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Old 06-07-2012, 05:23 PM   #21
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That is a legit concern. The PS pump might even loose prime... now that I think about it, I don't even know what kind of pump it is.
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Old 06-07-2012, 08:14 PM   #22
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So just make sure it's a positive displacement pump? Doesn't that solve the problem?
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Old 06-08-2012, 01:12 AM   #23
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Quote:
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So just make sure it's a positive displacement pump? Doesn't that solve the problem?

what exactingly do you mean by positive displacement pump. right now this is more a exercise in theory then being hell bent on execution. the guy who posted this idea first my have more input but I think it could work. I found a random truck posts that guys were talking about converting their trans cooler to a power steering cooler. kinda funny.

I'm not interested in a electric pump right now.by the time I buy all the ---- to it right with a real core lines bracket fab for pump placement it is money. and for what? Ive not seen any real numbers on trans temp. first step at some point will be to add a gauge and see what temps I'm seeing if they are stupid high, it would be awesome to just get some fittings and basicllly reroute the lines to the ps pump.

or get really crazy and run a larger core and keep PS in place. I wonder if PS could run trans fluid. I don't think this is the case. I think we might have an issue with the pump pressure output. I wonder what pressure is achieved at the pump on the pressure side.does the pump achieve any mechanical advantage for the rack via the pressure, like hydraulics? if this is the case, it will not easily work and likely reason no one has seen it done before. I bet the pump could be modified if needed to generate less pressure but that starts getting into more work than its worth to save on the cost of a pump built for this purpose.
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Old 06-08-2012, 01:20 AM   #24
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Quote:
Originally Posted by fooger03 View Post
So just make sure it's a positive displacement pump? Doesn't that solve the problem?

what exactingly do you mean by positive displacement pump. right now this is more a exercise in theory then being hell bent on execution. the guy who posted this idea first my have more input but I think it could work. I found a random truck posts that guys were talking about converting their trans cooler to a power steering cooler. kinda funny.

I'm not interested in a electric pump right now.by the time I buy all the ---- to it right with a real core lines bracket fab for pump placement it is money. and for what? Ive not seen any real numbers on trans temp. first step at some point will be to add a gauge and see what temps I'm seeing if they are stupid high, it would be awesome to just get some fittings and basicllly reroute the lines to the ps pump.

or get really crazy and run a larger core and keep PS in place. I wonder if PS could run trans fluid. I don't think this is the case. I think we might have an issue with the pump pressure output. I wonder what pressure is achieved at the pump on the pressure side.does the pump achieve any mechanical advantage for the rack via the pressure, like hydraulics? if this is the case, it will not easily work and likely reason no one has seen it done before. I bet the pump could be modified if needed to generate less pressure but that starts getting into more work than its worth to save on the cost of a pump built for this purpose.
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Old 06-08-2012, 06:55 AM   #25
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Using the power steering pump as the trans cooler pump is a terrible idea.
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Old 06-08-2012, 09:00 AM   #26
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Quote:
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Using the power steering pump as the trans cooler pump is a terrible idea.
Why?
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Old 06-08-2012, 12:04 PM   #27
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-Not thermostatically controlled
-Placement implies that you would need to place ANOTHER fluid cooler at the front of the car, further complicating things
-Line routing to the transmission practically requires that you have two high-pressure -10AN lines full of oil routed directly next to the downpipe
-Designed to produce pressure, not flow fluid
-Not designed for transmission fluid
-Not self-priming and sits above the level of the transmission fluid
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Old 06-08-2012, 12:09 PM   #28
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I think because the PS pump would try to pressurize the trans and push fluid out of every seal. the ps pump is designed to create pressure differential and convert pressure into mechanical energy and assist with steering effort. the pump would need to modified at a minimum.
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Old 06-08-2012, 12:17 PM   #29
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Quote:
Originally Posted by Savington View Post
-Not thermostatically controlled
-Placement implies that you would need to place ANOTHER fluid cooler at the front of the car, further complicating things
-Line routing to the transmission practically requires that you have two high-pressure -10AN lines full of oil routed directly next to the downpipe

-Designed to produce pressure, not flow fluid
-Not designed for transmission fluid
-Not self-priming and sits above the level of the transmission fluid
The rest I agree with. But the pump nor the cooler have to be mounted at the front of the vehicle.
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Old 06-08-2012, 01:15 PM   #30
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Quote:
Originally Posted by psreynol View Post
I think because the PS pump would try to pressurize the trans and push fluid out of every seal. the ps pump is designed to create pressure differential and convert pressure into mechanical energy and assist with steering effort. the pump would need to modified at a minimum.
1. Such a pump would alter the internal pressure of the transmission by a net factor of zero.

2. As you can see from the picture below, no one has ever thought of the possibility that the heating/cooling of the transmission might change the volume of the fluids inside.

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how would you run trans cooler lines?-image004.jpg  
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Old 06-09-2012, 01:10 AM   #31
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you could probaboly just use heat sink bond and glue aluminum heat sinks to the case to bleed off heat.

heat shield between the exhaust and trans

trying to pump gear oil is going to be cost reductive.
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Old 06-09-2012, 05:38 PM   #32
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Heat shield between the exhaust and trans could definitely help (or simply some exhaust wrap).

I'm not sure about gluing on heat sinks. It might help some, but it would take a lot of work, not be all that cheap (that heat sink glue is expensive), not be very durable, and reduce the already tight clearances around the tranny, making it harder to work on.
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Old 06-10-2012, 06:34 AM   #33
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Gluing heat sinks to the trans is like pissing on a forest fire.

You can get quality 12v pumps that are specifically designed to move gear lubes for under $200. At that price, modifying the PS pump to do the same thing just isn't intelligent IMO.
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Old 06-10-2012, 06:36 AM   #34
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Quote:
Originally Posted by RyanRaduechel View Post
The rest I agree with. But the pump nor the cooler have to be mounted at the front of the vehicle.
Unless you're running a 13ft-long -10AN line full of tranny fluid from the pump at the front to the cooler in the back, or relocating the factory PS pump to the rear of the car and driving it off the driveshaft, you kind of do have to have the pump and cooler located at the front.
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Old 06-10-2012, 02:54 PM   #35
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That is the setup I am working on at the moment, the pump is mounted to the front of the pumpkin and ran off a toothed pulley on the pump as well as one sandwiched between the driveshaft and the flange for the rear differential. The cooler is mounted under the trunk with a Spal fan and will be ducted. The only thing I havent decided yet is if I want to use that one to cool the rear diff or if I want to use it for the transmission. Originally I had planned on using a power steering pump, but then I picked up a Barnes 7005 rear end pump for cheap and that is what I have been building around. Over kill? Maybe, but badass. Will post pics when its done.
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Old 06-10-2012, 11:18 PM   #36
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just saw a set up on a sick e46 race car and with bottom drain and they used a an fitting with a bango bolt with requires minimal clearance
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