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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 05-08-2005, 02:30 AM   #1 (permalink)
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First of all I'd like to say sorry for the big pictures...

I just went to install my radiator into my 1990 325i convertible and found these things that are different.

My old engine had these screw holes in the front

[attachmentid=21678]

for this part of the cooling....

[attachmentid=21679]

But the new engine doesnt have these mount points..

[attachmentid=21680]

and where the second mount point is on my old engine there is this... what plugs in there?

[attachmentid=21681]



-Casey
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What Is The Difference-cooling_mounts_old_engine.jpg   What Is The Difference-cooling_part.jpg   What Is The Difference-front_of_new_engine.jpg   What Is The Difference-new.jpg  
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Old 05-08-2005, 09:43 AM   #2 (permalink)
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I'm totally just pulling this out of my ass... oil cooler? Or does an oil cooler run the oil through a radiator type thing? I'm not sure. Not trying to wast your time, honestly.
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Old 05-08-2005, 09:50 AM   #3 (permalink)
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the oil cooler has 2 lines running out of it that go into the engine right next to the oil filter... and your not wasting my time at all... thanks for responding
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Old 05-08-2005, 01:05 PM   #4 (permalink)
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I think youíre engine is newer than the other one, the older engine had a rubber hose instead of the metal on in pic2 but I canít make out pic4
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Old 05-08-2005, 03:00 PM   #5 (permalink)
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i can take another picture if you want, it was late at night and i know they didnt come out, if the older engine had a rubber hose then i have an older engine...

becaue the metal hose came off my new engine
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Old 05-08-2005, 08:04 PM   #6 (permalink)
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After a day of research, I have found this..



my old engine coolant diagram

[attachmentid=21727]

My new engine Diagram, this has that extra port(thats what i think its called ) #10

[attachmentid=21717]

any ideas on how to make the first diagram work with the second one? the things that are the problems are how the lining gets to the reservoir and there is another port that wasnt on my old engine.....


thanks for your help... Casey
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What Is The Difference-23new_engine.png   What Is The Difference-23old_engine.png  
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Old 05-09-2005, 12:08 PM   #7 (permalink)
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you bought an engine that is older then your car, obviously. looks like you got like an 87 or so engine? they used those old coolant resevoirs then.

you're going to need all the coolant lines off your original engine, since they changed alot about how coolant was routed (the resevoir was on passenger side on your "new" motor but it was on driver side on your original motor).

honestly, i'm not sure what all you'd have to swap going BACK in time as you did, but its going to be pretty much everything.
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