Yea the blocka cranks & connecting rods are the same from the f2 to the f2t but i think the f2 has a compression ratio of 8.5 and the f2t's compression ratio is 7.5, i have seen dyno pulls and charts of stock internal f2t's putting down 350hp... Thats with alot of boost and u can do that b/c the compression ratio is so low..
That is a lot of hp from a 2200 block and internals.I would hate to see the results if it did grenade,especially spraying it that much.Holy Metal Parts ,Batman.Lol.BJ
a better word would be guestimate lol, with the 8v engine in the trucks, getting much more than 180-200 hp with out boost isn't gonna happen, you might push the envelope with a small shot of nos & running an fuel injection setup with standalone and be able to reach the 225 mark. even with boost on the 8v, you can only put 5lbs of chit in a 5lb bag if ya know what I mean, so with a high amount of boost, I'd say that you'd top out at 275 max which is more than likely improbable, and that is dumping serious $$ in to the engine & taking a chance at grenading it on the first dyno pull.
there are some guys that have boosted the 12v f series engines up in the neighborhood of 350+ horsepower like bagged said.... be it in the probe, 626 or mx6 12v trim, but to get this, the boost is way up there, so serious engine & boost mtgment would need to be used, along with balanced internals, and w/e other nice little speed shop tricks they could pull out of the bag!
Now for the kicker, I'd say by cryo treating a 16v engine, and the use
of all the go fast goodies & knowledge you could source, this engine
could hold together for up to 400-425 hp.
do keep in mind that when you "tinker" with one toget the max out of it, the trade off is usually that it isn't gonna hold up for a long period of time....
here is a little fyi stuff for ya.
there supposedly are no known mazda f series engines with forged internals
but there was a b family engine (bpt) that in limited production trim came with forged internals & put out @200 ponies from the factory.
What I have done to strengthen my internals is to have the whole engine (block, bearings, crank, rods, pistons, cam, valves, v-springs, & fasteners) all cryo treated, see this site for more info it cost me with shipping @ $700 to do this, and the reason I did this is
one: cryotreating will make non-forged parts like forged ones, if not stronger & less likely to deform or break or wear out.
two: you can't get a forged crank unless you know a crank mfg, and have enough $$ for them to tool up & make one
three: you can get forged rods & pistons. I only opted for the pistons since I am raising the comp ratio and needed a custom set to accomplish this and to lighten the rotating mass, with the cryo treatment, the stock rods (which are or will be shot peened & balanced) should hold up as good if not better than a forged set, and for the price of a forged set of rods @ $700, I got the whole engine treated which as explained before will benefit the whole engine, not just getting rods. now if i were building a 16v max effort engine, yeah, i'd spend the extra $$ on the forged rods just so i'd have that extra little comfort that at high rpm & boost, i wouldn't sling one out of the side of the block.
four: I'm gonna run a girdle, and am using main studs & head studs instead of bolts, also the use of a copper head gasket & o-ringing the decks should keep everything working in harmony. also lightening & balancing all of the rotational mass will cause less stress on the internals & engine as a whole, while increasing the horsepower, but be careful as too much lightening & the engines longevity will suffer.
Since the page is like a mile long, i'll quit typing now....
at the point of deciding to engine swap rather than engine build,u have decided to go with raw hp over the -dare I say it- elegance of getting all there is to be got out of a smallish 4 cylinder.And that my friend is why we have choices.Luck any way u go and we will be here to assist.My engine swapping history goes back to flat head Fords and McGurk equipped 6 cylinder Chevys so lots of us here have seen and done it all.BJ