Without knowing what OMC did to the carbs, it comes down to trusting them. Since both carbs have just one Orifice, it makes it appear that that is the way it supposed to be. Unlikely both on the same side fell out.
BTW, those aren't Jets, they are Air Bleeds
How did the motor run prior to this?
My experience with 90 degree V6s has made me look at them with Suspicion, and not to trust them in any Application. That Opinion was formed in the late 70s, early 80s, long before there was a World Wide Web.
Hmm, Odd. When I checked the Parts List for your engine, it says only 1 is used, then when I looked at the Parts list for an 85hp of the same year, it shows 2. The parts list for the crossflow 115 also shows only one.
Nylon is not a good choice for a Winch Rope, as it can Stretch, so you are dealing with an Elastic Band which can store a lot of Energy. Polyethylene is a safer choice. Also avoid Polypropylene, as it too is stretchy, though not as bad as Nylon
Raw water cooling is where water taken out of the lake/river/ocean and is run thru the engine, Closed Cooling is where the engine has a closed loop of coolant that remains in the engine and its heat is shed in a Heat Exchanger that has the lake/river/ocean water going through it. You mentioned...
Canadian made Fiberform. I will guess, from the Serial#, it is a 1971. Engine cowl is definitely a 79, and has the customized skeg version of the gearcase. It might be the camera, but the Transom looks a bit curved. Tilt the engine most of the way, then grab the lower unit, and see if the...
Here is a link to a bit of info about Fiberform
http://www.fiberglassics.com/library/index.php?title=Fiberform
a 1979 Merc will have Cowl Decals like this
The Decal looks like an early 80s one, could be an 83
That knock sounds Expensive
Did someone drill a Hole in the Exhaust Housing figuring they would gain a Bunch of Horse Power? I ask, cause the engine doesn't sound like it is running fast enough to be forcing the Exhaust down and out the...
In 1986, I saw the Power and Torque Curves for the Standard 150 and the 1st XR2. The XR2's power peaked higher(not by much) than the Standard 150, but at a lower Rpm, and the power was dropping by the time the engine was a attaining the Rpm where it was rated at 150
