|Quote, originally posted by jeremy80l »|
|Something that will be much more reliable (non carbed would be amazing), same decent gas mileage (over 25), and a lot more power.|
If you want reliability, the carbs are definitely the king. Lots of VW folks are making BIG power with carb'd cars!
If you want to do a swap though, you have a LOT of options- especially if you aren't opposed to hacking up the body. (which I gather is A-OK by you). The Mazda rotary engine puts out a tremendous amount of power for it's size, the only downfall is that it makes a lot of heat and needs a decent size radiator. To give you an idea of its size, it will fit in an early 60's engine bay with no cutting and the decklid on, with room to spare.
Your Corvair engine would be a good choice, but it will stick out the back quite a bit. They were popular with the Baja guys, but not with the street crowd for that very reason.
What's the displacement of your Porsche? 1.7L? 1.8L? 2.0L? That could be a good engine, but you would need to convert the cooling system to an upright style. There are several different kits out there to do that. Some are absolute crap, and some are very nice, so do your homework.
As mentioned earlier, the old Subaru flat-4 is a very popular swap, especially with the Bus crowd. They've proven themselves to be VERY reliable, make more power stock, and can be turbocharged with good success. They're a bit more modern than the VW engine, but not quite new enough to have all the complications of the newer engines.
The last "big" swap is the 4-cyl Ford Pinto engine.. I believe it was a 2.3L... Several companies make adapters for these, and back in the day there were even companies that sold this adapter exclusively! There's a HUGE aftermarket for these engines, and they too have a proven track record.
Good luck, and don't forget that the brakes and transmission will need some attention if you upgrade the engine.