Dose the zongshen 175 run the same bottom end at the 155z?

[aitken]

hey guys just wondering if use could help me out i cant really find any real info on the new zongshen 175 other then motor specs people are saying there the same bottom at the new 155z motors? any info would be great! thanks

 

[wogtaz ryder]

exactly the same as the HO155 except +3 bore = 171cc ..

If someone would look at them there would be more details , some have said they run a decomp cam and maybe a bigger valve or 2 but no one has even taken a cam cover off by the sounds of it...

but theres is nothing different in the bottom eend..