Classic Black Max Mods Questions

**derekfl** · 06-03-2023, 07:50 AM

You would feel different after the air pump, efi pump, and coils all started going out. More fuel efficient, but so is pulling back on the loud handle…

**FMP** · 06-03-2023, 10:40 AM

Where's that 2.0L Formula spec..

**OnPad** · 06-03-2023, 12:30 PM

I worked over a 1996 150hp 2.0, a couple months ago.
Shortened the tuner, solid mounts, opened up adapter plates, and exhaust chest. Raised the exhaust port to 1.550, the transfers are already high at 2.120, I cleaned them up. I raised the boost port about .040. Deflashed the rod slots + a little more.
My engine has small transfers, compared to a 175 or 200hp.
I was hoping for 175+hp and a higher rpm range. We'll see if I ever run it. Kinda hard when you have a bunch of 2.5 litres, and a 3l also.

**skialot2** · 06-03-2023, 01:03 PM

Originally Posted by derekfl

recentlyni have seen a lot of 75-115 black max cowls for sale. possibly somebody is putting the stickers on the sides of refinished cowls?

Probably Merc only used the Black Max label on V6's. At the time they were as big as they got.

**tlwjkw** · 06-03-2023, 01:39 PM

1976 Mercury Black Max Outboard Motors Ad-DH0263 (vintagepaperads.com)

**skialot2** · 06-03-2023, 06:46 PM

Originally Posted by derekfl

recentlyni have seen a lot of 75-115 black max cowls for sale. possibly somebody is putting the stickers on the sides of refinished cowls?

Those covers are from 2 different motors. The cover on the left is from a V6. The cover on the right is from a 3 cylinder. You can tell by the latch system. The 3 and 4 cylinders use a hinged front latch with a single spring catch. The V6 uses a double latch system with a separate front cover. You can see the 2 latches on the V6 cover would not even be covered by the hinged cover on the 3 cylinder. Plus, the lines in the decals are thicker and the lettering is bolder on the V6.