A a so called 'berg expert rebuilt my 650 lump before it came into my hands. I was struggling to get the motor going but when I did, it blew large clouds of blue smoke. So I reluctantly decided to strip and inspect. Behold the attached images :shock:
It would seem this had been assembled by plumbers mate what with all the silicon bath sealant abounding :roll: Have a look a look at the reed valve and you'll see that there are lumps of silicon holding it open, hence why it blew the smoke. This silicon was blown up the reed valve port and was probably the excess squeezed from assembling the crankcases
Look at the oil filter housing. That was there behind the oil filter, it hasn't fallen in from disassembly The feed to the inlet rocker shaft was blocked with silicon and needless to say the feed to the bigend was probably compromised too
I also discovered the replacement inlet valve did not seal to the seat so that won't have helped
The builder is UK based and is known to some on this forum, but i won't post who it is but if anybody wants to know who it is, pm me.
berg builders, I've sh*t 'em :evil:
It would seem this had been assembled by plumbers mate what with all the silicon bath sealant abounding :roll: Have a look a look at the reed valve and you'll see that there are lumps of silicon holding it open, hence why it blew the smoke. This silicon was blown up the reed valve port and was probably the excess squeezed from assembling the crankcases
Look at the oil filter housing. That was there behind the oil filter, it hasn't fallen in from disassembly The feed to the inlet rocker shaft was blocked with silicon and needless to say the feed to the bigend was probably compromised too
I also discovered the replacement inlet valve did not seal to the seat so that won't have helped
The builder is UK based and is known to some on this forum, but i won't post who it is but if anybody wants to know who it is, pm me.
berg builders, I've sh*t 'em :evil:
