how to tell a m50b20 from a m50b25?

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pauldeacs
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Post Wed Apr 06, 2011 10:13 pm

visually how can you tell a m50b20 from a m50b25? and likewise a m52b20 from a m52b25?
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LagunaE30
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Post Thu Apr 07, 2011 1:59 am

m20b20 the inlet manifold has smaller ribs however dont always go by this as some engines will have a 2.5 inlet fitted, and of course as will said the engine number
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e30-EVN
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Post Thu Apr 07, 2011 10:38 am

M50b25 has an 80mm maf so messure this, if it doesn't measure up 80mm then its a 2.0.

Or engine number as above^^
A 2 door e30 with 8 cylinders, what could be better winkeye :D
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