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E21 (1975 - 1983)

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Old 10-01-2008, 06:45 PM
77tricarb 77tricarb is offline
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Location: michigan
Join Date: Oct 2008
Posts: 2
Mein Auto: 320i
Unhappy anyone recognize this beast?

I've just received the green light to begin working on this 77' 320i BMW......but theres a problem. I have no idea what type of engine this is....i know the body style but the engine was swapped and im lost. I left some pictures below.... if anyone has any idea what type of engine it is i would appreciate any information i can get. What i know now is this....where the engine ID is there is the following code: +5000980+, and thats all. The block has a casting code on it which is: 12524460. It is an inline 6 with 3 weber carbs, a four speed manual and tons of power. All the websites say the engine should have a code like M30 or some sort of mixture of numeric and alphabetic code.....but i cant find one anywhere. Im guessing its a M30 but theres so many styles im not sure which one it is (if it even is an M30 style engine).

Other random numbers i found on the block: (12500199), (5C74), (53624)...the last one was on the tappet cover next to the engines oil cap.
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Old 10-16-2008, 10:58 AM
PBC///2.7 PBC///2.7 is offline
Location: Ontario,Canada...Oshawa
Join Date: Aug 2008
Posts: 787
Mein Auto: 87 E30
have check out the Alpina looks like one from the CL(Alpina) to me and yes they used a m30 back then...I hope this may have helped you out there...that must be a very fun car drive can't have enough power on hand...hehehehe...
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Old 10-16-2008, 11:01 AM
Lanc3r Lanc3r is offline
Join Date: Sep 2004
Posts: 0
Mein Auto:
Probably an M30. But Im not sure. Should have some displacement code on the head.

I ask all my E21 questions at Bimmerforums.
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Old 09-07-2009, 08:45 PM
GCe21 GCe21 is offline
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Location: Missouri
Join Date: Sep 2009
Posts: 14
Mein Auto: '83 320i
either's really cool
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Old 09-08-2009, 12:18 AM
E36Dinan_801's Avatar
E36Dinan_801 E36Dinan_801 is offline
search is your friend
Location: Salt Lake City
Join Date: May 2009
Posts: 535
Mein Auto: Dinan 325I

Left hand side couple lines down Weber Carb conversion kit for 318 and 320`s
So possibly just a m30 with a conversion?? idk

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