Running naturally aspirated engines from Sixteen Power, JBS Racing had a fine 2022 Class 1 season—and one that was a successful proving ground for the 16-cylinder mills, https://www.speedonthewater.com/sixt...lass-1-season/

Thats really interesting. Congrats to Sixteen Power. The engine apparently broke in nicely.

Whats the weight of a Sixteen compared to a Mercury 1100 engine? Is the 1100 really 1700 pounds? If the Sixteen are two LS7s they are 570 each for a total of 1140 pounds plus maybe some closed cooling(is it closed cooled?) so maybe 1400 is that right? So two small blocks are about 300 lbs lighter than the Merc 1100 platform?

A few hundred pounds may not be a big deal in the size boats they go in but I wonder if most of the stuff except crank and cam is easily sourced. If I am correct right now the only place to get the Merc's refreshed is Merc?

That could be a issue.

Really? 600 Pounds in a raceboat isnt a lot?

I was thinking more along the lines of pleasure boats, didn't think they were looking only at race boats.

Since you brought it up I was trying to find how heavy the extreme class boats are. I didn't. I did find that the JBS sixteen power MTI was 12,000 lbs when they raced P1. They were one of the heavier boats.

I believe the weights Mercury has listed is including drive, transom assembly and transmission.

No, there are several people working on these, even if Mercury doesn't like that they are. Kaase and Boostpower are a couple I know of.

Twin 16 cylinders? Must be thursty....

That's great where do they buy parts from? I know someone that would like to be able to source some from other than Merc.

Just a guess, I'd say Kaase and any other high level builder is having their own pistons, rings, rods made if they need them for them. Even cranks and bearings, head gaskets.
They have relationships with manufacturers and if money is no issue.
Other proprietary parts I'd guess Mercrury...

I just checked Bams site, interestingly about everything internal in the short block and the heads including the head aren't sold separate except the main bearings.

If I remember right Geico got Kaase involved looking for durability with the QC4V.
Then also seen an interview where Kaase mentioned getting into them.