Benz240D
Do you really think that polishing ports will make a difference? For that matter why not CC the heads as well. I have done all that on engines that I expected performance from, but not a diesel. You should give credit where credit is do. Most of us on this forum own diesels not for their speed but all the other attributes. The fastest 240D would be left in the dust by my old and never missed slant six dodge dart.

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