Back to the project.......

     I'm back to thinking about turbo-ing the 2.5. I started redoing/ rechecking my previous research, found out that the 6.25 length con rods i wanted are no longer made, but on the bright side the 6.125 rods will work and are available in singles, so i don't need to buy 8 to get 4. I'm exploring the possibility of aluminum rods, some do come in 6.2 length, but pistons are harder to match to that length.
     Big news though Megasquirt has released the MS3pro

     Looks like and features resemble the sequencer they had promised a while back. Actually it's probably more powerful and feature packed than I need, but if I later change to a V-6 or V-8 I won't need to buy another ECM. Unfortunately it costs $1199 from Diyautotune.com. Ouch. But it's preassembled and already loaded with software. 

     A cheaper alternative is the Megasquirt 3 with ms3x expansion for only $645 plus cables (another $85 or so). And it could still run a V-6 or V-8 with the LSx series coils I want to use. They have even cheaper models, but they won't run the coils I want.

     I'm still researching the connecting rods, ICON 735 pistons should work with the 6.125 rods to give me a compression ratio around 8.18:1. I've found others but this combo is available so this might be the way I go.

     Garrett's website says that a GT2252 turbo will be perfect for my setup. Garret says it's good for 150 - 260hp on a 1.7 to 2.5l engine. I'm not going to go crazy with boost, around 7psi tops, if that only gives me 175, then I'll be sastisfied. I'd like to hit 200hp. Base hp for the Fiero is around 90hp so a good cam and a turbo could get me to 180. If I can find studs and a MLS head gasket I might go higher with boost, maybe 12psi max. I know this engine isn't a Honda H22, so I don't want to blow it up. Since I haven't had any luck with the head studs yet (ARP makes 1/2" studs but my engine is metric) I'm not going to pursue the high boost.

     I am planning on using an intercooler, probably a small one under the driver's side vent panel, and fiberglass snorkel over the roof. i looked into a water to air intercooler and the second radiator & water pump would take up too much space. I want to find or make scoops like theses.

Unfortunately this is the best picture I can find right now.

 I also want to get side scoops to let more air in. 

And a deck lid scoop to let the hot air out.

Although not that gawdy.