MaxMidnight is right - you can spend lots of money to make a Vmax faster, but if you want a fast bike the cheapest way is to just go out and buy one. There are plenty out there a lot faster than a Vmax1200. You could try a VMAX1700 for a start...
I stand to be corrected, but I don't recognise those mystery parts as being from a Vmax and I have done a nut and bolt restoration on mine. What makes you think that they are from a Vmax?
I am the same as you, I like everything to be to specification and by the book. Trouble is that 36 ftlbs for Vmax head bearings does not work in the real world - for me anyway. I found that the way to adjust the (new) head bearings on my totally rebuilt bike was to just carefully use a hammer...
I agree with Max Midnight. Many gen 1 bikes were sold over a 22 year model life and if the O ring was a problem we would know about it by now. I bought my gen 1 with about 35000 miles on it and completely stripped the engine to get all covers and cases powder coated for cosmetic reasons. O ring...
I have had the Black Widow system (front and rear headers and mufflers) on my gen 1 for the past 5 years on standard jets and other carburetor settings and engine runs perfectly. I really do mean perfectly. Quite a lot noisier than standard. Have not dynoed the bike with this system however and...
I had a similar issue on an XJ900S which has a bolt behind the cylinders with a copper washer. I could torque it up as much as I dared and it would still let through an oil mist. I solved it by simply using a thinner copper washer which could distort enough under pressure to make the seal.
The middle gearbox turns the drive 90 degrees. Without it your output shaft could only then be used with a chain drive, but that is probably what you want?
Sounds like a fuel problem to me. I had similar symptoms on my FJR1300 and turns out there was a filter inside the fuel tank that gets clogged up. Cleaned that and it has been fine ever since. So a new fuel pump may solve your problem, if not just look at every stage of the fuel system from the...
You definitely have to split the cases to remove the output shaft which is why there is no specific procedure, it's just part of the transmission overhaul after you split the cases. If your problem occurs at a higher speed it could be quite hazardous so best fix it good and proper.