Originally Posted by jimlazaro
Hi everyone is it possible to change my os tz 3port to 5 port piston and sleeve or just the sleeve? I will race on outlaw. Pls. LMK guys and thanks.
Yes, but why... This new 3 port sleeve is a 5 port sleeve with the connector (rib) removed making it 3 port legal... I would recommend that you change out the sleeve, piston and rod. Then break it in.. and depending on how much time you have on the engine, the bearings may need to be replaced.