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Old 11-28-2007, 10:00 AM
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Can an automatic trans operate tilted on it's side?

I mean would it work if it was tilted on it's side say 45 degrees? I would think as long as the filter and pickup are submersed in fluid, it would work. But I know there are loose balls in the valve body, do they operate on gravity or hydraulic pressure?

I know this is a crazy question, but I'm toying with a crazy idea.

Any input would be appreciated.

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Old 11-28-2007, 04:49 PM
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As long as there was a sump available to allow fluid pickup. Maybe even a dry-sump system? The rest is hydraulic pressure from a pump with either vacuum or electric inputs.
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Old 11-28-2007, 05:54 PM
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Quote:
Originally Posted by KULTULZ
As long as there was a sump available to allow fluid pickup. Maybe even a dry-sump system? The rest is hydraulic pressure from a pump with either vacuum or electric inputs.
That may be true...but if the fluid gets up in the spinning parts it turns to a foam and will not build the proper hydraulic pressure.

Just overfill one and see what happens...same principal.
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Old 11-28-2007, 07:01 PM
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Quote:
Originally Posted by Brian_B
That may be true...but if the fluid gets up in the spinning parts it turns to a foam and will not build the proper hydraulic pressure.

Just overfill one and see what happens...same principal.
exactly, fluid is not compressable however air is when the fluid gets aerated it will not apply the clutches and an lead to failure so i would say that its not a good idea
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Old 11-28-2007, 07:15 PM
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Hmm, good points, I hadn't thought of that. Maybe a custom made pan might solve that problem. Have to think about this.
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Old 11-28-2007, 07:31 PM
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I think you guys missed what I said. As long as the sump (whether separate pan or case) is on the bottom of the assembly where fluid is allowed to drain to that area, the actual drivetrain position (it has to be in the same plane as the vehicle) has no bearing as long as the fluid is freely allowed to run back to the bottom of the assembly for recirculation.

Look at FWD ATX. Many will have the pan (now not a collection sump) at or near the top of the assembly and actual pickup sump at the bottom of the case.
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Old 11-28-2007, 08:01 PM
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So, barring any air entrainment problems, there are no ill effects of gravity? Those little balls don't need to be in a vertical position do they? (I've never have a valve body a part, so excuse my ignorance)

Are there typically discrete pickup and drain ports that can be plumbed to a sump? (say a TH-350 / 400)
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Old 11-28-2007, 08:06 PM
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I have had hundreds of them apart....truthfully...I never really thought about it.

I think they are check valves...allowing fluid to flow one way and not the other. Maybe somone else will know......

Hmm.....

As far as draining the fluid away and keeping it out of the moving parts...that might work.

I have never seen this asked anywhere before.

You planning on running an engine tilted too?

I have seen some 4X4 guys "clock" transfer cases.
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Old 11-28-2007, 08:09 PM
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I would think that if you made a custom pan so that the bottom of it is level you wold be alright.
Shane
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Old 11-28-2007, 09:29 PM
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What an interesting question! Personally I can't fathom why some one would want to mount a transmission at a 45 degree angle. This question also reminds me of a project car I built in 1971-1972. It was a BOSS 302 Ford, twin Turbo'ed, with small block Chevy connecting rods, and specially built pistons. I put that in a 1968 VW Bug on a Pantera Trans-axle. It built 560 HP, and did wheelie stands the whole 1/4 mile. A year later Ford, and their millions said in Popular Mechanics the max HP you could get out of a BOSS 302 was 650HP.

It cost me $22,000 to build, and I sold it @ Pomona Raceway 3 years later for $22,000 cash.

I was told numerous times it was a waste of money, and would'nt run.

Good Luck!
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Old 11-29-2007, 05:51 AM
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Don't worry, I do have a legitimate reason to ask, but I don't want to stray this thread into the why's.

All good points and I appreciate the input. Let me see if I understand the hydrulics here though.

There is a filter/pickup point in the pan. The fluid is sucked up by the pump, and supplies pressure to the converter / valve body / rotating gear assemlby. Then the fluid gravity drains back to the pan, much like in the engine. The only problem I can think of (as was mentioned) is if the fluid get trapped, it will sit and be thrashed by rotating parts and foam up (That is if there are no other components dependant on it sitting level due to gravity)
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Old 11-29-2007, 11:46 AM
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If you have ideas of a motor(or motors ) mounted at 45* angles, you might think about making a plate to rotate the trans back to level?? Assuming such craziness, you'll need some custom mounting solutions anyway...
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Old 11-29-2007, 02:29 PM
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tilted trans

I think it could be done, there are a few considerations, such as the vent, located at the top of the trans.

You would have to come up with a crazy looking pan and filter setup.

Operation is, fluid in the sump [pan], thru the filter to the pump, then to the pressure regulator valve, then on to the various circuts.

Is it a good idea to do this, I don't know of any major impasse that couldn't be overcome.

Just don't put it in upside down, it will have 3 reverses!
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Old 11-29-2007, 06:28 PM
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Quote:
Originally Posted by briscoe
Just don't put it in upside down, it will have 3 reverses!
If you put it upside down it would still turn the output shaft the same direction, right?

And Arrowhead...you must be REALLY up to no good this time.
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Old 11-29-2007, 06:32 PM
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If you turn it upside down (and it could actually work ) it would turn the same way.

Now a rear end...flip that upside down and you have to run the trans in reverse for the car to go forward. I think....
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