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erikjohnnelson
Joined: 03 Feb 2007
Posts: 6
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 Posted: Sat Feb 03, 2007 10:54 pm Post subject: Why is it called a Z3 2.3 when the engine is a 2.5? |
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I just purchased a 1999 Z3 2.3. Why is it called a Z3 2.3 when the engine is a 2.5? 
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Z34ME |
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M3 GT Athens
Joined: 14 Feb 2006
Posts: 18
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| Posted: Tue Feb 13, 2007 2:41 am Post subject: |
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M52 Engines 2.3(on Z's) have the same cc. as the M54's called 2.5 or 325.
The reason is that BMW in order to get lower emmissions out of the 325 original 325engines basically changed the intake manifold with a smaller one and placed a different set up to the E.C.U.
So we have:
M50 -2.5lt with Vanos or not with an outpout of 192hp(older type engines)
M52 -2.5lt with Singe Vanos Unit and an outpout of 169/171hp
M54 -2.5lt with Double Vanos System with 192/198hp
Therefore BMW uses the term 2.3 or 323 for the same engine displacement but with lower emissions, lower outpout, better low end torgue and increased fuel economy.
Hope this helps a little. |
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ocz3
Joined: 11 Apr 2007
Posts: 2
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| Posted: Wed Apr 11, 2007 8:45 pm Post subject: Why does it say 2.3 on a 2.5? |
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I just got one also.
Did you ever get an answer?
I'd like to know also! |
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