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CMB .21 GREEN HEAD conrod/piston

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Old 08-09-2010, 12:32 PM
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Default CMB .21 GREEN HEAD conrod/piston

I just pulled my engine apart. I need a new conrod & piston The conrod bearing fell apart into my hands . I believe it's a long stroke Looks to be 1"260mm center to center.THE crank has LM stamped on. Anyone? Anyone have one for sale??
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Old 08-09-2010, 03:06 PM
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Default RE: CMB .21 GREEN HEAD conrod/piston

Don't know if it will fit your, they might be able to get you the right one:
http://www.pmbmodelboats.com/cmbspares.htm
Another place in Germany:
http://www.cmbdeutschland.de/english..._rs_gasoil.htm
An interesting beast
http://www.cmbdeutschland.de/english..._rs_gasoil.htm
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Old 08-09-2010, 03:22 PM
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Default RE: CMB .21 GREEN HEAD conrod/piston

neil, your motor is the second generation of the .21 LS. the first version had a silver case. the "evo 2" has the black case. con rod part # is ART.C91211, & the piston & sleeve (not available separately) part # is ART.C91208. i have both models of the .21 LS, but only have the parts sheet for the evo 2, so i don't know if they share the same rod. check out "butik evolution racing", they have cmb nos parts, & other brands, also . stu barr or mike hallam on iw may know.
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Old 08-09-2010, 06:17 PM
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Default RE: CMB .21 GREEN HEAD conrod/piston

Thanks guys I did sent out a Email to "butik evolution racing"
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Old 08-10-2010, 09:51 AM
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Default RE: CMB .21 GREEN HEAD conrod/piston

lmk what they say, & the prices, neil.
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Old 08-10-2010, 11:39 AM
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Default RE: CMB .21 GREEN HEAD conrod/piston

Well I have this engine almost new just been started. Stu does not have parts for it.The engine as well as the parts are no longer being made by CMB.Im in the same boat with parts.I am a litte hesitant about using it.
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Old 08-10-2010, 12:12 PM
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Default RE: CMB .21 GREEN HEAD conrod/piston

I guess I got a loser in the CMB engine,Looks like a parts engine .It was e-bay deal LOL The picco also a E-bay deal NIB I will stay away form E-bay on nitro engines 1 for 2 on on the buying
I did refit my Picco P5 to the MM 18 hull The aftermarket carb has been,replaced with a old perry carb. I wanted to use the zoom carb. not a fit I have 3 OPS .21 there carbs is a slider,more room needed. My wide header doesn't like the picco exhaust. At least I have a few choices in engines We run this weekend . I never got a response from the emails yet I have a few conrods setting around . let me see the piston can be re worked ,lost a piece from the bottom of the piston. Bearings are fine.
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Old 08-10-2010, 02:04 PM
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Default RE: CMB .21 GREEN HEAD conrod/piston

We have a match in my conrod collection. I also have 2 pistons NIB very close. I dressed up the bottom of the old piston Good to go The new piston need some laping, I hope to finish out the season. my CMB /zoom carb is back I need to do a wax test on the head. I have .005 on the button now. I'm looking for .007 total
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