"With all the MD6 series still running they would sell a grunch of them over time, and the design cost should be amortized accordingly.
It sounds to me like your only other choices are to ante up the 1.5K or else replace your engine. Both sound pretty unpalatable to me. "
Wow, thanks for the great information! My motor is an MD6B, in production for roughly 9 months. There weren't many made back in 1975, and those still running are in short supply. Granted the 6A was identical, save for the dynastarter, but this precursor model is up to 4 years older than a 6B.
I'd be interested to hear if anyone out there with an MD7 (the replacement for the small block MD6) has experimented with their exhaust
manifolds like dacabs mentioned? Or, more importantly, if you know of a parts source for MD7's?
BTW, not looking for moral support here, nor a quick fix. Why else would they call our boats 'labors of love'?