BenzWorld Junior Member
Date registered: Aug 2011
Vehicle: Various W114 coupes 250,280 (4), 350 R107, 250 W123, Alfa(s) 164, GTV6,
Location: New Zealand
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Hi 3.5 Tony, question for you, are you looking at boring out a 3.5 to 5.6?? Or are you looking at the newer 560 (W126) motor transplanted into the W111? What about the 4.5 motor bored out to what ever. John Olsen of the SL market letter claims that the 450 motor is very under developed and can produce a lot more power. We are looking to adopt this in a SL (R107) project. Looking for about 400hp motor, without any external significant changes. The fuel injection can be remapped and more fuel pushed in, bigger valves, slightly higher compression, head bench flowed and ported, headers and rework the inlet manifold.
Also looking to put a 6.9 into a SLC (R107).
Just an idea.