Chappy,
Thanks so much for the props, but I'm just a pipefitter from flyover country who has never made a dime either building or selling replica speedsters and/or air-cooled engines. I'm a random internet personality, and you're dealing with professionals.
Please don't lose sight of that.
However, I think I can answer your questions, and maybe shed some light on my distaste for Kadrons, and why Greg/Pat are using them.
As someone that has a VMC 356 on order, with an AC Type 1 w the Solex/Kadrons, and who has very limited knowledge but just started reading John Muir’s “how to keep your…” Could you possibly explain Pat Down’s reasoning behind the current configuration they are going with in relation to the Kadrons/2332?
Sure.
Top start with, the engine configurations predate Pat building engines for Vintage. Greg was using similar or the same combos before he started having Pat build them. There is a solid reason "why".
What Kadrons provide is simplicity - they don't plug idle jets like Webers and Dellortos, and they are comparatively easy to set up and maintain. Frustration with the carbs is at least 90% of why people run screaming from the Type 1 platform, and the cars themselves. Owning one of these cars is really a lifestyle (you'll understand that better once you have the car), and I think the decision to supply cars with this configuration is based on a desire to provide the easiest on-ramp possible for the care and feeding of a Speedster/Spyder.
I get that and I respect it. If I were in the business of building cars for a huge variety of people with varying levels of mechanical aptitude, most of whom have never driven a car with any type of carburetor (and the rest who have not for 45 years), I'd K.I.S.S. too, and develop something like this that everybody can live with.
I bought my first Speedster in 2000. I have a deep background repairing mechanical equipment and a history with domestic V8s running back to the 70s and early 80s when I was a punk kid from a small town who loved fast cars and took a full load of shop classes in high-school. Even with that background, the dual 40 IDFs on my first car vexed me to the point of frustration. Nobody in my part of the world (at least nobody that I could find) knew anything about them, so I was 100% on my own with badly written books and the world-wide interweb. Mostly, I just flopped and twitched out in the garage until I was ready to just shoot the stupid thing. I very nearly quit, and I'm definitely not a quitter.
I cycled through ICTs and Kadrons on various engines, trying to find the happy spot between "easy to work on" and "EFI-like throttle response". It took a heart-to-heart with Art Thraen from Salt Lake City (Art is no longer in the hobby, much to everybody's detriment) to understand that I just needed to bite the bullet and learn my way around a set of independent throat carbs to get to where I wanted to be. It took 5+ years to get to that starting point. Once I really dove in, it was like a light-switch in my head flipped, and I was on my way.
Not too many people are going to have that level of persistence, or the hardheadedness to keep shoveling money into the boilers of progress along the way. It's far, far easier to park the car, then "reluctantly sell" it after 2 or 3 years of being a garage anchor.
That's a pity, and it's why Greg is doing what he's doing.
I'm planning (hopeful) that I’ll be doing the basic maintenance but will also take it in at the 3k intervals for professional look overs/dial ins etc. The shop I’ll be using is very familiar with them but, like myself were curious as to why they wouldn’t go with Webers/Dellortos instead. I’ve heard/know the Webers are a bit more fickle but is the juice worth the squeeze for a guy like myself to make the switch?
I'm of the opinion (probably mistaken) that the Kadrons are a good "introductory intake system", installed for the reasons I talked about above. If you have the kind of support network you seem to, you'd be an ideal candidate to just skip the training wheels and get straight into riding the bike.
In my opinion (and keeping in mind that my opinion and a dollar would buy a coffee at MdDonalds before the "recent troubles"), the Webers/Dellorto juice is absolutely worth the squeeze. I would strongly suspect that if you talked to Pat Downs about this, he'd agree 100%. If you asked for the 2332 with a set of 44 IDFs (not EMPI clones), I suspect he and Greg would happily supply them for the difference in cost.
Regardless, if you still own the car in a few years, you'll have them anyhow. They really are a much, much more sophisticated induction setup. They're not EFI. But if they're done right, and all of the planets are aligned - they're sublime.
To my knowledge, nobody has ever described Kadrons in those terms.