Ahh. But what sort of engine? I'd toyed with a 911 engine, it sounded like it would be fun. But a lot of hassle, so ditched that. Even thought about electric - there's a lot going on in that scene at the moment and much as I love an IC engine, electric is the future. Trouble is, at the moment the range is likely 150-200 miles and I like to be able to get further than that if needed. Maybe I'll do a conversion in the future when drive-trains and batteries are in better shape. But for now? No.
Scooby? Sound great, put out loads of power, decent non-visible cooling systems out there. But chuffing expensive (like £12k+ expensive) and I really wanted an air-cooled.
So - VW it was. But then Type 1 or Type 4?
The Type 4 was a later evolution of the air-cooled engine and was originally designed to go in the type 4 launched in 1968.... (only lasted til 1974)
But the engine was used in the late-bay '72 - '79 and came in 1.7, 1.8 & 2.0L variants (an updated version also powered the Vanagon). It is of course also used in the 914 - so it had good heritage and would have made a good alternative power plant for my bus. And it started with bigger displacement, had better torque, cooling and longevity. Looked like a good option.
The Type 1 engine went in beetles & pre-72 buses (as everyone knows...) - some people call them a type 2 engine, but really it's the same as went in the beetle. So it's a type 1 in a type 2. And looks like this of course (although this is a baby 1200 - like the one in my beetle. Which had as much pulling power as me)
And this is where I made my first big decision. I wanted the engine-bay to look like it was original. And no matter how I looked at it, I couldn't see a type 4 in there. I wanted a Type 1. But one with lots of power. And reliability. And fuel economy (alright, had to ditch the last one...they're never going to get much past 25mpg....)
So looking around, I thought that a good compromise for the bus would be a 2110cc that was tuned for torque, not top-end, and specced to get around 150-160 HP. I did look at electronic injection, but that's really complex and I'm a simpleton, so it'll be on carbs. So over to James to come up with the plan....