Engine swap - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 10-10-2008, 01:29 AM
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Engine swap

I have a 1987 325is and I am thinking about buying a 1987 325 sedan. I'd like to know if it's possible to swap the engine from my 325is to put into the 325 sedan? If so, please let me know.
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#2 (permalink) Old 10-11-2008, 12:19 PM
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Cant see why not, whats the difference??? or do you mean the sedan is not injection?

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#3 (permalink) Old 10-11-2008, 03:26 PM
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umm.... the 325 (no I ) has the Eta block right? which then that would be a no... btw what it the redline on the 325 same as you is?

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#4 (permalink) Old 10-11-2008, 09:40 PM
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They're both e30 models same year and same m20 engine. The difference is the displacement. the 325 is a 2.7 liter and the 325is is a 2.5 liter. I figure if the 325is has a smaller engine, the conversions shouldn't be a problem. Anyone disagree?
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#5 (permalink) Old 10-12-2008, 05:32 AM
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What about all the wiring for the injection system etc.

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#6 (permalink) Old 10-13-2008, 06:19 PM
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I'm not sure.
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#7 (permalink) Old 10-13-2008, 09:05 PM
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nope I wouldnt bother.... to my knowlage you need all the wiring and ecu swapped over.... not worth it for the small bit of HP....

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1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
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#8 (permalink) Old 10-14-2008, 11:54 AM
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the 2.7 makes less power than the 2.5...but makes more TQ...if you want a higher reving faster road race car use the iS motor...if you want to be faster stop light to stop light...use the Eta get a chip and a 3.46 LSD for it...the torque will scare you...lol

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#9 (permalink) Old 10-14-2008, 07:38 PM
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So it is actually possible to swap engines? That's what is most important to me. The reason why I say that is because I totaled my 325is, but the engine is still good. I just bought the 86 325 sedan today. I didn't want to put money to waist so I bought it hoping that when time comes to replace the engine in the sedan i can just pull the engine out of the 325is. I had the engine rebuilt last year and it has under 3500 miles so it would be a complete waist to junk my car or sell it for less.
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#10 (permalink) Old 10-16-2008, 10:39 AM
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yep piece of cake...just do a search for it over on E30tech or R3vlimited, theres a few threads on it there

Kyle Sutherland

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