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AMC 327CI V8-225 supercharging boat |
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Tl-01a
AMC Fan Joined: Jan/18/2017 Location: Switzerland Status: Offline Points: 9 |
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Posted: Jan/18/2017 at 7:54am |
Hi everyone!
My dad owns a 1964 wood sport boat, its a special built, only 1 piece exists. The past 15 years my dad used to restore it in our garage, it took him more than 1000 hours. The boat sits on a trailer and we use it to go water skiing and just for having fun on the weekends. Its only used on Swiss Lakes, it never touches salt water. Its powerd by a Graymarine Fireball V8-225, the engine is based on an AMC 327 with Graymarine headers and camshafts. Its cooled by a 2 cycle water cooling system build from kirry parts. Sea water never touches the engine. The engine runs to the right side, other than car engines running to the left. For more performance it got upgraded with a Holly EFI on a custom made mount. There are no laws for emissions or noise in boats that old, its more or less straight piped. Every 5 or so years it has to go for a checkup by a shop certified by the goverment, they will ajust the eingines settings to improve the emissions. The engine should make arround 250HP, this is enough for water skiing, but power is still a little tight. The boat is about 5000 pounds and the shape is not perfect to be very fast. It makes arround 35MPH right now. My dad would like to super or turbocharge the engine to gain a little more power. As far as we know there are no plug an play solutions for this kind of engine. Do you have any recommendations? Greetings from Switzerland!
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19611 |
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As you stated, no plug and play solutions. A crank driven supercharger like a Vortec would be reasonably easy. With straight pipes you could bring both into one turbo in the rear, or run two small turbos. With premium fuel you're going to be limited to about 5 psi without running some kind of timing control. The car 327 cam was rather mild, you can gain some power by having it reground. I don't know about the boat cam, especially with it turning the opposite direction. All really depends on how much room you have in the engine bay. The Vortec is probably the easiest solution, but you'll have to make custom mounting brackets. That depends on what is driven by the crank now -- the water cooling system probably uses an external pump, not just the engine mounted water pump.
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Frank Swygert
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Rebel327
AMC Nut Joined: Jan/26/2014 Location: Toledo Ohio Status: Offline Points: 358 |
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Most guys get rid of side draft carbs and add an automotive 4 bbl intake and marine carb. This is your restriction. Boats generally run around at 2500 rpm so performance not needed. Not much else you can do except get cam ground.
If you choose other options, it's all custom. |
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SC397
AMC Addicted Joined: Apr/30/2009 Location: Michigan Status: Offline Points: 5428 |
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C'mon Cuz, I am sure that we could come up with our own Supercharger kit for a 327. How hard could it be... |
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Boris Badanov
AMC Addicted Joined: Dec/14/2013 Location: NH USA Status: Offline Points: 4209 |
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Leaf blowers...
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Gremlin Dreams
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Boris Badanov
AMC Addicted Joined: Dec/14/2013 Location: NH USA Status: Offline Points: 4209 |
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The leaf blower comment was not a joke.
http://www.rockfordracing.com/images/misc/blower.jpg But avoid ANY advertised electric superchargers. They are junk, a rip off. A high powered leaf blower will add some hp as long as the fuel air mixture stays correct under the small boost you will get. |
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Gremlin Dreams
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uncljohn
AMC Addicted Joined: Jan/03/2013 Location: Peoria AZ Status: Offline Points: 5394 |
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It would see to me that the expense of trying to come up with a belt driven supercharger for a right hand drive boat engine that has no plug and play options best be applied to a turbo charger. Both have to be fabricated but by in large turbo applications are fabrications anyway. So many turbo application kits consist of fabricating pieces supplied for them. As to regrinding cams, that is pretty much a lost cost too as there are no blanks available should you want one. That is a big enough problems for those with left hand engines.
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70 390 5spd Donohue
74 Hornet In restoration 76 Hornet, 5.7L Mercury Marine Power 80 Fuel Injected I6 Spirit 74 232 I-6, 4bbl, 270HL Isky Cam |
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Rebel327
AMC Nut Joined: Jan/26/2014 Location: Toledo Ohio Status: Offline Points: 358 |
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I am not sure I understand their cooling system however boats do use the exhaust manifolds to cycle cooling water...if so....not so much on the Turbo. A cam swap and automotive 4 bbl intake with carb should get them 50 hp. IMO
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Lucas660
AMC Addicted Joined: Apr/16/2012 Location: Vic, Australia Status: Offline Points: 1344 |
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The water through the exhaust is the "muffler". I agree that the cam regrind will make a world of difference.
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Boris Badanov
AMC Addicted Joined: Dec/14/2013 Location: NH USA Status: Offline Points: 4209 |
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Note, only use a marine type carb in a boat.
Car carbs are not designed to catch over flow and can burn or blow up your boat. |
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Gremlin Dreams
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