Edges of fan are torn up and radiator not looking to good.

Discussion in 'E9 General Discussion' started by gdub0717, May 10, 2019.

  1. gdub0717

    gdub0717 Active Member

    Messages:
    264
    Likes Received:
    29
    Trophy Points:
    28
    Location:
    Portland, Or
    Help!
    Looks like under torque somehow the fan is hitting along the bottom of the radiator.
    Tore out the center metal strip that runs down the center of the radiator.
    First thought was the motor mounts are torn or compromised. But they look OK.
    Rev'd motor and saw no engine movement.
    Has anyone experienced this phenomenon? Root Cause?
    No leaks at the moment. Fan and radiator will need to be replaced eventually.
    Could it be something in the fan clutch or water pump that is moving under torque or freeway speed?
    Any guidance would be much appreciated.-G
     
  2. Belgiumbarry

    Belgiumbarry Well-Known Member

    Messages:
    939
    Likes Received:
    447
    Trophy Points:
    63
    Location:
    Belgium
    perhaps the angle engine/gearbox isn't correct anymore ? did you inspect the gearbox support ?
     
  3. Gransin

    Gransin Well-Known Member Site Donor

    Messages:
    975
    Likes Received:
    468
    Trophy Points:
    63
    Location:
    Vasa, Finland
    I'd suspect engine/trans mounts aswell. If it's been okay before and now all of a sudden started to hit the radiator, it's either the engine/trans package that's moving too much, or the radiator.
    You wont really see the condition of the engine mounts until you take them out, is my experience.
     
  4. Stevehose

    Stevehose Well-Known Member Site Donor $

    View My Showcase
    Messages:
    8,832
    Likes Received:
    1,208
    Trophy Points:
    113
    Location:
    New Orleans, LA
    yes inspect the tranny mount also. This will also affect your driveshaft/guibo/CSB alignment.
     
  5. JayWltrs

    JayWltrs Active Member Site Donor

    Messages:
    408
    Likes Received:
    159
    Trophy Points:
    43
    Location:
    Oklahoma City
    Aside from motor mounts, I can only suggest from my misadventures:
    --I had to shim my radiator mounts for skinnier AL radiator. So, you might be able to trim your rad mounts on the bow side and shim the aft side to get a few mm extra clearance.
    --Make sure the engine is sufficiently warm to engage the fan clutch--sounds like you did, but I somehow had a bit of a wobble after replacing mine. Not sure what I did, but I reassembled and it works fine.
    --The cheap ($180) AL radiator on Amazon (search forum for info) works great on mine and gives a little more room--although I'll eventually get the original re-cored because it looks better. No longer available on Amazon but probably on ebay.
     
  6. aearch

    aearch Well-Known Member Site Donor

    Messages:
    3,135
    Likes Received:
    236
    Trophy Points:
    63
    Location:
    pleasant hill , ca
    the fan becomes weak over time and flexes under torque
    see if you can flex the blade with your hand if so
    u need another
    had that happen on my 2002
     
    Last edited: May 10, 2019
  7. gdub0717

    gdub0717 Active Member

    Messages:
    264
    Likes Received:
    29
    Trophy Points:
    28
    Location:
    Portland, Or
    Thanks for the feedback.
    The issue just started without warning so something changed. Still not sure what. Transmission cross bar is in place with one mount. Is this common? Also the crossbar for transmission is not straight across. Sits at an angle but does not look like it has moved. I may be able to add a second mount but do not think the issue is here.
    I put a jack under near the front and applied some pressure to see if the engine would move and possibly show a compromised engine mount. No movement.
    Fan seems solid but at high rpm’s maybe there is movement. Still have to check it more closely.
    Here is a picture of the damage. You can see some of the damage to the radiator.
    Any other ideas? 482B0B0C-3361-4E40-8435-AF8880506106.jpeg
     
  8. gdub0717

    gdub0717 Active Member

    Messages:
    264
    Likes Received:
    29
    Trophy Points:
    28
    Location:
    Portland, Or
    3AD97050-8014-46C1-8258-847FC980622B.jpeg 989DF3A2-1057-402F-AAAE-0273AB4F433F.jpeg 5E9CE7E3-9C79-4C00-8E75-35C770693037.jpeg D8BF6B45-EC68-48B1-B05C-3E7B4A5D378B.jpeg Here are pictures of the transmission and motor mounts. Does not look like anything has been compromised or there has been movement.
     
  9. HB Chris

    HB Chris Well-Known Member Site Donor $$

    View My Showcase
    Messages:
    10,891
    Likes Received:
    1,332
    Trophy Points:
    113
    Location:
    Huntington Beach, CA
    Trans mount is standard, no worries there. I think the old blade flexes.
     
