nope its not.....and the valve adj. thing, this is from Zook...25,000 km . Thats , lets see...15,000 miles.
Valve adj....lift the lid off and check all yer valves for clearance. These are , if I'm not mistaken underbucket shims. So each valves clearance gets measured , then the appropriate shim is installed .
Throttl sync.... put a guage on each hole and see what vacuum its pulling . Usually you set the carb or throttle body or injector at idle , then at about 3500 RPM , then a bit higher . You try and balance the three out, find the happy medium if you will .
yup....valve clearance . There has to be some clearance there , as metal heats , it expands , if there was no clearance , a warmed up engine would not allow the valves to close all the way . In a modern day hotrod such as the busa , this would be bad . Your motor would BURN valves . The ignition of the air/fuel mix in the cumbustion chamber would send burning fuel past the open valve . Bad for the valve,bad for the valve seat . Bad for performance .
If you are going to err , err on the side of thin. Not thick. In other words , you can live with a noisey valve train, your motor wont last long with thick shims and burning valves .
hav a good 1....RSD.