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Old Jun 30, 2008 | 10:53 AM
  #21  
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In a boat tho unless he is running a direct drive boat you can purchase counter rotator gearcases for mercruiser or volvo.....So making the motor run reverse wouldnt be worth it.
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Old Jun 30, 2008 | 10:55 AM
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http://www.boatdesign.net/forums/showthread.php?t=9524
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Old Jun 30, 2008 | 12:51 PM
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Originally Posted by alamantia
probably for a boat
actualy there is easier wan than reverse rotation. he can use epicyclic gears as in auto gear or something like that
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Old Jun 30, 2008 | 01:09 PM
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if he is looking to bolt in a new engine who wants to get involved with expensive gear boxes and relocating the motor, id rather just try and find out of you can do a revers rotation, thats why they do them like that now.
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Old Jun 30, 2008 | 03:23 PM
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i think he just started the post to see what people would waste the time to respond
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Old Jun 30, 2008 | 03:26 PM
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Originally Posted by alamantia
Well if he had a freshwater boat, or a salt water boat with a heat exchanger and wanted to repower it with a pair of LS1's one engine would have to run backwards.
can't you just change the angles of the props?
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Old Jun 30, 2008 | 04:18 PM
  #27  
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Wow, a lot of replys. And for some reason I wasn't getting notification of them.

This would be for a rear engine Corvair. The stock Corvair 6 cylinder spins in reverse rotation so to swap in an LS1 it would need to be reverse rotation as well.

The other option is to use a Porsche transaxle that allows you to run forward rotation.

Just seeing which would be cheaper and easier.
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Old Jun 30, 2008 | 05:08 PM
  #28  
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Originally Posted by 70 LS1
Wow, a lot of replys. And for some reason I wasn't getting notification of them.

This would be for a rear engine Corvair. The stock Corvair 6 cylinder spins in reverse rotation so to swap in an LS1 it would need to be reverse rotation as well.

The other option is to use a Porsche transaxle that allows you to run forward rotation.

Just seeing which would be cheaper and easier.
You are looking at the cheapest and the easiest way to do it.
Here is a Corvair with a LS series engine in it...do it this way and you do not have to phuch around with all this reverse rotation BS.... ... You know that this car will haul azzzz it weighs nothing.





I saw this car on the Hot Rod Power Tour in Evansville, Indiana in 2007..it was kind of a sleeper for sure.......

Last edited by slt200mph; Jul 3, 2008 at 11:01 AM.
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Old Jun 30, 2008 | 07:33 PM
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Originally Posted by hlaalu
can't you just change the angles of the props?
And have one push water and one pull water?
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Old Jun 30, 2008 | 09:29 PM
  #30  
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He's probably looking into something like this?


http://caravelleboat.com/forum/viewtopic.php?t=2541
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Old Jun 30, 2008 | 09:34 PM
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Originally Posted by slt200mph
Here is a Corvair with a LS series engine in it...do it this way and you do not have to phuch around with all this reverse rotation BS.... ... You know that this car will haul azzzz it weighs nothing.
heh. I read about some guy who dropped a regal chassis under one of those and stuffed in a 455, imagine with the G-body suspension parts and a well built LS1!
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Old Jun 30, 2008 | 09:44 PM
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Ok the corvair is a mid engine car, sounds like you want to keep it that way. And you sure its not a reverse rotation cam? My 250/292 inline 6 is that way. Its been along while since I seen a corvair set up and it was a bit different like how the accesery drive is. P.S dont let Ralph Nader know. He thinks these cars are unsafe at any speed.
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Old Jun 30, 2008 | 11:48 PM
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Originally Posted by tillery
Ok the corvair is a mid engine car, sounds like you want to keep it that way. And you sure its not a reverse rotation cam? My 250/292 inline 6 is that way. Its been along while since I seen a corvair set up and it was a bit different like how the accesery drive is. P.S dont let Ralph Nader know. He thinks these cars are unsafe at any speed.
The corvair is rear engine, not mid. And it uses an air cooled horizontally opposed 6 not an inline 6.
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Old Jul 1, 2008 | 12:33 AM
  #34  
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Originally Posted by alamantia
And have one push water and one pull water?
no the blades would still be pushing the water away from the boat... hmm how can i explain what i mean

alright so lets say you have this prop. looking at it, it would have to spin clockwise to push water and propel the boat.


so if you have the engine turning counter clockwise, do they make props that have opposite angles like this one i just mirrored in photoshop.



hopefully my thoughts are making sense?
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Old Jul 1, 2008 | 05:28 AM
  #35  
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Originally Posted by hlaalu
no the blades would still be pushing the water away from the boat... hmm how can i explain what i mean

alright so lets say you have this prop. looking at it, it would have to spin clockwise to push water and propel the boat.


so if you have the engine turning counter clockwise, do they make props that have opposite angles like this one i just mirrored in photoshop.



hopefully my thoughts are making sense?
yes, thats what has to happen if you have two engines spinning io opposite directions, i thought you meant have both engines spinning the same direction and having opposite pitch blades. You are corrct.
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Old Jul 3, 2008 | 01:19 AM
  #36  
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Originally Posted by 70 LS1
Other than cam, what would it take to make an LS1 reverse rotation?
Install the crank reluctor reversed, re wire ignition coils, revise crank oil passages and use an external oil pump. Also check cam sensor signal to crank signal timing, this can be done on the cam (LS1) or timing chain (LS2), pin dampener.
I can't picture an LSX in the rear of a Corvair though.

Julio
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Old Jul 3, 2008 | 01:28 AM
  #37  
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Originally Posted by 70 LS1
The corvair is rear engine, not mid. And it uses an air cooled horizontally opposed 6 not an inline 6.

Wasn't there a turbo on it as well?

Good Corvair info here
http://www.corvaircorsa.com/vance.html
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Old Jul 3, 2008 | 10:59 AM
  #38  
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Way too much work to do reverse rotation and a transaxle...and on top of that trying to get the power reliably to the wheels is going to be major pain...if he puts it in the front and runs a traditional drive train would be much easier and less expensive and more reliable too...the car should be stupid fast with that kind of power to weight ratio....if he puts the motor in the rear he can get a side job doing 1/4 wheel stands on the weekends.

Last edited by slt200mph; Jul 3, 2008 at 04:35 PM.
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Old Jul 3, 2008 | 02:00 PM
  #39  
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At the Edelbrock facility in Torrance, CA they have a speed boat powered by a small block Chevy. The prop and shaft were mounted to the front of the crank and the engine was mounted backwards. Just throwing it out there.
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Old Jul 3, 2008 | 04:00 PM
  #40  
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Wait a minute, IF you took all the time to get an LS1 to run backwards for a boat setup wouldn't the boat still pull to one side since one engine is making 350hp and the other is making over 900hp????
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