pathfinder813 Posted February 24, 2012 Share Posted February 24, 2012 hello all i have recently bought an old tzr 125 and on my way to restoring it but i have hit a wall so to say i need to get the barrel rebored as there is blow back and carbon on the side of the piston this is the (wall) so to say do the tzr have a chrome bore or normal steel any help is much appreciated the bike is the 1990 model thanks Link to comment Share on other sites More sharing options...
blackhat250 Posted February 24, 2012 Share Posted February 24, 2012 Welcome pathfdr" google the problem " unlss you have a manual... chrome barrel are hard, measure to see if out of tolerance ,, maybe get away with new piston Link to comment Share on other sites More sharing options...
2 Wheels Posted February 24, 2012 Share Posted February 24, 2012 They dont have a chrome barel, and yes you can rebore,,,,,, but like blackhat says,,check tolerence's before you do anything Link to comment Share on other sites More sharing options...
pathfinder813 Posted February 24, 2012 Author Share Posted February 24, 2012 thanks to both of you it really helping me Link to comment Share on other sites More sharing options...
Moderator Airhead Posted February 24, 2012 Moderator Share Posted February 24, 2012 might only need new rings and the ring grooves cleaning, dont rebore without proof of wear to the bore! Link to comment Share on other sites More sharing options...
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