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XL185s

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Hi Guy,s

I have an XL185 engine, can i use any reground cam or Head as long as it is from the same 2V family, XR200 or early ATC 200?

There appears to be conflicting information passed around.

Looking to possible get a Hi performance Piston, head and cam from a ATC guy.

Thanks, Mark

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You can use ATC200X top end parts as well as xr200 top end parts. The heads, cylinders cams etc will all bolt on. The cylinder difference is just bore size (63mm to 65.5mm) An 83 - 85 ATC200X cylinder and piston is a good bet. Bigger fins for better cooling and I just happen to have a resleeved cylinder for sale that will take up to a 69mm piston. Currently on 67mm the same as XL, XR and ATC big bore pistons. Any aftermarket xr, ATC 200 cams will also work.

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And there are differences in the cams; the XR185/200 cams are all the same and the most aggressive, all other are various degrees of milder. Some like the TLR 200 don't have the extended left end for the CDI because they use a crank sensor.

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