toyotaspeed90
Cadet
- Joined
- May 23, 2007
- Messages
- 12
So, I have a few questions and was curious to see what people have for advice.
the boat is a 1990 Bayliner Capri 20.5'.... living where I do we don't take the boat out a whole lot (it probably has seen 30-40 hours of engine running time in 3 summers).... in any event, the engine developed a rod knock and has 2 low compression cylinders.... thought about rebuilding but the price to rebuild was higher than I really wanted to pay.
Locally someone was selling a 10K original mile 1992 4.3L complete from a firebird... apparently he bought it 10 years ago with intent to install into an old Astro Van, but things happened and it sat around on a stand (no concerns about it being out.. I've already looked at all of that). Also, my old engine is standard rotation, so I'm not concerned. Plan to pick up a cam from Summit as well.... anyways, onto the questions
1)... question is on the marine vs. automotive HG.... I've heard that the marine applications have a different head gasket, and the only real reason I've seen why is because of the freshwater cooling system. My boat doesn't have a system that pushes lake water through the engine... rather it has a coolant holding tank that flows through the manifolds and the block, which the coolant tank has a water to water cooler built in, and the freshwater cools the coolant tank.... so, my question would be -- since the temps of the engine are around the same as a standard automotive 4.3, is there any reason to use a marine head gasket?
2)... electric fuel pumps.... I've seen some debate on here but nothing too helpful other than some members saying to "buy the right pump".... only problem is... original is mechanical and the new engine would require an electric pump. I can easily wire it in and the boat already has a water separator on it.... someone else had made the mention of the marine ones being special... makes me wonder why... if there is some sort of flame-resistant coating (etc) on them just in case.... If there's nothing special other than having the label "marine" on it, then I'm not too concerned.
(FYI, I've worked in a couple parts stores for a few years and still have a friend at an automotive parts store... I'm well versed in many of the differences between automotive and marine stuff and many times lack-there-of).
the boat is a 1990 Bayliner Capri 20.5'.... living where I do we don't take the boat out a whole lot (it probably has seen 30-40 hours of engine running time in 3 summers).... in any event, the engine developed a rod knock and has 2 low compression cylinders.... thought about rebuilding but the price to rebuild was higher than I really wanted to pay.
Locally someone was selling a 10K original mile 1992 4.3L complete from a firebird... apparently he bought it 10 years ago with intent to install into an old Astro Van, but things happened and it sat around on a stand (no concerns about it being out.. I've already looked at all of that). Also, my old engine is standard rotation, so I'm not concerned. Plan to pick up a cam from Summit as well.... anyways, onto the questions
1)... question is on the marine vs. automotive HG.... I've heard that the marine applications have a different head gasket, and the only real reason I've seen why is because of the freshwater cooling system. My boat doesn't have a system that pushes lake water through the engine... rather it has a coolant holding tank that flows through the manifolds and the block, which the coolant tank has a water to water cooler built in, and the freshwater cools the coolant tank.... so, my question would be -- since the temps of the engine are around the same as a standard automotive 4.3, is there any reason to use a marine head gasket?
2)... electric fuel pumps.... I've seen some debate on here but nothing too helpful other than some members saying to "buy the right pump".... only problem is... original is mechanical and the new engine would require an electric pump. I can easily wire it in and the boat already has a water separator on it.... someone else had made the mention of the marine ones being special... makes me wonder why... if there is some sort of flame-resistant coating (etc) on them just in case.... If there's nothing special other than having the label "marine" on it, then I'm not too concerned.
(FYI, I've worked in a couple parts stores for a few years and still have a friend at an automotive parts store... I'm well versed in many of the differences between automotive and marine stuff and many times lack-there-of).
