Results

Set points (dwell @37 degrees), set timing (@5 degrees BTC), final-adjustment and balance of carbs, set low idle, set fast balance at 3000 rpm, installed a stock air box & filter, repaired vacuum leak on the balance tube and put all vacuum hoses back to correct position on air box. The flow-guide valve vacuum hose was missing as was the breather hose. Fuel filter was replaced. The engine tune-up is complete.

Engine runs perfectly throughout entire rpm range. Drives well. When the harmonic balancer is off for front oil seal replacement, I will paint the timing marks to make future ignition timing easier.

I removed the spare tire to clean the spare tire well. Upon inspection I discovered that the spare tire is an unused original Bridgestone RD-150. A collectors wet dream.