Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-22-2019, 09:42 AM
Member
 
Join Date: Dec 2017
Posts: 31
bandit4x4 is on a distinguished road
Transmission pan options...?

as some know the X5M ALUMINUM transmission pan (PN: 24117588752) fits all of the 6HP26Z transmissions, some aluminum fin modification may be necessary to clear the different cross members...


may discussions on the FB BMW diesel owners Group page... https://www.facebook.com/groups/NABD...9248727979656/


what is the temp change from running the Plastic to the Aluminum pan... ??

furthermore anyone ever added a trans cooler, beyond the small OEM version... ?

thanks
Reply With Quote

Sponsored Links

  #2  
Old 04-23-2019, 12:31 AM
Member
 
Join Date: Mar 2016
Location: PNW
Posts: 424
Entropy is on a distinguished road
Are you towing? If not, it all sounds like a waste of money. The factory cooler is more than adequate.
__________________
2007 E70 4.8i
Reply With Quote
  #3  
Old 04-23-2019, 03:41 PM
Member
 
Join Date: Dec 2017
Posts: 31
bandit4x4 is on a distinguished road
Quote:
Originally Posted by Entropy View Post
Are you towing? If not, it all sounds like a waste of money. The factory cooler is more than adequate.


Yes.. I tow...

The oem “cooler” is an odd setup ...it is a heat exchanger with the radiator which runs nearly 100C and the trans is happier down around 60C

Very odd


Sent from my iPhone using Tapatalk
Reply With Quote
  #4  
Old 04-23-2019, 04:28 PM
Member
 
Join Date: Aug 2016
Location: Brooklyn, NYC, NY
Posts: 365
robnitro is on a distinguished road
How do you know where the trans is happier?
100C is optimal as moisture buildup due to condensation boils out.
Also many additives in oils only work at higher temperatures.
Reply With Quote
  #5  
Old 04-23-2019, 05:28 PM
Member
 
Join Date: Dec 2017
Posts: 31
bandit4x4 is on a distinguished road
Quote:
Originally Posted by robnitro View Post
How do you know where the trans is happier?
100C is optimal as moisture buildup due to condensation boils out.
Also many additives in oils only work at higher temperatures.



Appreciate your question...

http://www.txchange.com/heatchrt.jpg

,,,, For transmissions cooler is always better

Also closed system so there should not be any moisture (H2O) in oil, if there is water it a transmission the boiling water at 100C is gonna reek havoc on solenoid seals and clutch packs

I am very courteous for feedback from the E70 X5d community, as the M57 is a torque monster... if I keep this vehicle, DPF/SCR deletes with 2.5 tune are on my horizon, and I don’t want to be smoke checking the transmission


Sent from my iPhone using Tapatalk
Reply With Quote
  #6  
Old 04-23-2019, 08:23 PM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,732
ard is on a distinguished road
I'd do a cooler.


The heat exchanger is a decent way to get the trans UP to temp as well. By tying the temp to the engine/oil system, it is easier to manage- engineering wise



Id also monitor your trans temps and EGT.


100% agree that temps kill trans. DOesnt take much to overheat, damage seals...then death begins. Not sure about that chart tho...
Reply With Quote
  #7  
Old 04-23-2019, 11:47 PM
josiahg52's Avatar
Member
 
Join Date: Dec 2014
Location: New England
Posts: 837
josiahg52 is on a distinguished road
Yeah, that chart seems to have an agenda.

Personally, I don't think an additional cooler is necessary. Air moving across the radiator and the engine coolant thermostat working with the transmission fluid thermostat works pretty well to keep temperatures in check.

You tow. Maybe you need a separate cooler. What temperature does your transmission fluid run at when your towing?
__________________
8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim
Reply With Quote
  #8  
Old 04-24-2019, 05:56 AM
Member
 
Join Date: Aug 2016
Location: Brooklyn, NYC, NY
Posts: 365
robnitro is on a distinguished road
Quote:
Originally Posted by ard View Post
I'd do a cooler.


The heat exchanger is a decent way to get the trans UP to temp as well. By tying the temp to the engine/oil system, it is easier to manage- engineering wise

...
No, there's a thermostat on the transmission cooler that only opens when the temps get hot.
Reply With Quote
  #9  
Old 04-24-2019, 10:24 AM
ard ard is offline
Member
 
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,732
ard is on a distinguished road
Quote:
Originally Posted by robnitro View Post
No, there's a thermostat on the transmission cooler that only opens when the temps get hot.
Huh. Thx. Didn't realize that on the 50. Don't think that's the case on the D, but not sure.
Reply With Quote
  #10  
Old 04-25-2019, 05:59 AM
Member
 
Join Date: Aug 2016
Location: Brooklyn, NYC, NY
Posts: 365
robnitro is on a distinguished road
Quote:
Originally Posted by ard View Post
Huh. Thx. Didn't realize that on the 50. Don't think that's the case on the D, but not sure.
Oh I was talking about the D.
RealOEM.com - Online BMW Parts Catalog number 4.

I changed mine a while back. The coolant loop has the thermostat. It was closed at room temp.
The trans fluid flows through that thermostat which opens the coolant flow when hot.
https://dyw03owr7vs3n.cloudfront.net...lh.?1496492368
https://dyw03owr7vs3n.cloudfront.net...k4.?1555697633

Last edited by robnitro; 04-25-2019 at 07:54 AM.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 02:18 AM.
vBulletin, Copyright 2024, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
© 2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.