Yeah yours is an oem head the 885 casting mark on the sides proves it
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How to: Tell what head an M20 has, the 2 second way.
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I just found that i have the AMC head. It's like my baby is sick now.
BMW how could you let this happen?
Last edited by cabriodster87; 06-16-2012, 05:46 PM.sigpic
Reich und Roll!
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Originally posted by reelizmpro View Postso if you have an 87 325i with a "2.5/2.7" embossed head and torx headbolts you know they were changed at some point.
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Originally posted by MattAvino View PostThe m20b25 I just pulled from my '87is has the '2.5' over the '2.7' stamped on the head. So has the head been replaced in the past?
This or the entire engine."I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj
85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
88 M3 - LACHSSILBER/SCHWARZE
89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER
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Probably snapped a timing belt before or overheated."I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj
85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
88 M3 - LACHSSILBER/SCHWARZE
89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER
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Originally posted by reelizmpro View Post87-88 cars came from the factory with 885 heads embossed with "2.5" only and hex headbolts. Even if your car was a super ETA 2.7 liter. 89-on heads had "2.5/2.7". These are the original specs, so if you have an 87 325i with a "2.5/2.7" embossed head and torx headbolts you know they were changed at some point.89 325i Coupe Auto Delphin Metallic - Sold
91 325i Sedan Auto Brilliantrot - Sold
83 323i Euro Coupe Manual Lapisblue - Sold
89 325i Coupe Manual Delphin - Sold
89 325i Sedan Auto Brilliantrot
87 325i Vert Manual Brilliantrot
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Originally posted by markt51 View PostI have a 1989 325i, manufactured in 9/88 and my head only has the 2.5 on the circle and not 2.5/2.7. Is this the original head? or was it replaced with an older one at some point?"I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj
85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
88 M3 - LACHSSILBER/SCHWARZE
89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER
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I'm assuming for those of you who have the machined down nub where it should say 2.5//2.7 or 2.5, the reman co machined the exhaust manifold mating surfaces down.
Sort of like the tell-tale casting dots on the bottom of the cylinder head, block mating surface, to tell you roughly how far the head is machined down. I believe there are 3 stages of dot depth, but I may be wrong. I have to look, i just know that once all those dots are gone, the head has been "used up".
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There is a head at my local bone yard which has the circle like the amc head. It does not have the other cast circle with 2.5/2.7 stamped on it, instead it has a bit like the eta at about cylinder 2 which just says 2.5. On the intake side it has 885 and the BMW enmblem. It is on a 1986 325.
What does this mean? Is it a 2.5 eta?.. can it be put on a 1990 325i ?Last edited by actletpone; 10-24-2013, 09:07 PM.
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Originally posted by whodwho View PostThose are not the intake ports of a 731 head unless it has been port matched to a 325i manifoldLast edited by meengreene30; 10-27-2013, 10:10 AM.sigpic
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