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#1
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2.6 vs 3.0 engine blocks
Is it possible to bore a 2.6L block to 3.0L specs without any trouble e.g. decreased wall thickness causing overheating or shortened engine life?
I thought both m103 blocks are identical, except 2.6L having thicker walls, however I saw that water passages are different and these two blocks don't look the same.
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2001 E200 Kompressor Avantgarde 1987 300E 5-speed 1976 450SLC 1975 280S (sold) 1973 230.6 (sold) |
#2
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I doubt it. The two blocks have different coring. Both have the same stroke, but the 3.0 has a larger bore and they are siamezed - no coolant between the bores. The 2.6 has a full cooling jacket around the bores.
Heads are different with the 2.6 having smaller valves and ports. Too bad Mercedes didn't increase displacement by just varying stroke on the same long block like Chevies, but Mercedes never seems to do anything the easy way. Duke |
#3
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Heads are very different for sure, I just wanted to rebore the block and use the existing crank and rods.
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2001 E200 Kompressor Avantgarde 1987 300E 5-speed 1976 450SLC 1975 280S (sold) 1973 230.6 (sold) |
#4
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AMG converted the M103 2.6 to 3.2L for installation in the W201, using the head from the 3.0L version for the larger valves.
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