LSx into Jet Boat??
06-22-2010, 10:42 PM
#161
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First time on the water with it!
http://www.youtube.com/watch?v=5qI0BsAc9WI
3rd time on the water with it
http://www.youtube.com/watch?v=5qI0BsAc9WI
3rd time on the water with it
06-23-2010, 08:26 AM
#164
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WOW, that badass. How fast did it run with the LQ4 in it and which impeller is in the pump? I like how you re-drilled the heads for the Ford manifolds, great idea! At some point I'd like to get a jet-boat (we have an outboard tunnel hull).
06-27-2010, 03:51 PM
#166
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I moved over from a Hydrostream mod-v tunnel outboard to a jet...those are FUN boats.
07-06-2010, 09:40 PM
#167
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Did you have to build front and rear mounts or just the side mounts? Thinking about this too. Found a daycruiser project with a Berk f drive that had a 454 in it. Also the exhaust manifolds you used, 351 Cleveland, is it the same as the Winsdor/302 or is it bigblock ie 460 spaced. Anyone????
mike
mike
Last edited by finiata; 07-07-2010 at 11:58 AM.
07-08-2010, 12:08 PM
#168
Glad to see you got your boat done, too.
I got mine wrapped up this weekend, but I'm using an LS1 block,closed cooling system, carb, and over the transom headers...so still a different setup. You're right though, they run just as good as the big blocks or better. Mine had a 468 Olds and this one will rev just as high, but seems to get there quicker. I still have to move the fuel to the rear to get the balance right...
I got mine wrapped up this weekend, but I'm using an LS1 block,closed cooling system, carb, and over the transom headers...so still a different setup. You're right though, they run just as good as the big blocks or better. Mine had a 468 Olds and this one will rev just as high, but seems to get there quicker. I still have to move the fuel to the rear to get the balance right...
07-08-2010, 05:17 PM
#169
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Boat looks good! Could you explain your closed loop system? ow does the water get cooled? A diagram maybe? Haven't got the/my boat yet but definitely gonna do this swap now, hell I have most everything I need.
07-09-2010, 08:21 PM
#171
The disadvantages are weight, slight loss of horsepower (until I go to an electric water pump), complexity, and obviously more pieces that could fail...
07-19-2010, 06:08 PM
#173
Some good looking boats on here with LS powerplants!
Some updates with my boat which is a '97 Ski Centurion 21' Elite. Began installation of a 2004 LS 5.3 engine with around 10K miles on it (sitting at a friends body shop from a totaled truck for 4yrs). This boat was custom setup with a 502 in it before I got it for the previous owner. Also has trim tabs, hydraulic steering, and a nice stereo with 2 Alpine amps, old school 12 disc CD changer, 4 tower Boston Acoustic speakers, and 6 more speakers inside with a 10" sub in front of the driver seat. It should thump! The 502 was removed and then the boat was sold to me.
Got the engine bolted up to existing Indmar trans/bellhousing required 4 notches in it to clear the rear upper timing bolts as they were contacting it. Shorter bolt heads would've cleared I believe. Running a Camaro flywheel with the trans/spline adapter hub from the old 502 setup. Camaro Fbody pan on the motor with Camaro oil pump.
Running some steel SBC to LS style adapter plates and then the boat mounts. Still need to properly position them and then redrill new holes in the aluminum plate that resides in the stringer.
Found a suitable source of water jacketed exhaust manifolds designed for LS style Gen III engines. Those arrive end of the week. Will post pics and more details when I get them and they actually work! They were not cheap but are all aluminum 2 piece style and look very nice.
Teaser photo. Next up is fuel system, wiring, cooling.
This is a fresh water boat so I'm thinking I should do a closed loop cooling system and running the stock style water pump with a Tstat.
Can people post up what their heat exchangers look like and where to get them and/or place them?
Some updates with my boat which is a '97 Ski Centurion 21' Elite. Began installation of a 2004 LS 5.3 engine with around 10K miles on it (sitting at a friends body shop from a totaled truck for 4yrs). This boat was custom setup with a 502 in it before I got it for the previous owner. Also has trim tabs, hydraulic steering, and a nice stereo with 2 Alpine amps, old school 12 disc CD changer, 4 tower Boston Acoustic speakers, and 6 more speakers inside with a 10" sub in front of the driver seat. It should thump! The 502 was removed and then the boat was sold to me.
Got the engine bolted up to existing Indmar trans/bellhousing required 4 notches in it to clear the rear upper timing bolts as they were contacting it. Shorter bolt heads would've cleared I believe. Running a Camaro flywheel with the trans/spline adapter hub from the old 502 setup. Camaro Fbody pan on the motor with Camaro oil pump.
Running some steel SBC to LS style adapter plates and then the boat mounts. Still need to properly position them and then redrill new holes in the aluminum plate that resides in the stringer.
Found a suitable source of water jacketed exhaust manifolds designed for LS style Gen III engines. Those arrive end of the week. Will post pics and more details when I get them and they actually work! They were not cheap but are all aluminum 2 piece style and look very nice.
Teaser photo. Next up is fuel system, wiring, cooling.
This is a fresh water boat so I'm thinking I should do a closed loop cooling system and running the stock style water pump with a Tstat.
Can people post up what their heat exchangers look like and where to get them and/or place them?
07-19-2010, 09:59 PM
#175
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It uses a marine heat exchanger...the heat exchanger replaces the radiator as far as the engine is concerned. The heat exchanger gets cooled from the lake water. Water comes from the jet into the heat exchanger and then out the back of the boat. On the engine side, it still uses a water pump and thermostat. The main advantages are keeping trash out of the block (sand, dirt, etc), getting the LS up to operating temp (I don't have water logs to "pre-heat" the water), and if I fail to winterize properly...the engine isn't hurt.
The disadvantages are weight, slight loss of horsepower (until I go to an electric water pump), complexity, and obviously more pieces that could fail...
The disadvantages are weight, slight loss of horsepower (until I go to an electric water pump), complexity, and obviously more pieces that could fail...
07-20-2010, 12:30 AM
#176
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I bought a heat exchanger and was going to use it but decided against it. I wanted to clean up the looks of my motor, since it sits out in the open and the setup I'm running now works great. The heat exchanger that I bought was a Mercruiser 470 4" and I still have it in my shop. I would sell it to one of ya'll for 50 bucks plus shipping to help someone get another LS on the water. It is heavy so shipping will be about 30 or 40 bucks but they go on Ebay for 100 to 300 I think.
07-20-2010, 10:09 AM
#177
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I bought a heat exchanger and was going to use it but decided against it. I wanted to clean up the looks of my motor, since it sits out in the open and the setup I'm running now works great. The heat exchanger that I bought was a Mercruiser 470 4" and I still have it in my shop. I would sell it to one of ya'll for 50 bucks plus shipping to help someone get another LS on the water. It is heavy so shipping will be about 30 or 40 bucks but they go on Ebay for 100 to 300 I think.
07-20-2010, 11:59 AM
#180
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First time on the water with it!
http://www.youtube.com/watch?v=5qI0BsAc9WI
3rd time on the water with it
http://www.youtube.com/watch?v=5qI0BsAc9WI
3rd time on the water with it
BTW had fun talking to you on Power Tour.
(silver T/A)