325i piston compression?

[urfy]

Can anyone tell me what the factory piston compression be for a 325i?
Also what should I expect from a rebuilt engine (new rings, bearings)?

[maggspower]

Depends what engine it is:

25 6 E1 is 9.7:1
25 6 E2 is 9.4:1
25 6 K1 is 8.8:1

The number will be on a machined flat near the bottom of the dipstick tube.

[urfy]

Depends what engine it is:

25 6 E1 is 9.7:1
25 6 E2 is 9.4:1
25 6 K1 is 8.8:1

The number will be on a machined flat near the bottom of the dipstick tube.

25 6 k1

[Speedtouch]

Standard factory power output figure was 171bhp, though some early high compression ones were more like 180bhp, while some later low compression ones struggled to achieve 160bhp.

A chip can improve things somewhat.

[urfy]

Standard factory power output figure was 171bhp, though some early high compression ones were more like 180bhp, while some later low compression ones struggled to achieve 160bhp.

A chip can improve things somewhat.

Sorry if I wasnt clear but I was talking about the figures for compression for each cylinder (as if your doing a compression test)

[Speedtouch]

They are usually around the 150-160psi (10-11 bar) mark.

[urfy]

They are usually around the 150-160psi (10-11 bar) mark.

oh I was expecting to be 180+ psi

[Speedtouch]

Some are indeed that high.