Quote:
Originally Posted by M.B.DOC
The engines are simular, however the 1991 engine has a different exhaust manifold. Internally the engines are very different. Different head, pistons, & the 1991 engine uses an intake manifold pre-heater. By swapping the manifolds the engine should work, but if you live in a "cold" climate area the engine will be sluggish durning warm-up.
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M.B.Doc --- could you describe more about intake manifold pre-heater? Is it mount on the intake manifold? Can it separate from it? I think that my 1991 190E 2.3 has some problem on that pre-heater. It drains more power on my car. Thanks