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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 08-30-2007, 04:11 PM
Haaken Haaken is offline
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Mein Auto: '88 325e/ 89 Camaro
how to boost the power on a 2.7 eta engine?

like the title says, what can i do to boost the power?

I know a chip would help, but what mechanical things can i do? Iv heard that swapping an "i" head is good, but then i also heard that that is only for the 1988 year. finding coherent information on the internet is hard(unlike for my camaro).
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  #2  
Old 08-30-2007, 09:30 PM
SWISS SWISS is offline
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Mein Auto: E30 S52 / S52 M roady
Quote:
Originally Posted by Haaken View Post
like the title says, what can i do to boost the power?

I know a chip would help, but what mechanical things can i do? Iv heard that swapping an "i" head is good, but then i also heard that that is only for the 1988 year. finding coherent information on the internet is hard(unlike for my camaro).
DOHC swap.


/thread
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  #3  
Old 08-31-2007, 12:10 AM
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AdamAnt AdamAnt is offline
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Mein Auto: 1986 325e
323i head, intake manifold and throttle body swap
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Old 08-31-2007, 04:33 AM
Haaken Haaken is offline
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ok, i sspent a couple hours last night researching and so far this is what i know.

If i add a 325i head, cam pistons,intake manifold, and ecu, ill end up with a stroked "i" motor.

Now the 323i swap,, im not to sure about now, what kind of power would that make?
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Old 08-31-2007, 05:32 AM
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AdamAnt AdamAnt is offline
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325i head would be quite alot more expensive than a 323i swap. I hav eno experience with the 325i head swap, but ive heard it is quite difficult to get done right. the 323i head swap however, is simply a matter of bolting the 323i head(731) casting to the eta bottom end, then accompanying that with a 323i intake manifold throttle body and an m30 AFM(with m20 internals), and running it all with a 325i DME. quite sure it is close to the 200hp mark
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Old 08-31-2007, 05:59 PM
Haaken Haaken is offline
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Mein Auto: '88 325e/ 89 Camaro
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Originally Posted by AdamAnt View Post
325i head would be quite alot more expensive than a 323i swap. I hav eno experience with the 325i head swap, but ive heard it is quite difficult to get done right. the 323i head swap however, is simply a matter of bolting the 323i head(731) casting to the eta bottom end, then accompanying that with a 323i intake manifold throttle body and an m30 AFM(with m20 internals), and running it all with a 325i DME. quite sure it is close to the 200hp mark
i would love more info on this 323i head swap if you have it. I dont really know much about that one at all. Also, the 323i was never sent to the U.S. was it?
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Old 09-01-2007, 07:05 AM
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AdamAnt AdamAnt is offline
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what would u like to know? im not sure about the availability in the us, they grow on trees here in Aussie land .
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  #8  
Old 09-07-2007, 05:57 PM
einstein57 einstein57 is offline
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i hear the i head is pretty much a direct bolt on. There was an alpina 2.7i stroker chip on ebay. grab it if you plan on getting the head. there are a couple write ups on supereta
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