May 23, 200719 yr In what way did the RS200T engine differ from the XR200 model? Cams, piston, gearbox ratios??? These would be the obvious pieces. I believe they were hand built by RSC so they must be different. Secondly I am looking for a new carb. Does anyone have jetting details? Any replacements you recommend. Thanks for your help.
May 23, 200719 yr The honda 200cc trials engines have a different head with smaller valves and ports, heavier flywheels and lower gearing. The cylinder has the same bore and stroke though and the casings and some of the internals are the same. A 22mm carburetor is what normally comes on these . I am using a 24mm with a 100 main jet ( bored out 22mm) with good results on my Tlr200. If you cant find an original carb, i think you can use one from a xl125 or cb125.
May 25, 200719 yr The honda 200cc trials engines have a different head with smaller valves and ports, heavier flywheels and lower gearing. The cylinder has the same bore and stroke though and the casings and some of the internals are the same. A 22mm carburetor is what normally comes on these . I am using a 24mm with a 100 main jet ( bored out 22mm) with good results on my Tlr200. If you cant find an original carb, i think you can use one from a xl125 or cb125. dont forget the rs engine is based on the xl 185 engine, where the tlr200 engine has a different ignition and no advance retard on the head, a much better system than the xr/xl design, why they did not fit it to these bikes at the same time is a mystery, also the tlr is 194cc where the xr200 is 199cc, there are a lot of differences, i have a xl125/185, xr200 tlr200 and now a crf230 and they look the same but once you dig deeper diferences stand out. an xl 125/185 carb will fit, but it gives it a lot more power and maybe too much for just trickling along slowly
May 25, 200719 yr on the RS200TS (same engine) the carb is the same 22mm as the SL125 and TLR200. main jet=105 (available 90-120), slow jet =38 although the engine was assembled by RSC, i think it's all standard honda meccano: http://tl.125.free.fr/MV102.htm (at the end of the article you can see whats parts are used) Edited May 26, 200719 yr by tlrs
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