325i cylinder head on 320i block

[kombikat]

I have a 1990 320i and have been offered a 325i cylinder head which I am tempted to buy (as an insurance against mine becoming incontinent with old age) but can it be substituted even though it has larger valves?
Gordon

[m-dtech]

i know the 320i head fits the 2.7e m20 block but dnt know about std 2.0 block...

anything can fit if your prepaired to spend the money to make it fit

[Mops]

i dont think it's gonna work at all... after all you will be decerasing compression.....

besides i do not know whether it will actually physically fit (in terms of location of mounting studs/holes)

[Widge]

It's a total NO NO.
It would fit but would give silly compresssion and a less powerful and less economical engine, and as you are already driving a 320 I don't think you need either of those. Just build up a spare 2.5 engine!

[dazleeds]

how bout a 323i head on a 325?? whats that do????

[Emotechnik]

I have a 1990 320i and have been offered a 325i cylinder head which I am tempted to buy (as an insurance against mine becoming incontinent with old age) but can it be substituted even though it has larger valves?
Gordon

See link below

http://www.e30zone.co.uk/modules.php?na ... highlight=

[ouch]

how bout a 323i head on a 325?? whats that do????

now that can work

[Templ8e30]

how bout a 323i head on a 325?? whats that do????

Nope that won't work either, the 320i/323i heads have the same combustion chamber shapes. You'll end up clashing psitons into the head.

Cheers,

Iain T

[m-dtech]

why dont you just polish/port the existing head and fit larger valves ????