honda gx 160

Starting pic with a pair of shoes. This engine will be used for the build. It is bought used and has been in service since 2003.

Oh so heres the deal, I just got a brand new Honda GX160 (not a drop of gas or oil has ever touched it) off craigslist and when taking off the stock Jiang Dong I could not get the centrifical clutch off. Not the clutch acually but the bolt at the end of the shaft. I treid diffent things but all...

i just picked up a cl-1 cam from OldMiniBikes.com for my gx 160 an my ?????? is should i use 18 lb springs or leave the stock springs in ..the motor has carb from 390gx on it home made header arc air intake i know all that matters in over power an the work it puts on the stock spring ....trying to...