323i cylinder head??

[Super Eta]

I would like to know what the difference between a 323i and 325e head is?

Would it be a good modification to put on a 325e block?

Would there have to be any modifications done to get it properly fit?

How much hp gain would i get if i put a 323i head on a 325e block?

What would i have to do to get full potential out of a 323i head on a 325e block?

Just a few questions i had about the swap. ;)

If i do go through with it i will mate a 325i manifold, 325i throttle body and 325i exhaust up to it.

Any information you have will be of great help.

Thanks 8)

[user_punk]

323i head

Well, for starters:

http://www.e21bmw.net/graymarket/library/327i.php

Check that site out, they have the most info I've seen about it so far. You could also check www.e30.de . The only problem there is requiring you to read German. Now for the conjecture, the 325e and the 323i have the same combustion chamber so they SHOULD mate up with little to no problems. Although, the newest eta engine is ~16 years old so expect to do some extra work. To quote from e21bmw.net:

""The eta short block bolts right up to your 323i transmission, motor mounts, oil pan, and cylinder head. Use the 323i's K-Jetronic fuel injection system (drill and tap two holes in the 2.7 block to mount the warm-up regulator in the same place as on the 2.3 block), the 323i's distributor (remove the plug in the 2.7 block where it mounts), and the 323i's front engine covers and flywheel.

If you want to use the eta motor's head, that's okay (the early eta head casting and valves are identical to the 323i's). But you definitely want to use the 323i camshaft and valve springs or performance will suffer greatly. To do this, you must drill oil passages in the three undrilled eta head's cam journals so that you now have a total of seven useable cam bearings as in the 323i head. Don't forget to use the 323i valve springs as well. Also use the 323i intake and exhaust manifolds for better performance.""

Oh BTW- didn't you start this thread once already less than a month ago???

[cheades]

We can talk more this Saturday about the specifics of the swap during the dyno day, but I did one on my 325e a few years ago and it made a big difference.

[Super Eta]

That would be awsome.

[rs4pro3]

Remeber there are also two different 323i heads one with 325e size ports and one with port sizes inbetween the E and I. Email me and I'll send you an article about the differnent small six bmw heads.

[BavarianBimmer]

What about the 2 types 323i engines ??
139hp and a 150 hp version, i think there is more difference between an K or L jetronic fuel-injection, :roll:

[Bimmerfanatik]

What about the 2 types 323i engines ??
139hp and a 150 hp version, i think there is more difference between an K or L jetronic fuel-injection, :roll:

Did you get your 323i 2.7 together?

My track car is my newest e - and it's too nice an e engine to toss or swap for an i. So I'm looking to maximize power, and once I get some seat time, then maybe swap to something else. Eventually planning on running DSP class (right Alex? :)) so I can't go M50 on this car as I understand.

So for this year, I'd like to get a 323i head and perform the necessary mods to make it erally liven up my engine.

One thing I can't seem to understand is if I need to run the L-jet on it. This was the first I heard of it, but I want to make optimal gains, so if anyone can confirm, let me know.