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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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Originally Posted by Starmavin
If you have the 89 325i motor put it in. The 2.7 intake ports are about half the size of 325i ports and will allow fuel and oil to collect at the bottom of the runners. (been there done that) It can cause continuous blue smoke at every start up, I thought it was the valve seals but once I took off the intake oil ran down the block, so I put on the old intake and it never smoked again. Plus to do the swap you have to change out the harmonic balancer and mount the I sensor there, and if you have the motor out, you are better off with the 325i radiator. The 325es radiator has the lower coolant hose next to the power steering pump and it has a tendency to cut into hose. Plus you can lose the coolant tank on the passenger side and use the 325i tank that mounts to the drivers side.
It might take a weekend or two, but you'll be happier with the "i" motor.
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