Originally Posted by Scott Fisher
The LS is the new version of the NSR. These two engines have the same rod, piston and crank. They have a different sleeve.
The LL is the new version of the RR. As above. These two engines have the same rod, piston and crank. They have a different sleeve.
The important differences between the NSR and the RR is they made the RR a longer stroke engine. In order to do this, they changed the piston, sleeve and the crank. Same for the LS vs the LL. Different piston, sleeve and crank.
All of them use the same rod.
hi, I have a NSR S5 that I want to change to a 3 port for more torque - short track, unfortunately none of the local shops have S3 sleeve. From the above info. it looks possible to do this by fitting a LS 3 port sleeve into my existing S5. Can anyone confirm if this is really the case? I hate to be spending on the new sleeve to find out that it doesn't work, worse blowing up the rest of the motor. Cheers.