showtime45 Posted February 13, 2011 Report Share Posted February 13, 2011 Can some one tell me the standard piston diameter for a 1974 TL125??? I have 2 manuals and they both give a different size. Thanks Quote Link to comment Share on other sites More sharing options...
malcontent Posted February 14, 2011 Report Share Posted February 14, 2011 Can some one tell me the standard piston diameter for a 1974 TL125??? I have 2 manuals and they both give a different size. Thanks I just checked my Clymer manual for 125cc engines,TL 71 thru 74 shows piston diameter of 55.97-55.99mm,bore size for those years 56.00-56.51mm. Hope that helps you.Cheers Mal Quote Link to comment Share on other sites More sharing options...
showtime45 Posted February 14, 2011 Author Report Share Posted February 14, 2011 I just checked my Clymer manual for 125cc engines,TL 71 thru 74 shows piston diameter of 55.97-55.99mm,bore size for those years 56.00-56.51mm. Hope that helps you.Cheers Mal Thank you my friend!! Quote Link to comment Share on other sites More sharing options...
tlrmark Posted February 14, 2011 Report Share Posted February 14, 2011 Can some one tell me the standard piston diameter for a 1974 TL125??? I have 2 manuals and they both give a different size. Thanks 1973,1974,1975 tl125 are 56.0 mm piston = 122 cc 1976 tl125s are 56.5 mm piston = 124 cc Also when Honda increased the displacement in 1976 they went from 8.0 to 1 compression ratio on the early engines to 9.0 to 1 compression ratio on the 124 cc engine. Hope that helps Mark Quote Link to comment Share on other sites More sharing options...
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