COOL Bob! The 650 was soooo under-rated for the street. I got a great Corvette/650 Holley story for another day.
Memory lane? Lets not forget the Cal Custom chrome velocity stack with the cheesey 1/8" reticulated foam filter and the bird screen. It was a good place to set your beer, cuz at least your beer actually helped block some of the dirt. giggle
Looking in the rearview mirror tunability was always the issue. The difference between WAAAAAAAAAA! and BUUUUUUUwaaaAAAAAA!
All that prehistoric "carbonater voodoo" is now pretty well lost to the ages. Back in the day you'd have to buy a whole new carb to just to change a quad's venturi size. Interchangeable venturi inserts didnt come until much later. I shudder to think of all the juicers that went to the scrap heap, because EVERYONE blames the carb first, instead of the maroon that sized it; let alone jetted or adjusted it after the fact. A brief moment of silence if you please, for all the wheezing setups that were black flagged through no fault of their own. The irony being that even back then, all the info of what worked best for an application was common knowledge.
I just put a quadrapuke into working order for my neighbor's boat. Beyond all usual fuzz and scuzz, the accelerator piston was seized. Fortunately his bother had a tote full of cores we could pick from.
I cut my teeth on eurotrash, so I still get a kick out of straightening out a rack of side or down drafters. Many of the Weber offerings were unique from the get go, using incrementally sized venturi inserts to adjust your CFM with in the working range of the throttle plates. Ya do have to take the tops off though. The nifty part ... ? The idle, main, and pre-atomizer jets (squirter) are all accessible from the outside, so changes can be made on the spot without dis-assembly.
I could go on for days on carb carnage, and still dabble a little; simply because it's gravy bench top work, and one of those mysterious lost arts. Unless the housing is "shafted", most can be saved.
Now a days the kiddees clean up their throttle bodies and airflow meters, then turn right around and oil up their custom K&N air filters that lay just upstream of the hot wire. Indicating that induction still remains misunderstood.
Hi jack over!
Bill