WRX FA20 Swap?

[cdrazic93]

Originally Posted by kiichiro

How do we know this?

People have tried, im sure theres threads on it but im too lazy to search. Oh the starter is on the wrong side, and the bellhousing is different.

[kiichiro]

Originally Posted by cdrazic93

People have tried, im sure theres threads on it but im too lazy to search. Oh the starter is on the wrong side, and the bellhousing is different.

fair enuf!

[cdrazic93]

Originally Posted by s2d4

This reads more as adding PI to a much larger DI system than FA20 to begin with. It may end up being a better system than the fa20 because of this.

I definitely would have much preferred a much bigger DI system, especially when E85 is much better with DI. The majority of 86 owners wants less than 400, this would've been perfect as no need for fuel pump+ bigger PI injectors for just about everyone but the "big" turbo straight line guys.

Would it be worth the effort to attempt it?

[s2d4]

Originally Posted by cdrazic93

Would it be worth the effort to attempt it?

Honestly wouldn't know until someone with the resources to looking deeper into it and/or actually try to do it.

[cdrazic93]

Originally Posted by s2d4

Honestly wouldn't know until someone with the resources to looking deeper into it and/or actually try to do it.

For shits n gigs i spent 5 minutes looking for some DI injectors, and 99% of what i found were for diesels, so someone might need to manufacture them.

[s2d4]

Originally Posted by cdrazic93

For shits n gigs i spent 5 minutes looking for some DI injectors, and 99% of what i found were for diesels, so someone might need to manufacture them.

Swap over from the DIT "may" be easier and cheaper.

[cdrazic93]

Originally Posted by s2d4

Swap over from the DIT "may" be easier and cheaper.

I hope it will be that easy. Although it sounds kind of a hastle. Would they fit?

[Fizz]

Out of curiosity, are the pistons (for lower compression) the only difference internally between the two engines? Do they share the same crank and rods everything else in the short block? Same heads as well?

[s2d4]

Originally Posted by cdrazic93

I hope it will be that easy. Although it sounds kind of a hastle. Would they fit?

People with experience on them like FBM would likely know more than us on this subject.
At this stage I don't think it is worth it, I was referring to it being better for most of FT86 guys to have the DIT DI system from the factory.

[s2d4]

Originally Posted by Fizz

Out of curiosity, are the pistons (for lower compression) the only difference internally between the two engines? Do they share the same crank and rods everything else in the short block? Same heads as well?

No, tomei weighed them and the DIT items were quite a bit heavier.

[Fizz]

Originally Posted by s2d4

No, tomei weighed them and the DIT items were quite a bit heavier.

Do you think then that swapping the pistons and rods (and maybe the crank) from the DIT would be a poor man's option to lower compression on the FA20?

I've no idea how much they'd cost new, but it would have to be half the price of brand name aftermarket stuff to be worthwhile....unless you got hold of used ones.

[Dipstik-sportech]

Originally Posted by Fizz

Do you think then that swapping the pistons and rods (and maybe the crank) from the DIT would be a poor man's option to lower compression on the FA20?

I've no idea how much they'd cost new, but it would have to be half the price of brand name aftermarket stuff to be worthwhile....unless you got hold of used ones.

I'm willing to bet that the factory stuff is more expensive than you think, especially considering it just came out. I'd be more interested in a complete short block and if out heads and injection system would work with the turbo pistions.

[Fizz]

Originally Posted by Dipstik-sportech

I'm willing to bet that the factory stuff is more expensive than you think, especially considering it just came out. I'd be more interested in a complete short block and if out heads and injection system would work with the turbo pistions.

Yea I think complete DIT short block will be best IF like you said the heads and everything else works with the FA20. Should have more at wrecking yards in a few years time.

[Speedhead]

Theres quite a lot of incorrect information here, because of guesses and rumors.

Wait a little bit more and many questions will be answered soon with my car/build.

Stohl Racing is one of few official STI motorsport base teams worldwide (such as prodrive was back in the days) so there is a very close relation to the factory.

Just wait a while and see.