You should see the garret on my 2.5 Daytona it spools up just as fast as the mitsu on a 2.2. The mitsu on a 2.5 runs out of breath after 12psi.I still plan to get the 16v heads looked at, but due to a deficit of parts, the best chance to get two running Spirit's is an 8v setup in one and a 16v in the other. I need to get the block decked regardless, and I'm expecting the overall project to take a year. In the meantime, my goal is to have an 8v setup that exceeds the HP of a stock 16v with as much MOPAR parts as possible.
@unstable bob I've thought about it, but it comes down to what I want the final product to be. My first choice would be to stay as close to an original Lotus configuration as possible. Between these two cars, I believe I can make one very true Spirit R/T, and the other car is going to be my personal dream car...not necessarily original but very Shelby in "spirit". I'm very interested in the 2.4 configuration, but maybe not for these cars.
@arieskcar Maybe more than 3 bolts. ;-) But yeah, I've always shied away from macro moves, and I'm glad I finally did this. Also, I know there's a lot of hate for the Mitsubishi turbo here, but I really think Chrysler was right to choose it for the mid-power builds. I want over 200HP, but I don't want it to take so much work to build up boost. The LeBaron, for all of its faults, had practically no turbo lag! I threw a cheap G-valve on it, and I couldn't believe how fast it made power. The Spirit (and New Yorker) take work to spool up. I'm not driving any of these cars down the 1320. I'm taking off at a green light, merging onto I-81 or I-95, and just generally having a lot of fun. 15PSI seems to be a breeze for the Mitsu, and I imagine it would be reliable to 18 or so PSI. I know I have a completely different type of luck from the rest of the universe, but almost every single Garrett turbo I've had was bad, and only one Mitsubishi ever gave me trouble (and it still worked reliably). One thing I'm really curious about is to see if two stock IC's can be placed side by side next to a Honda Civic radiator. If so, I think 18PSI with a TE04H and 8v with a moderately opened exhaust could be a fun daily driver. Thanks to Cindy, the upgrade path is very simple. It's not the legendary Lotus head, but I'd be proud to drive it anyway.
The garret on a 2.2 is kinda laggy that's why I like 2.5's
My 2.2 mitsu pulls fast but I want more 2.5 garret setups. Way more power and quickspool.
Here is a 2.2 forged crank and a 2.5 crank I have by the door.
You can see the 2.5 rod journals are further than the mains so there is more leverage/stroke for a 2.5 to push exhaust out the port and spool the turbo faster.