anyone know what the strength of all parts are in the different Impreza motors, 2.5i, WRX, and STi ? Interested in the crankshaft, rods, and pistons, whether forged, cast, and the like. Trying to decide which model is the best for me today and possibly in the future, if I decided to modify them? The Turbo's should have stronger parts, but not sure if the WRX is equal to the STi, and I read somewhwere that the 2.5L has a really strong crank, but compared to what or which other Impreza motor? I have also read that between the
5speeds, the one in the base model is prefered, because it is as strong as the WRX, but has better gear ratioes.I want the wagon so am limited to teh 2.5i or WRX, and had an injury that damaged my muscles, and all other systems, and don't drive as fast as I used to or may want to, because strength and reaction times are slower, and my vision isn't what it used to be. I have improved a lot, but it isn't who I would hope to be, though I have periods where everything works a lot better, and I drive accordingly.
My thing is, I have always wanted to build and modify cars, and used to be able to order a lot of Police Options back in the old days, to have the most car the co made, on any model.
I have been trying to find out what the crank, rods, and pistons are made out of in the WRX, and If they would have to be changed to go much higher in power, It might not be worth the extra cost at this time, at least, and I can't find what I consider things that should be easy to find.
Right now I think I prefer the base model for ride comfort, and the power is probably adiquite unless I improve. Price and insurance on the WRX, and more chance of being stolen wouldn't make me happy if it wasn't the right choice I don't want to buy one model, and wish I bought the other, no matter which way.
Vince F