bill67 wrote on 03/26/10 at 06:01:58: You better use some high performance Klotz racing oil in it if you want it to hold together.
I will be using Valvoline Racing oil in it. My favorite had been Amsoil syn for a long time but in discussions with Webcam folks I decided to go with the Valvoline. They said that it "stuck" to the cam lobes better than the syn's did. I do not know what it is but apparently there is something in it that helps it do that.
Back when I had my '56 Goldstar, Valvoline Racing oil was all that was ever used in it. I bought it from a professional flatrack racer who was builder/mech/rider ... a privateer of which there were many back in the 50's and early 60's. He was a mechanical engineer by training and was a very good bike builder. The Goldstar was a freaking animal. It came right off the track and I put it on the streeet. No lights, no horm, no battery..... just a magneto, wire & plug.... that's it. The comnression was about 11:1 I think, it was kick start only of course and no compression release ...better get it right or it would throw you. The cam was the #1 of 5 choices for racing and the exhaust was a 1 3/4 pipe with open reverse cone megaphone. The carb was the best available at the time, a 1 1/2" Amal Grand Prix Racing carb with seperate float bowl. It would flow a tremendous amount of fuel and the engine needed it. You could hear it for miles.
Riding the Goldstar on the street was a real trick. With that race carb the engine would not idle so constant throttle attention was needed. Since it was built for flattrack racing the thing was tuned for wide open throttle running . When you turned the throttle on that animal it would howl and you had better have a
death grip and the bars or you would not stay on.
That was the scariest bike I have ever ridden. Some were faster on top end but from 0-110 nothing could touch it. The torque was enormous and it literally would stretch your arms out when you launched it on pavement. Keeping the front wheel down was downright hard.
Anyway, the point to the whole thing was that the Valvoline Racing oil did the job on the track in a very harsh invironment so I expect that it will take care of REX nicely. REX is not a Goldstar, but he has moved in that direction a bit.