E30 Zone

would a 320 6 branch exhaust manifold fit a 325

yup.

'Log' manifolds for both engines are the same, so it follows that after-market 6 branches would be as well.
... Erm, don't think a dedicated 6 branch is made for the B20, but those for the B25 work on the B20.

I've heard that the 320i and 325i manifolds are different, but completely interchangable. From what I heard the 325i has a slightly better one, so maybe you'd be better off using one anyway...

Short answer = yes.

if there both the log type then yes mate as theres no difference between them

Nay wrote:I've heard that the 320i and 325i manifolds are different, but completely interchangable.

My understanding was they were the same ... but then my understanding depends upon how fast I 'scan', which means I might miss some intrinsically important detail from time to time.

from what ive heard, the 320 has smaller air flow holes than the 325 one, so i would go with the 325 one...

SHAKEELE30 wrote:from what ive heard, the 320 has smaller air flow holes than the 325 one, so i would go with the 325 one...

Think you are getting your manifolds mixed up.
The inlet manifold on a 320, the one with the throttle body on it
has smaller port holes, the exhaust side manifold is the same
as the 325i.

Naa i think its the same with the exahust manifold...

320,323 and 325 are all the same

Part 11621716443 (Exhaust manifold) was found on the following vehicles:

E30: Details on E30
E30 320i Touring, Europe
E30 325i Touring, Europe
E30 320i 2 doors, Europe
E30 320i 4 doors, Europe
E30 320i Convertible, Europe
E30 325i Convertible, Europe
E30 325i 2 doors, Europe
E30 325i 4 doors, Europe


From Realoem.

The manifolds on my 320 and 325 (both Pre-facelift) were different, the 320 had 3 bolts at the exhaust connection and the 325 had 4. I don't know if this is the same for facelifts though. Here are the exhausts:

clarko74 wrote:The manifolds on my 320 and 325 (both Pre-facelift) were different, the 320 had 3 bolts at the exhaust connection and the 325 had 4. I don't know if this is the same for facelifts though. Here are the exhausts:

Pretty sure it,s a pre facelift thing Clarko, the info i posted
is for post facelift. Iirc, some pre facelift manifolds also came
in two parts.