620 ti had less horse power at 180bhp
and the tomcat had 200bhp as standard

the engine mounts are the same ( i think) and i know the tomcat has an oil cooler mounted at the back of the engine not sure on 620

also there differnt mangagement aswell this decides what the best engine is

early 620 with dizzy are strong engines with crap management late ones are the other way round coil pack is choclate pistons

what are you looking to do with the engine