quick ?

[e30construction]

my friend just got a 90 325i but the guy he got it from said it had a recent engine replacement and he wants to know how to tell if its a i motor or an e motor and im not yet familiar enough with these motors to give him an anwser so i said id research and were better than here thanks in advance

[ELVA164]

Some quick things are the valve cover on an eta motor has a roundel while the i motor has "BMW" on it, the intake manifolds are different (see below), and the i motors will have a different plug for resetting service intervals.

eta


i


Notice the tiny plug next to the dipstick on the eta and the much larger plug next to the dipstick on the i motor. There are other ways if needed, but these are quick.

[ohthejosh]

As the pic I created below you can see the major differences. The i motor has a different valve cover, intake manifold and doesnt have the extra hoses and what not on the end of the intake manifold

[graveshaker]

^^^^^^Nice, saved images.

[JasonC]

"Port thing on intake" is the cold start injector on the ETA.

[ohthejosh]

"Port thing on intake" is the cold start injector on the ETA.

Thanks lol

[e30construction]

nice thanks alot guys

[MR 325]

If it's fast it's an i engine. If it's slow it's an e. ;)

[e30construction]

If it's fast it's an i engine. If it's slow it's an e. ;)

not exact words but thats what i told him when he first asked me lol cus i know the e doesnt rev as high