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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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Old 12-24-2004, 12:52 AM   #1 (permalink)
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What issues surround just swapping long blocks but retaining the M42 intake/exhaust/OBDI system, etc.? This is in context of using an available M44 1.9L long block in lieu of rebuilding the existing M42 1.8 in a '91 318iC.
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Old 12-24-2004, 05:59 PM   #2 (permalink)
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there wont be any significant power increase with the 1.9L if that's what your looking for. i would just rebuild or replace your current m42 with another early m42
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Old 12-24-2004, 06:00 PM   #3 (permalink)
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not quite sure why you'd want to do this swap. please a little more info
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Old 12-24-2004, 07:15 PM   #4 (permalink)
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Originally posted by MrM3@Dec 24 2004, 07:59 PM
there wont be any significant power increase with the 1.9L if that's what your looking for. i would just rebuild or replace your current m42 with another early m42
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Just because I found a 1.9 M44 in good shape that I can swap cheaper than rebuilding the M42
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Old 12-25-2004, 12:34 AM   #5 (permalink)
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just do M50.
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Old 12-25-2004, 02:06 AM   #6 (permalink)
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well I'm assuming the mounts are probably the same and so is the tranny/rear. I'd imagine that the computer wouldn't be too much of a problem thing. just strip down the m44 engine to the block and use all retaining parts from the m42 engine that fit and hope it works. this is basically what I did w/my 6 cylinder swap.
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