So that is what the dual Merc powerhead adapter here is all about!
What a picture of that dual power headed Merc racing engine!
That is what that adapter and coupler here is all about except in this case the Merc engines are one front and one reversed. I can only suppose that was done to fit modified Quincy pipes where the picture must have exhaust blowing out the bottom out of some kind of dump through the base adapter plate for the engines.
Those racers then sure had imaginations they turned into results! :)
No sounds like Flatheads & Mercs on pipes.
I am sorry, I can offer no knowledge on the Quincy Z engines because of heavily being into stock outboard racing until 1983 aside from hearing about them. I was and still am of the feeling that the Flathead was not yet at its end when it was decided to go the Z route.
To me there are no other racing sounds that can compete with a Flathead 6 or on the other side a Quincy-Merc or equivilent Merc 6 Deflector on pipes! I mean nothing, no Indy car, no dragster, no nothing makes me shiver the way those Quincys and their padded block Deflector competitor 6s do when they run, they are so unique and so catching, they take your breath away, in my case always. Running a 44 Flathead is always impressive but the 6s!!!!!!!!!!!!!! :)