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Mz 125 sm big bore

PostPosted: Sun Jun 25, 2017 10:20 pm
by Mzedian
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
Thanks

Re: Mz 125 sm big bore

PostPosted: Mon Jun 26, 2017 2:41 pm
by DAVID THOMPSON
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

Re: Mz 125 sm big bore

PostPosted: Mon Jun 26, 2017 3:36 pm
by Mzedian
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

Re: Mz 125 sm big bore

PostPosted: Mon Jul 03, 2017 4:18 pm
by stephendacosta
Torque specks should remain the same, unless drilled for larger bolts.

Re: Mz 125 sm big bore

PostPosted: Mon Feb 11, 2019 1:48 pm
by baroquenride
Is there a way to identify on the outside of the cylinder if one has a big bore kit installed?

Re: Mz 125 sm big bore

PostPosted: Mon Feb 11, 2019 9:17 pm
by DAVID THOMPSON
only if the guy that installed it marked the motor as modified

if its running good do not mess it up