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Originally Posted by volkdent
Get an STI motor then tweak it. Manufacturers have to have reliability built into their products, aftermarkets don't, so start with the most power you can find STOCK then start getting bigger.
Jason
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That's exactly my plan! I'll use the EJ20 long block until it blows up then take a STI block, close the deck, add T sleeves, Forged pistons and rods, use my heads, port and polish, 5 angle valve job, titanium retainers, dual valve springs, titanium valves, GT35 ball bearing turbo, 255 ltr fuel pump, 960 cc injectors, turbo-smart 38mm waste gate, and other fun goodies to get 500+ hp.
The only weak link to the STI short block are the pistons and rods. They can handle 500 hp, but not reliably. And especially trying to get those figures on pump gas 91 will be close to impossible. My cell phone bill is rediculous this month just because I speak to so many subaru tuner shops and ask advice. The majority of the shops will tell you to start out with an EJ20TT (because of the better heads compared to the EJ20T) or STI motor then when either of them blow, close the deck, put rods and pistons in and add on to the heads over time.
The reason why I went with the EJ20TT over the STI engine is because comparing the prices; 950+shipping to the STI's 4800+shipping, and the 24 extra horse power wasn't worth the extra $3850. Also, a complete replacement motor through nippon motors is only $650, so i'll throw as much boost as I feel like without worrying about destroying difficult (read expensive) machine work, internals, block, ect. like it would be like if I was building up a T1 or T4. It seemed like the logical choice to get things on the car sorted out through time then add to it. It didn't make sense to me to put the star destroyer motor out back before i had the suspension dialed in and every thing totally tight and true (HA, like 350 isn't enough in a bug).
Ok heres the bill as I see it:
EJ20TT-875 shipped (amazing deal)
Single turbo conversion:
Header from Outback-400
Wastegate-250
T3/T4 turbo-400
Fuel rails with 50 lbs injectors-400
Fuel pump-150
Haltech EMS-1150 with sensors
Haltech coil packs and ignitors-200
Plumbing-200
$4025= 400 hp $10.06 per horsey
I could skip the single turbo conversion and stay with the twins and get 320 no problem, which i'll probably end up doing then do the swap, then blow the motor, then get the STI shortblock.
Oh well, I hope everything goes smoothly.
Next step...multi-link rear suspension from a 993.