Do not use two stroke outboard oil. I saw a new stihl chainsaw start smoking after just a few hours work. Bores were shot. The dealer asked the owner, a professional tree feller what oil was being used. The reply was outboard oil. Apparently the owner ran out of air cooled 2 stroke oil but had some ...

Thanks Simon and Nev, I had not thought of the cage being a possible problem. Nev I have sent you a PM
David

I have a VH bigend bearing in which the conrod has tracked badly to one side. When I spin the flywheels after centering the conrod it tracks to the side within a few turns. I have checked the conrod and it is straight. The flywheels have a total runout of .001” with about .0005” runout per shaft ...

A standard hot up in Australia was to remove 1/8” from the cylinder base flange to increase compression ratio, so it is possible that the compression plate is there to restore or partly restore standard compression. The VH cylinder base flange is 1” thick so if it is less, that will be the reason ...

I found an older post by Alan Moore which gives the width as .762" whereas the BA spacer is .435"
viewtopic.php?t=9604
David

Can anyone provide dimensions for the gearbox sprocket spacer 3112-33 for a CP gearbox, in particular the length, thankyou
David

The 54 and later mk2 had a different frame (known as the dogleg frame} to accommodate the SU carburetor. The HS2 is even higher than the SU fitted standard, so it will not fit.
David

Vincent
There is no problem in fitting the parts that you have. I have fitted the exact same parts to my VB (no oil pressure gauge).
The ball and spring are there as a back up in case of the oil pump ball not seating properly, in which case the back up valve ensures the oil feed supply is ...

Coupled as a square 4. Counter rotating cranks yes but the drive side is not connected to the timing side of the engine external to the crankcase. The single crankcase has not been widened to fit coupling gears and I cannot see how coupling gears could be fitted inside standard width crankcases ...

Vincent
thanks
yes that is the bush I was after. a quick lathe job will have it.
thanks again
David