Nev, I would use John Deere valve caps for the 3/8 stem, originally exhaust, in the 500. Mine has 3/8 stems for both valves ,using a cut down JD inlet with a hard seat and a hardchrome stem.These are good for 5000hours [ in a tractor],a sight better than the soft rubbish sold by suppliers as replica...

I want to run an Amal type 276 [internally vented] carby on its side, i.e. with the mixing chamber horizontal.Assuming that the fuel level is correct, will an ordinary vertical type work this way,or will I need the fire brigade?Many thirties bikes were set up this way,but of course had the early typ...

Andreas, what Nev says is correct, HOWEVER most experienced engine reconditioners will not touch alloy bike heads, except to recut/face the seats. If your seats are badly sunk or have been deeply recut, usually larger valves can help.To replace the insert, first you need to know how it was put there...

Barry, Ariel oil tanks can be quite deceptive as return oil does not spurt out of a small hole, as in others.Air bubbles are what is mainly returned by a dry sump system.To be certain you will have to disconnect the return line to the tank and run it into a container ,then run the engine. I have see...

Ball bearings are definitely the way to go, RHP lipped rollers must be made of gold. Some sizes of plain outer race [unlipped] are available at more realistic prices from SKF.An alternative is to grind the mainshaft to 25mm and use ISO rollers if you must have rollers.The books suggest that VH had s...

Thanks Keith,I would have to have a think about a chrome one.I would probably go for a bare one. My Norton has an Indian chrome rim fitted four years ago. The chrome hasnt peeled it has just disappeared in patches, like the silver on a lolly.Theres no import or GST in Aus [yet] on items under $1000....

I would like to hear from an owner who has a replica tank made in India, as offered on ebay stores.I would particularly like an opinion from an Australian buyer.