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Hey 02GF74, I did not mention in my last posting .... I did not remove the valves to inspect the seat ... but I did fill the combustion chamber with kerosene / paraffin and let stand overnight .... nothing leaking out of the cavity into either tract. The valves would need considerable lift to...

Hey Fire-medic, I smoothed and polished the two matching indentations, I have not removed the valves to inspect the seats, I am going to assume ... yes, I know ! .... that the screw was dropped down the plug hole at some point by the previous owner. The engine has not run under ignition for a...

Hey Fire-medic, I suspected that whatever was preventing the engine from full revolution was in the front cylinders. According to the Yamaha guru Sean Morley : There is only one screw on the entire bike that even is similar to that and it's usually black. It is holding on the vboost brain box to...

An update on the jamming engine .... lifted the front cylinder head today and .... VOILA !!!... this little gem was resting on the piston top, there is JUST enough room between the piston crown and the combustion chamber top for the engine to turn over, but the screw had obviously shifted and...

Hey Fire - medic ... good to know that you are safe and well, hope that Patmax made it through ok. I agree , flood vehicles should be immediately scrapped and Titles cancelled. We see too many salvaged vehicles being passed along as " low miles Southern car " ... I complain about stringent Title...

Hey Fire-Medic. I hope that you got through the hurricane safely and without property damage ... what a mess. I just re read your posting ...., what would you want me to post about my Velocette ?

I had a 650cc Triumph Bonneville back in the mid / late '90's that I was considering converting to Dresda Triton spec., but good Norton frames were / are scarce. Rickman Honda is sweet .... handles the way a cafe racer should !.

Many, and deep are the complaints about Velocette machines, they are somewhat unique in that the factory hand built the engines, and, parts were " made " to fit by skilled fitters. I got my bike in parts, carefully rebuilt the engine, the bottom end ( flywheels ) and crank are built to within...

A bit / lot off subject .....my own " high cam " engine ... 1957 Velocette Venom.

I have the carbs closed off with pieces of rag. I used a semi flexible magnet to probe down the plug holes .... hopefully nothing made from brass / stainless / aluminium found it's way in !. I will only find out if the cam covers can be removed in situ by attempting ... I'll do that before...

Hey 02GF74 .... I have removed the starter clutch and flywheel, I re installed the crank shaft bolt with a spacer, still cannot turn the engine over a full 360 degrees. Thanks for the link for the 'scope. I don't know what would cause a valve to drop ... at less than 1 rpm., I will be removing...

Bad to worse just about sums it all up ... after I replaced the starter clutch the engine turned over on the button, I did not keep the motor turning over as the side cover was not in place and the gear train was not secured. The next day, I tried to turn the engine over and the starter motor...

My apologies to all who contributed to my " Puzzled " posting for the long delay. I was trying to nail down the lost ignition sparks, going through various testing with the help of Sean, suddenly, the motor would not turn ... yep ! ... the starter motor clutch had failed ... many thanks to Sean...

Hey MaxMidnight .... brilliant !!.... excellent tutorial. The boys at the Yamaha factory could learn from that. Thank you for taking the time.

Hey Keith ... sounds like a good tip ... I'm not quite at that point yet, but will bear that in mind ... don't fancy a face full of flywheel !.

Hey putin .... thanks for the idea .... will check it out

Hey MaxMidnight ... that is a handy reference guide ! .... thank you for posting.

A question .... what is the diameter of the centre bolt ?....I will be making from scratch and not using a " donor " puller.

Hey MaxMidnight .... thank you for the info ... no problem making that ..... thanks again...much appreciated.

Update ..... no progress on the ignition problem ... t now appears that the starter clutch may have given up the ghost ... pressing the starter button now gives a noise like a marble rolling in a tin can ! ... much help from Sean, thanks to 02GF74 for giving me Sean's link ..... many thanks to...