I post this in the Pantah Hot Rod section, since I have a -87 F1B fitted with an SL500/600 engine. (engine # is SL500xxxxx, but it figures as a 600 in the registration papers)
I am in the middle of a small job to make in ready for the coming season. Have only ridden it a short trip a couple of years ago before it was put aside. In Norway we have a 30-year rule where I now can registrer it as a veteran bike with very low tax and insurance. So its time to dust of and ride...
It was running OK the last time. Not great, but OK...
The plan is to fit new belts etc. So I took of the valve covers and did a check on the valve clearance.
Measured at the opener:
Rear/vertical cylinder
Int. 0,05mm
Ex. 0,15mm
Front/Horizontal cylinder
Int. 0,10mm
Ex. 0,10mm
If i'm lucky maybe I can switch the shims on the rear cylinder to get 0,10 on both valves?
The "problem" is the closer and valve collet. I can't measure any gap here, and are not able to turn the collet unless I twist really hard (with my fingers, no tools)
Not able to push the closer down, its 0,00 tolerance.
Shouldn't there be some free movement here?
The SL dont't have the clip on the opener axel, so I guess I have to take out the opener axel and remove the opener to get access to the collar.
How easy should it be to twist the camshaft with the valve system intact. I have a "feeling" that maybe its is binding in some spots, but don't now if this is correct or not.
My first attempt at checking and adjusting desmo valves, so I appreciate any tips and trix