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The mkiv Supra Owners Club

Oil cooler - which way up?


Hermit

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I guess with an airlock it would just not be as effective as it could be, nothing immediately noticable (in my case anyway). :search:

 

BTW It's a B&M transmission cooler in case that makes any difference.

 

It came with some fitting instructions, they don't specify a preferred orientation for it, but they're very minimal instructions.

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inlet top and outlet at bottom

 

Not like this then?

 

http://www.bmtrans.ca/cooler.gif

 

With the amount of flow and pressure that goes through them an air lock is very unlikely, how many people have remote filters fitted upside down;)

 

What pressure is transmission fluid at anyway?

 

It's a plate and fin design like this one, so the oil could find it's way through without using all the pathways. :search:

 

http://www.bmracing.com/media/products/items/382_full.jpg

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Not like this then?

 

http://www.bmtrans.ca/cooler.gif

 

 

 

What pressure is transmission fluid at anyway?

 

It's a plate and fin design like this one, so the oil could find it's way through without using all the pathways. :search:

 

http://www.bmracing.com/media/products/items/382_full.jpg

 

to be honest fella i would not get bogged down to much with this, i run twin transmission coolers and the hoses are like spaghetti junction, the only reason i traced back to see which was feed and return was for mounting the stat for the cooling fan, i have no idea what goes where on the other cooler and it all runs fine

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Not like this then?

 

http://www.bmtrans.ca/cooler.gif

 

 

 

What pressure is transmission fluid at anyway?

 

It's a plate and fin design like this one, so the oil could find it's way through without using all the pathways. :search:

 

http://www.bmracing.com/media/products/items/382_full.jpg

 

 

 

Does help if you say whats going through it;) i have no idea on transmission fluid pressure, but i doubt its very low, but in any case i was referring to engine oil.

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Does help if you say whats going through it;) i have no idea on transmission fluid pressure, but i doubt its very low, but in any case i was referring to engine oil.

 

I did say :( True, not in the first post though.

 

to be honest fella i would not get bogged down to much with this, i run twin transmission coolers and the hoses are like spaghetti junction, the only reason i traced back to see which was feed and return was for mounting the stat for the cooling fan, i have no idea what goes where on the other cooler and it all runs fine

 

Not really bogged down, I've been doing other stuff on the car today, just about warmed myself up again now it was damn cold in the wind!

 

If it doesn't matter which way up it goes then that's fine by me :)

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  • 2 years later...

I have resurrected this old thread because;

 

I am fitting oil coolers for engine and transmission, and it is much easier to mount them with the hoses at the bottom, but concerned that the coolers will hold air.

 

With a permanent air pocket at the top, the cooler would only partially function, and oil pressure received would lag behind pressure delivered by the pump.

 

I have hunted the net for info yet found nothing other than this post.

 

Does anyone have definitive information?

Edited by David P (see edit history)
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There are coolers that are an

S

S

pipe with cooling fins,

 

and there are coolers that are

 

II======II

II======II

II======II

II...........II

 

2 in/outlets into a finned cavity.

 

With the continuous S pipe design, the air would be pushed straight through, but with the other form, mounted with the pipes at the bottom, I can't see how ther air could possibly be bled, just compressed into a smaller pocket at the top when under pressure.

 

Household central heating radiators are fitted in this way, and to remove the air lock, need bleeding from a valve at the top.

 

Unless the exit pipe extends inside the cooler to the top, how could an oil cooler be without the same physics?

Edited by David P (see edit history)
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