  10. gdub0717

    gdub0717 Active Member

    Messages:
    264
    Likes Received:
    29
    Trophy Points:
    28
    Location:
    Portland, Or
    I have a 8 blade fan but did not want to install it only to find the issue is the fan. :oops:
    But, it is time to take the risk after some input from the experts!;)
     
  11. Cornishman

    Cornishman Active Member Site Donor

    Messages:
    373
    Likes Received:
    27
    Trophy Points:
    28
    Location:
    Essex, UK
    Could it be that something got into the fan, and it was that which got thrown around and damaged the fan and radiator?

    Last summer I hit a squirrel and got some funny noises for a while afterwards. I saw the squirrel in my rear view mirror so it came out, but perhaps it had a friend with it who stayed to party for a while.
     
  12. deQuincey

    deQuincey Well-Known Member

    View My Showcase
    Messages:
    5,848
    Likes Received:
    541
    Trophy Points:
    113
    Location:
    bilbao
    it might well be the angle of the photo, but to my eye, the motor mount on the right hand side, seems to have an angle not perpendicular to the engine support
    it seems to go frontwards
    as it can be seen in the radiator surface there is a circular trace so either the radiator is coming backwards (unlikely) or the powertrain is moving frontwards
    as i assume there is plenty of flexibility in the motor mounts and tranny mounts to go frontwards at least 5 to 10mm, what about the rest of the powertrain line back to the differential ?
    i assume there should be no play in the longitudinal direction from the differential and the cardan joint back there
    just my 2 cents
     
  13. gdub0717

    gdub0717 Active Member

    Messages:
    264
    Likes Received:
    29
    Trophy Points:
    28
    Location:
    Portland, Or
    At first I thought maybe I left a ratchet extension in the engine bay and it possibly caused the damage. But, it got slightly worse after inspection and further driving.
    Could be that possibly the P.O. did not drive it as hard as I do thus not causing the issue. Seems unlikely, but possible.
    The engine looks solid. And would say there is no movement. All hardware looks to be intact.
    At this point I have decided to do a fan/water pump replacement/upgrade. Use the original radiator and run the car for a bit. If it all looks good I will replace the radiator. I have seen a few ebay radiator recommendations but not sure if they are current.
    Any current recommendations?
    Thanks for the feedback. Will report back the final results incase other have the same type of issue in the future.
     
  14. Peter Coomaraswamy

    Peter Coomaraswamy Well-Known Member Site Donor $

    View My Showcase
    Messages:
    3,347
    Likes Received:
    486
    Trophy Points:
    83
    Location:
    Austin, TX
    Hi Gordon, I would suggest while you are in there to replace the motor mounts and the transmission mount. All are super easy and that will solve that potential problem. Also, I see that you have the "keepers" on the motor mounts; those should stop the engine from moving forward during sudden stops. I think you may have solved your on puzzle by replacing the water pump, there may be some movement in the shaft although that is often (but not always) accompanied by leaking green juice. Then, when it stops hitting the current radiator you can buy a new aluminum one and life will be awesome!! All these items will make for more peace of mind while driving.
     
  15. Ohmess

    Ohmess I wanna DRIVE! Site Donor

    Messages:
    2,510
    Likes Received:
    447
    Trophy Points:
    83
    Location:
    Vienna, VA
    I too am seeing some deflection in the right side motor mount, and the surface of that mount along with the rust on the bolt makes it appear older than the other one. I would guess someone previously changed the left mount, but not the right. If it were my car, I would change them both.

    I had a problem with my radiator moving within the brackets, but this was with a replacement aluminum radiator that was thinner that the stock unit. Does your radiator fit snuggly within the brackets on either side?
     
  16. JayWltrs

    JayWltrs Active Member Site Donor

    Messages:
    408
    Likes Received:
    159
    Trophy Points:
    43
    Location:
    Oklahoma City
    Weird. I don't know if they got hit by tariffs or I screwed up the searching, but last year there seemed to millions of them on ebay and Amazon, and I don't see them anymore. They all looked like this one from Ireland's http://www.iemotorsport.com/bmw/item/e9alurad.html but about $200 cheaper.
     
  17. gdub0717

    gdub0717 Active Member

    Messages:
    264
    Likes Received:
    29
    Trophy Points:
    28
    Location:
    Portland, Or
  18. Stevehose

    Stevehose Well-Known Member Site Donor $

    View My Showcase
    Messages:
    8,832
    Likes Received:
    1,208
    Trophy Points:
    113
    Location:
    New Orleans, LA
  19. gdub0717

    gdub0717 Active Member

    Messages:
    264
    Likes Received:
    29
    Trophy Points:
    28
    Location:
    Portland, Or
    I just emailed the company attached to the ebay ad you sent. We will see what they come back with. The price looks good.
    I saw your radiator at some point. Painting it black was a good idea.
    Thanks for all the info and feedback.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice