I posted this in the v6 forum but figured i'd have better luck here since it seems like theres more activity here. I'm planning/designing/acquiring parts for a 3.0 turbo build. i found a good cheap 2.5. So my question is, can the 2.5's 85.5mm bore be machined out to the 3.0's 91mm specs? I've tried to search an look but i havent come up with anything. I know the 72 an 73 share the same crank, same stroke of 78mm, seems to be the only difference is the bore size. So wasnt sure if mitsu casted these two differently or used the same block with two different bore sizes. if they used the same block, i'll buy the 2.5 and bore it out.

2.8 i believe is all...could be wrong.

You can't just sleeve a block.

I don't know of any 2.8 forged pistons.

Stock rods are good to more than enough for you.

Aluminum radiators...get on ASEC and sign up for the group buy.

No way for an electic waterpump.

We sell head studs, head gaskets, all the gaskets you would need.

injector size all depends on what you use for tuning...but those are gonna be to small.

I am planing with tuning options now...no word on whats the best yet.

You will also need a high flow fuel pump, which we also sell.

So mitsu casted a whole different block just for the 3.0? damn. I guess if it was that easy to get a 3.0 everyone would have one.

True. but opportunity is knockin with this motor. maybe i can atleast find a 3.0 block and transfer the good parts from this other motor over.

The cheapest that i could find so far is $800. my options are still open, but i'm gonna sieze every opportunity i can get to acquire parts

Thats where i found the $800 motor, and no blocks what so ever, but its been awhile since i looked on there and i dont know how often their inventory changes. When i get home i'm gonna start callin up a few junkyards and see if they might have anything. Also thought about tryin to find a good eclipse forum and see if anyone on their has somethin layin around. If anyone has any leads let me know please. Doesnt really matter what condition its in as long as the block is good, i'm building a motor from the ground up whether its the 2.5 or the 3.0, but preferably the 3.0.

Yeah i was just gettin ready to say that i just went back an searched, and for some reason i never saw the additional pages, and the cheapest i found close (40 mi) from me was $300. But there wasnt any information given, so i went to the next cheapest, safest engine and that was $450.  $200 is more of my price range but the good old saying of you get what you pay for can especially be true in this situation. I'm just gonna sit tight, keep reading and searching and wait till i sell my GTO before i start dropping money for parts.

The part of the build that really scares me is the tuning section. I can build the motor and fab what i need no prob. But when it comes to the electrical part of these cars, i dont know much about them and cant really find out much information about em. I've been thinkin about buyin a shop manual and seein what i can learn from that. I know i can add a fuel controller, but will that be able to control ignition or just fuel? Do our computers sense knock? theres just too much electrical information that i dont know that makes me uncomfortable, and untill i am comfortable i'm not puttin anything in my car or cuttin a single wire. Is there anyway i can get the fuel/ignition maps? along with the ve map? or is there anything out there that will install in my laptop, and plug into my car, so i can datalog? I know i'm starting too ask too many questions so i'll just hold off on the other ones. I'd just like to be figuring everything out while i'm not doing anything, that way i know what parts to look for and how much to save.