"e to i

[THATDONFC]

I recently found an old head from a 325i in the shop. pn on the casting is 1705885. Would this benefit me at all? What would I need to add to this to make some decent power out of my e? Im not looking to do the whole motor swap because i heard its a PITA.

Thanks for the help

-chris

[SpecM]

it's not a PITA at all

and slapping an 885 head on your eta will not increase power that much

[THATDONFC]

Really? Well what would I need to make a significant difference with the i head.

The motor swap would include rewiring and all that fun stuff right? PITA

[SpecM]

Really? Well what would I need to make a significant difference with the i head.

The motor swap would include rewiring and all that fun stuff right? PITA

not too much to rewire really...

[THATDONFC]

well the wiring for the eta and the i is different, correct? I would need wiring schematics, which I don't have. And knowledge of how to read those pages. The motor is a direct fit? No modifications are needed? I would also need an ecu, correct? How long do you think it would take to swap an i motor into an eta?

[h82crash]

Well......the how long question is premature if you're still asking how. Swapping motors is a little drastic for a little more power. If you really want to do a swap I would find a donor i motor with harness still attached. Then all you would have to do is make the one main connection by the fusebox. You need the ecu too. If your car is a manual tranny then you will want the whole flywheel and clutch assy for the i. Do a search for the swap and a good site is http://www.strictlyeta.net/ There is a write up. BTW, an experienced mechanic could probably do the swap in about 4 hours.

Is your car bent?

[THATDONFC]

Thanks. If I do the swap i will have a 25+ year BMW mechanic overlooking the process. What is the difference between a harness that is not attached or attached?

Bent?

[E30_fiend]

AFM, intake manifold, ECU, head, and a few other little odds and ends from the i motor and thata all you would need for the swap.







Taylor

[THATDONFC]

So if I take the i Head and put the i Manifold with a MAF conversion and an ecu from an i, I should make considerably more power? or how much more?

[Danny]

Search.

No joke, this has been covered so many times before.

[THATDONFC]

I have searched multiple times today.

[SpecM]

I have searched multiple times today.

search more

you wouldn't make that much more power with your stock block, the CR will be too low.

So you want to wire up a MAF convertion, but can't find or read a wiring diagram? c'mon...

[h82crash]

The reason YOU want the harness all attached is that you won't have to find all of the sensors, injectors, afm, tps, etc to connect to. Just dropping an i engine in would give you about the same power as swapping the head, manifold, afm, harness, ecu, which is everything but the block from an i.

The link I gave you should have answered all your questions. Go to the technical menu and look for the e to i and the M20 2.8 conversion write-ups.

You really need to practice your search skills. This stuff is all over the forum. Hint: search for 2.7 stroker.

Oh yeah, bent, the body line from your rear door to the rear fender aint straight. Looks like your car got ass-packed during its lifetime.

[mikegar]

you could take the dual valve springs and cam from the i head and have it put in to the e head along with 3 oil journals drilled. and then chip it