Originally Posted by Kai
Because it is way too small in displacement, with too narrow a bore and has bad valve geometry amoung other things.
My problems with the d15 would be more along the lines of build-up, and availability of certain parts (cam, rods/pistons, etc). Of course, there's ways around this. I'm reminded of the first gen supra pistons, and that they fit the d16 head like a glove. You just need to find the correct size, and then get a nice rod (the supra pistons fit the b16 rod, and with some head notching for rod clearence, you can hold quite a substantial amount of boost).
The problem with these experimental setups is not enough people have done them for things to be tried and true. I feel thats why most people go way of the b-series boost setups. They know what they're in for.....
Originally Posted by Kai
How would you feel when you spend a couple good years and thousands of dollars to build the dinky little D, and still get walked on by bolt-on turbo B's?
eh, speed is all relative, anyways.
How would you feel to drop $7000 into engine work on a $6000 car, just to run the same speed as a mustang that definatly costs less than $13,000? Granted, its not a great analogy to d/b series boost setups, but it's close enough....
I'm just speaking for myself.... I wouldn't mind more power, but I wouldn't rate it by another cars power. Speed is just one aspect of a multisided hobbie..... thats why I love cars, you can do so damn much to them.