just bought a nice '87 525e, but needs head gasket.
can i use a 320i head with the 525e inlet manifold etc..
only asking incase the heads cracked andi know the 320 heads are pretty easy to get hold of
525e wth 320i head?
Moderator: martauto
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gromgsxr
- E30 Zone Regular
- Posts: 451
- Joined: Tue Dec 06, 2011 11:00 pm
from the wiki
To build a 2.7 you have three options:
Retain the standard Eta bottom end untouched and fit a head from an E30 320i or 323i. This is the 731 head which has much bigger inlet ports than the 200/Eta. It has the same sized valves as the Eta which are 40mm inlet and 34mm exhaust. The combustion chambers are identical the Eta 200 head so by fitting a 731 head, you will retain the Eta compression ratio.
To build a 2.7 you have three options:
Retain the standard Eta bottom end untouched and fit a head from an E30 320i or 323i. This is the 731 head which has much bigger inlet ports than the 200/Eta. It has the same sized valves as the Eta which are 40mm inlet and 34mm exhaust. The combustion chambers are identical the Eta 200 head so by fitting a 731 head, you will retain the Eta compression ratio.
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shanehaward
- E30 Zone Regular
- Posts: 532
- Joined: Fri Mar 13, 2009 11:00 pm
- Location: medway kent
i know it will fit but will it run ok with the original manifold etc?
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shanehaward
- E30 Zone Regular
- Posts: 532
- Joined: Fri Mar 13, 2009 11:00 pm
- Location: medway kent
sorry posted this in wrong section 