Mz 125 sm big bore

SM, SX, RT, FunX, and models re-branded as ATK in U.S.

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Mz 125 sm big bore

Postby Mzedian » Sun Jun 25, 2017 10:20 pm

Hi just have a question I've got a big bore 180cc kit for my mz got all the bits for the carb aswell so is tuned to run the big bore, just curious to know if I will need to tighten it more than the torque settings to the book indicate as it's a bigger gasket etc or if it should be done to ft
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Re: Mz 125 sm big bore

Postby DAVID THOMPSON » Mon Jun 26, 2017 2:41 pm

these kits were rare when they came out
so info about them is in short supply and the originals were only 150cc or less
lot of people had a lot of problems with them
and i have had very little info pass by me on them....

hope you have spares to put it back if it goes bad
Dave 2002 MZ RT125 +1995 Saxon Tour (rotax500cc)
1997 MZ Skorpion Traveller added 6/13/09
Located in WV USA
"I like the road less traveled if it's PAVED!"
E mail wd8cyv at yahoo dot com
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Re: Mz 125 sm big bore

Postby Mzedian » Mon Jun 26, 2017 3:36 pm

I've got another bike in bits and two spare engines, including brand new piston and barrel for the 125 just thought I'd give the big bore a go see if there's improvement if it fails just resort to the original
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Joined: Tue Mar 03, 2015 6:35 pm

Re: Mz 125 sm big bore

Postby stephendacosta » Mon Jul 03, 2017 4:18 pm

Torque specks should remain the same, unless drilled for larger bolts.
Stephen DaCosta
1995 Skorpion Sport; ten-MZ 125's;2009 BMW G650GS;1981 GS450 Suzuki Roadracer
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Location: USA, Chagrin Falls, OH Near Cleveland

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