Got it from my father-in-law... |
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gedds1993
Newbie Joined: September-18-2024 Location: Kentucky Status: Offline Points: 2 |
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Posted: Yesterday at 9:05pm |
So I bought a boat from my father in law. A little history, bought the fiberglass hull in 1973 from a company in Virginia that effectively took a 20' Southwind hull, made a mold, tweaked it, and made boats from it. The hull is close to a 1/2" thick of glass, no filler. The father-in-law and his dad glassed in the stringers, floor, put a Volvo in it originally and drove it for years. It is a direct drive boat and as far as I understand is pretty much the same as the Southwind minus a different engine, propeller, and rudder
Mechanically it has a 1965 GM 327 that was rebuild with 30 over factory in 1993. Has a marine intake manifold with a Rochester 2 barrel carb. Log style exhaust manifolds with a single port forward and two ports aft (maybe plugged mid riser on each). The engine feeds a 1:1 velvet drive which drives a 14" propeller (unsure of pitch but maybe somewhere around 14?). I just finished installing a bracket I welded that holds the clamp for the cable steering and now (due to better positioning) the boat has a full 35 degree either side. My question is in regards to the cooling system on this boat. Currently the boat is not a closed system, does have a transmission cooler, and does not have a thermostat or pressure relief. When out on the water temperature goes from 140 degrees at idle (takes a while to get there, not so much when under load) to 180 degrees when rpms get around 2500 or higher for a bit. I am thinking a) the boat should get up to temp a little quicker than it does and b) it should swing like it does. The current cooling path is as follows (at least the best I can follow it without taking anything off). Inlet -> pump -> transmission cooler -> bottom port on AFT end of the PORT exhaust manifold... (here is where things get iffy)
If someone could help me understand this a bit better / instruct me of a way to route it better that'd be great. Also if I were to add a thermostat would an inline thermostat with a bypass be the best place to start? What would be the best way to configure the cooling for that? Anyways thanks for the laughs and comments.
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11050 |
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I'd probably look into getting a thermostat housing and thermostat and duplicating the setup on a PCM or Indmar or Mercruiser Chevy inboard.
Not knowing what you have for a raw water pump, circulating pump setup, I'd probably try duplicating the Indmar setup with a crank driven raw water pump. Sine you posted a drawing, I figure you'd know how to post a few pictures of the engine to show what you're working with for manifolds, pump(s) etc.
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fanofccfan
Platinum Member Joined: December-13-2009 Location: North Bend NE Status: Offline Points: 1774 |
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A few pictures of the boat would also be a nice addition.
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2004 196 LE Ski 1969 Marauder 19 1978 Ski
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