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Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here.
Sponsored by Active Autowerke

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Old 09-11-2012, 04:58 PM   #1
redneckrice94
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Join Date: Dec 2010
Location: Minnesnowda
Posts: 386
My Ride: 2000 323i
Boost Issues?

First off, I know a supercharger is the easy and cheap way to go and there is a ton of support for superchargers but turboing a 323i is more difficult.

I am wondering how many people have turbo'd their cars and have kept the aluminum block? Based on what I have read and heard, there are quite a few people who believe that swapping in an Iron Block from an OBD2 E36 328i is the way to go.

I am planning on turning this into a road course track car that will see the streets on weekends but it will mostly be a road course car. With that being said, if I do the Iron Block swap, I would only assume that the weight distribution of the car would then be off due to the added weight of the engine and turbo. With this added weight in the front and weight that will be shed from the rear I just do not see how this would help me.

Has anyone fought with this before? I want to go turbo because of the torque and powerband will be stronger.
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Old 09-15-2012, 09:50 AM   #2
jacobs323i
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Join Date: Jul 2008
Location: saint paul
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My Ride: blown 323i
Well you know I am turbo with stock alum block, I just cryogenic treated it and have hit 500 rwhp with no prob. So I doubt with the power levels u r going to be at that it will crack. But if you r worried just cryo it it is cheap they did my block for 100
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Old 09-16-2012, 12:10 PM   #3
redneckrice94
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Join Date: Dec 2010
Location: Minnesnowda
Posts: 386
My Ride: 2000 323i
I could do that. When I called Active Autowerke last week they had told me to go with the iron block because it is stronger but cryo treatment would be good too.
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