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Author Topic: Head/Piston clearance RM125M  (Read 7894 times)

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Offline Graeme M

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Re: Head/Piston clearance RM125M
« Reply #15 on: January 01, 2008, 06:17:17 pm »
It's an old school 125, who needs torque?
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Offline Freakshow

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Re: Head/Piston clearance RM125M
« Reply #16 on: January 01, 2008, 07:58:06 pm »
What model CR pistons fit ? and does this carry over to being able to be used in a TM250 ? i got a barrel here on 1mm that needs loving.
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Offline Graeme M

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Re: Head/Piston clearance RM125M
« Reply #17 on: January 01, 2008, 08:12:28 pm »
I don't think it works for the 250, it just so happens that the CR and TM125s share the same bore/stroke so the pistons are interchangeable with a little careful trimming. I am no expert on this, but I think the 74-77 CR pistons fit the 73-75 TM/RM125.

My collection of pistons include TM, TS and CR, all of which differ slightly in length of skirt, height of crown, and cutaway. I am sure there are slight differences in power as a result, but given that these things don't make much power anyway I don't think it matters much...
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