Leak proof, 10 yrs warrantee headers.
01-26-2012 | 10:35 AM
#61
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Joined: Jul 2007
Posts: 3,648
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From: Oneida Lake NY
Personally, i've always wondered why the exhaust is water cooled at all. Materials are around that can keep the heat in check and are used all the time. Turbines use them, motorcycle mufflers, etc. Why use a water jacket at all when you can use a dry header. I imagine a cmi, or other stainless header with a heat barrier as the water jacket with composite cover for the hot spots like at the head or joints. Has something like this been tried? The through hull could even be made to act as a water dump to cool the exhaust and pipe as it exits the boat while capping it from going upstream. Am I off my rocker in looney land?
Most of our engines get the air from the bilge area, more heat, less power.
Exhaust would not be pretty for long running at 1200 degress all day, and will not last long if they got wet or salt on them at the temp. Imagine this under your hatch
Air flow in the bilge, everything else has the advantage of some kind of air in/ air out cooling...such as the grill on your car, the cool air is deflected in (sometimes underneath no grill) and exits behind the engine.....how would you do this on a boat?
The cooling water is free, and cool. We all use it for a/c and generators. If this same cool free water was available on the road, you would see different technogly in cars. Snowmobiles use free snow and free ice cold air to cool their engines and exhaust.
Last edited by 4bus; 01-26-2012 at 10:37 AM.
01-26-2012 | 02:23 PM
#63
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Joined: Jul 2009
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From: west of chitown, il
Lot's of reasons. Our engines run very high EGT's all day long....all day. Drive your truck down the road at 4 grand while towing 20,000lbs with near flat tires, after 20 mins tell me if anything smells like it is burning. Do that all day every weekend
Most of our engines get the air from the bilge area, more heat, less power.
Exhaust would not be pretty for long running at 1200 degress all day, and will not last long if they got wet or salt on them at the temp. Imagine this under your hatch
Air flow in the bilge, everything else has the advantage of some kind of air in/ air out cooling...such as the grill on your car, the cool air is deflected in (sometimes underneath no grill) and exits behind the engine.....how would you do this on a boat?
The cooling water is free, and cool. We all use it for a/c and generators. If this same cool free water was available on the road, you would see different technogly in cars. Snowmobiles use free snow and free ice cold air to cool their engines and exhaust.
Most of our engines get the air from the bilge area, more heat, less power.
Exhaust would not be pretty for long running at 1200 degress all day, and will not last long if they got wet or salt on them at the temp. Imagine this under your hatch
Air flow in the bilge, everything else has the advantage of some kind of air in/ air out cooling...such as the grill on your car, the cool air is deflected in (sometimes underneath no grill) and exits behind the engine.....how would you do this on a boat?
The cooling water is free, and cool. We all use it for a/c and generators. If this same cool free water was available on the road, you would see different technogly in cars. Snowmobiles use free snow and free ice cold air to cool their engines and exhaust.
01-26-2012 | 04:35 PM
#64
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Joined: Jul 2007
Posts: 3,648
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From: Oneida Lake NY
I hear you loud and clear but if the heat is the problem then turbo's wouldn't work in a marine environment. Same goes for turbiines. I really believe it is possible with the technology we have today, it just hasn't been tried yet. With a thermal cover on a turbo you can touch it by hand, even after a hard pull.
Yes a turbo car with a turbo directly mounted on the exhaust manifold is HOT to the touch, however my diesel ford turbo was plumbed from the exhaust, on top of the engine, and the hood did not even come with a heat shield....no heat issues at all. The turbo was warm after running, but not hot like bare headers would be. Comparing an oil cooled turbo to SS headers seeing EGTs from 1200-1300 degress is not fair. Exhaust headers or monifolds off a car would be furnaces in there.
01-26-2012 | 05:52 PM
#66
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Joined: Dec 2005
Posts: 2,798
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From: Florida
A few quick answer to some of the posts.
The design/concept is not AIR cooled. That was just an example.
After the Miami show and once I further discussed this with "experts" I will provide more info.
The warranty is posible, since there is no possible mixing of exhaust and coolant.
Water, (fresh or salt, or what ever the way I get rid of the heat.
) can't get into the exhaust tubes, thus the engines are safe. That's all for now, more to come at a later date.
Thanks for the comments and interests.
P
The design/concept is not AIR cooled. That was just an example.
After the Miami show and once I further discussed this with "experts" I will provide more info.
The warranty is posible, since there is no possible mixing of exhaust and coolant.
Water, (fresh or salt, or what ever the way I get rid of the heat.
) can't get into the exhaust tubes, thus the engines are safe. That's all for now, more to come at a later date.Thanks for the comments and interests.
P
01-27-2012 | 11:26 AM
#68
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Joined: Jul 2007
Posts: 3,648
Likes: 32
From: Oneida Lake NY
A few quick answer to some of the posts.
The design/concept is not AIR cooled. That was just an example.
After the Miami show and once I further discussed this with "experts" I will provide more info.
The warranty is posible, since there is no possible mixing of exhaust and coolant.
Water, (fresh or salt, or what ever the way I get rid of the heat. ) can't get into the exhaust tubes, thus the engines are safe. That's all for now, more to come at a later date.
Thanks for the comments and interests.
P
The design/concept is not AIR cooled. That was just an example.
After the Miami show and once I further discussed this with "experts" I will provide more info.
The warranty is posible, since there is no possible mixing of exhaust and coolant.
Water, (fresh or salt, or what ever the way I get rid of the heat.
) can't get into the exhaust tubes, thus the engines are safe. That's all for now, more to come at a later date.Thanks for the comments and interests.
P
Make it better and make it look cool, you will have a winner!
IMO if merc doesn't make the 1350 prettier, they will lose
more market share to the other big guns.
01-27-2012 | 11:34 AM
#69
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Posts: 1,491
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From: LI, New York
I'm all for it, but I agree with the statements about "bling" It is so important in this industry......unless you chase the cruiser market?
Make it better and make it look cool, you will have a winner!
IMO if merc doesn't make the 1350 prettier, they will lose
more market share to the other big guns.
Make it better and make it look cool, you will have a winner!
IMO if merc doesn't make the 1350 prettier, they will lose
more market share to the other big guns.
01-27-2012 | 12:05 PM
#70
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Joined: Jul 2007
Posts: 3,648
Likes: 32
From: Oneida Lake NY
I disagree..... I think you're finding more new boats using simplicity as their bling factor. Also, I'd rather have a "less blinged" out motor that ran everyday than a motor that spend more time in the shop then in the water. For example, the SVX40's OL and the new SV43.
However, the biggest boat show in the US....the Miami boat show.....you're telling me everything will have a plain wrapper this year? lol
A 525EFI might look plain to us, but to the majority of boaters it has BLING! The 1350 looks like a 496ho.
Lot's of big money boaters out there that LOVE to open their hatches. Won't make much sense in the engines have plain plastic shrouds, and matt finish blocky exhaust
