325E v 325i ?

[blown97461]

For a 1986 model is there a way to tell which engine you have from visual inspection alone?

I realize if you drive the vehicle it would be apparent due to low revving of the eta engine.

[323i E30]

This thread has clear pics: https://www.bimmerforums.com/forum/s...0B25-vs-M20B27

M20B25 = 325i
M20B27 = 325e

[bluptgm3]

I did not read the linked thread, however there was a higher compression “I” head/intake system ‘era’ engine in 1988 called the ‘Super eta”, featuring a higher RPM limit.
The pre-1988 ‘eta’ engines topped out at ~ 4500 RPM.

In 1986, the ‘eta’ engine tachometer indicates the low redline for the ‘eta’ engine line.


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