mach4man

Are they any good? A complete piston kit is cheaper than a set of genuine rings so I wonder if they are good value or too good to be true? Any ideas? Cheers Tom

Thanks for that Craig. I'll take all this to work on Monday and get everything measured. Starting to remember while I love 2 strokes!!! Tom

Does anybody have a camshaft they could measure the journal diameters of please? I have just been lucky enough to pick up a head off Ebay with "good useable cam journals". Problem is, when it arrived the cam I have is looser in it than in the head I already had. In fairness they do look OK, but there is a lot of up and down play at the end of the cam. Is it possible there are different sizes of cam bearing or I have just been stitched? I was working on previous advice that all these cams are the same, (apart from profile and timing), be it CB SL or TL motors. Can anyone help? Cheers Tom

Thank you gentlemen. Some good pointers there. Have so far removed tp end of the 125 engine, got 56.5mmm bore with no measurable wear, and a dished piston, and broken rings! So it looks like a standard TL set up. A hone and ring set should fix that. Must have the 98 link chain because it was already on but will count the links to make sure somebody did not "wing it " with the wrong one. Have also split the head, and while the cam and bearings look good, (no scoring at all) the cam is very loose. and the hollow bore was bunged up with gasket goo. Rather than split the 100 engine to measure combustion chamber volume, I think I'll have a bash at bushing this head, One less motor in bits in the shed is always a bonus too. Then strip the bottom end and make sure Mr sealant has been too busy down there. Last worked on one of these back in 1977, when my long suffering SL125 gave up the ghost, but it's all coming back to me now. Thanks for the help everyone. Tom

Apologies if this has been covered anywhere before, but I'm new here. Have just come by a TL125 project. The engine and frame nyumbers relate to a 1973 bike but it has a 2 piece head fitted. Also, currently fitted inthe bike is a CB100 engine complete, also with a 2 piece head. The cam bearings in the TL motor are goosed, but the CB seems fine. My question(s) are. Is it OK to fit the 2 piece head type 124cc top end on earlier 122cc engine? This engine had a problem many years ago, could the fail be down to mis matched parts? If you can mix the barrels will it be OK to use the CB100 head on the 124cc barrel? Thanks for any advice. Tom

New boy here, well new (old) man really. I'm Tom from sunny derbyshire. My first involvement with trials was observing the Peak trial back in seventies. My abiding memory is an encounter with Jack Matthews which I managed to survive !!! Have always threatend to do a trial but never have yet. Hoe to do a cuople of easy type events next year. Have 199 Sherpa 350 and TL125 both projects. See my post in Honda section! Cheers everybody. Tom