Hi all took me a little longer to get round to start up basically gave everything a dam good clean up while it was all off the bike as well as checking and cleaning all the electrical connections, found a couple that were corroded! Built everything back up! (glad I took a load of pictures of how eve...

So had success with the head gasket grinded out The front stud hole to the old gaskets diameter and gently cleaned up the burrs with a porting file! All back in and head on compression test from 60psi to 160! Really pleased with that!! Stripped off the rad to give them a good flush out, managed to a...

Also premix in the tank why didn't I think of that!!?

Thanks didn't think about grinding! Also I have some punches I could practice on the old gasket see which method works better!

Thanks again guys!

Thanks Keith I don't have the kit or knowledge to do that level of test! How would you fellas suggest checking the oil pump without running the engine? I think the main problem was the inoperative power valve messing with mixture? As the bike was oiling fine before hand? Update new piston, base gask...

Thanks both for the guidence! I magaged to find a wosner 66.4 piston from pj motorcycle engineers in Wolverhampton who where extremely helpful!!! I got a top set of gaskets and a small end bearing (gen Honda) piston, g pin and C clips so good to go on the rebuild! I've lightly honed the bore striped...

Hi all again i see a few have given me other leads to look at! I have stripped the engine removing the head and the bore!! Here what I found! 1. The h gasket seemed OK (I know it would be hard to see a fault!) but the front threaded stud bolt was very oily and carboned up could this of been where pr...

That is a pain!! I found a engine break down on line so that's a good start! Will get the gaskets etc from leisure trail too as I need a few extra bits as well! hopefully get away with the bore like you say! Any extra bits I can do while I'm there?

Kind regards Sam

Hi kieth thanks for the heads up again! I will strip down to investigate then! Do you know how to post pics so I can show you my progress and get your thoughts? Kind regards Sam

Thanks again time and help!! I've had the exhaust off checking and attempting to clean and ckeck movement of the power valve! What do you mean by smearing? Piston looked OK I thought? I also checked it the other side as I had the reed valves out too for inspection?

Thanks Sam

Hi thanks for the info!! The bikes not siezed I will take a look at the head is the top end easy enough to get to or is it an engine out job?

Kind regards sam

]Hi all struggling a bit with the old girl! After sorting a when on demand problem (power valve cables had rusted to the butterfly!) she ran the best she had for years power all the way up again! Big big smiles! Then suddenly thud and she stalls wasn't fuel to instant! And would not start again burb...