"I" cam, valve springs, intake and injectors on eta. Would it work

[Jimmyac28]

Hello, I have an 84 325e that I will be removing the head to replace the head gasket and came across an 885 head with some bent valves and broken rockers. The head has intake manifold with throttle body, injectors, fuel rail, fuel pressure regulator. Not sure what it will cost to rebuilt the eta head but I dont want to do the eta head swap at the moment because I dont want to mess with the wiring since the future plans are to do a 24v engine swap and also I dont have the rest of the parts to complete it
Can I use the intake manifold, throttle body, injectors, cam and valve springs on my eta head just to get some extra horsepower?

[Jimmyac28]

Anyone?

[jeffnhiscars]

the injectors won't work without a motronic upgrade, absent which your redline will be stock ETA so you don't really need the dual valve springs (ETA and 2.5 outers are the same anyway).

Cam journals lubrication is different as well so caution there

[AndrewBird]

Intake manifold and throttle body will add a bit of power, but I'd make sure to port match it to the head. Use an i intake manifold gasket to mark the head, then start grinding.

For the cam, the head needs oil journals drilled if I remember correctly. ETAs have two less mains on the cam, so no oil ports for the i camshaft.

[Jimmyac28]

What about using the i head intake manifold and throttle body but keep the eta electronics. I have an chipped eta ecu that raises the rev limit

[Coyote_ar]

injectors on the ETA are low impedance, the rest of the e30s have high impedance. so swapping injectors fron another e30 is not an option if you keep the original ECU. maybe you can look for other donor car with a low impedance injector of the flow rate you need.

for the i cam, you will need to either drill the 3 holes on the head to have proper lubrication on the bearings between cyl 1-2 3-4 and 5-6.

or just get an i head with 34cc chamber volume (this usually not that easy in USA since you guys didnt get that many 200 series I heads and 731 heads).
you could go with a 885 head which cas 43cc chamber volume... but that would lower your CR quite a bit.

also keep in mind that the 200 series head, even in I form, its still not that good for high flow. if you can afford a set of super eta pistons, you could use the 885 head, which is the one that flows the best, and still keep your CR high enough.

[digger]

button the head back up stock with a chip and just wait and do a 24V swap later

[Jimmyac28]

button the head back up stock with a chip and just wait and do a 24V swap later

I already have the I head getting rebuilt and I would like to use it