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X3 F25 (2011 - current)
The latest X3 brings some added style and some new features to the BMW SUV family. Talk about the new F25 now!

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  #26  
Old 03-08-2014, 12:20 PM
RhoXS RhoXS is offline
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Thanks for your pictures. I am going to copy your good ideas.
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  #27  
Old 03-08-2014, 03:25 PM
bimmernut1 bimmernut1 is offline
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Quote:
Originally Posted by RhoXS View Post
Thanks for your pictures. I am going to copy your good ideas.
No problem. I think this is going to work. I took an extended drive at speed and noticed no change in engine temperature but I'll continue to watch.

The only things I would add are:

The two sided tape underneath the center seal is probably optional. It gave me just a little increase in height for a tighter fit.

Don't put the headlight seals too far forward. You want them recessed behind the edge of the hood and out of sight.

There is a slight rise or shelf on the back of the center strip. I used this very back portion to attach the additional seal; again to get a little higher elevation toward the hood for a tight fit.

The real test will be when I drive through heavy road spray. I'm not too anxious to test it because I just cleaned the X3 inside and out. I love carbon black when it's clean.
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  #28  
Old 03-08-2014, 04:19 PM
jeff_K jeff_K is offline
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Hi Bimmernut1. Your engine looks like new. Thank you for your pics and thoughts on the weather seal setup. I personally do not think the temp in the engine compartment will be affected to any great extent. The front grill is already large enough with a radiator to keep things "cool". Do share with us how the car performs in the coming weeks. These are the things I always appreciate in the forum.
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  #29  
Old 03-08-2014, 07:35 PM
Masterx5 Masterx5 is offline
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Bimmernut1. Thanks for the photos. when you are satisfied with your experiment, could you please retake the photos and show us. thanks again.
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  #30  
Old 03-09-2014, 04:28 PM
rmerkushen rmerkushen is offline
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Great info, I am also interested in how it holds up.. Got very frustrated with how salty my motor was after 2500 miles.
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  #31  
Old 03-09-2014, 05:55 PM
bimmernut1 bimmernut1 is offline
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follow up

Since others are thinking about this mod I'm posting observations I made today. When I opened the engine compartment today to check, I noticed that the backing tape had loosened slightly in one location. It remains in place but there's a chance I'll have to add a spot of superglue at some point in the future. This is not a deal breaker by any stretch but just an observation. Once the ambient temps rise it may permanently seal without any help.

Also, the 5/16" thickness I used is probably as thick as one should go with the seal. When I gently closed the hood and pulled out of the garage, I got a "hood open" warning even though it appeared to be closed. When I closed it by letting it drop from 5-6" like I do with my M5, no more alarm. This means I am getting a good tight seal across the front with the revision. Closing the hood firmly may permanently remove the warning, or it could be that a slight hood adjustment is in my future. I'll keep testing.
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  #32  
Old 03-09-2014, 06:55 PM
rmerkushen rmerkushen is offline
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Where did you buy 5/16 weather stripping? I looked under the hood and convinced this is the solution..

Thanks!!
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  #33  
Old 03-09-2014, 08:38 PM
bimmernut1 bimmernut1 is offline
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Originally Posted by rmerkushen View Post
Where did you buy 5/16 weather stripping? I looked under the hood and convinced this is the solution..

Thanks!!
I purchased the seal at Westlake Ace hardware. See post 25 in this thread. I show a photo of the product.
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  #34  
Old 03-10-2014, 03:54 PM
master2301 master2301 is offline
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Bimmernut1

Amazon also has the weatherstrip listed.
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  #35  
Old 03-11-2014, 04:43 PM
Masterx5 Masterx5 is offline
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I talked to my dealer advisor about this salt spray in my engine bay and he told me it is NORMAL and he has seen car with sprays. I told him it is SALT and it will eventually corrode and he told that is GUARANTEED to have not problem
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  #36  
Old 03-11-2014, 05:03 PM
flavius99 flavius99 is offline
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What else could he be saying?
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  #37  
Old 03-11-2014, 05:31 PM
Masterx5 Masterx5 is offline
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Originally Posted by flavius99 View Post
What else could he be saying?
Not use the word "Guaranteed".....
SA is a nice guy and very responsive....just wondering why he did say what he said. I will still call around few other dealers on this topic and try get in touch with a service manager
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  #38  
Old 03-12-2014, 05:51 PM
bimmernut1 bimmernut1 is offline
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Originally Posted by Masterx5 View Post
Not use the word "Guaranteed".....
SA is a nice guy and very responsive....just wondering why he did say what he said. I will still call around few other dealers on this topic and try get in touch with a service manager
It's probably a waste of your time to contact other dealers, since admitting there is a problem means admitting they need to resolve it. I'm afraid to BMW "guaranteed not to have a problem" means for 4years/50k miles. Warm salt water has always had the same result on metal to my knowledge. So unless BMW uses Unobtanium for its metal parts they will be susceptible to corrosion as well.

Their statement about this being normal is partly true. It is not only a normal result, but an expected one as well when the seals used in the current design don't fit tightly and don't cover the entire front end leaving large gaps for dirty water and salt to enter. This is exactly the result I expect but it's not the design I expect from BMW.

Below is a photo of my "new normal". The photo was taken after a jaunt in driving road spray. We had a big thunderstorm last night so I rushed out to the freeway and got behind the spray of every tractor trailer rig I could find. (I think we're done with snow) The car got covered with dirt, water, and salt dust left on the road. I checked the end result today. The engine compartment remained totally clean. Next test is tonight when I take it to the car wash. I'll use the wand directly on the front and see how much water gets in under pressure; just as I did to test the BMW seals.
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Last edited by bimmernut1; 03-12-2014 at 05:54 PM.
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  #39  
Old 03-12-2014, 06:38 PM
Masterx5 Masterx5 is offline
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Bimmernut1, Thanks for this excellent fix. I am ordering it tonight that seal from amazon as I think it would be difficult to find in stores around. Not sure if Home depot would have it.
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  #40  
Old 03-12-2014, 07:42 PM
bimmernut1 bimmernut1 is offline
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Originally Posted by Masterx5 View Post
Bimmernut1, Thanks for this excellent fix. I am ordering it tonight that seal from amazon as I think it would be difficult to find in stores around. Not sure if Home depot would have it.
Glad to help. I did end up having to put a spot of superglue under the seals in two locations. It's now secure. I used as little glue as possible just in case I have to reverse the installation because there's some technical issue with the install that arises. However, I've noticed no change in the engine temperature so I'm going to stop worrying about that.

My test at the car wash was inconclusive because I can't tell if the water I saw in the engine compartment did or didn't come from the side of the engine where I have no seals. I think that's how it got in. Regardless I'm certain the compartment will remain cleaner longer from road spray. Besides, road spray is not at 2000 psi like a car wash wand. I plan to detail the engine this weekend then the real test will be several weeks of driving in real world applications. I'm sure it won't snow anymore this season since I'm taking the snow tires off the M5 tonight.
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Last edited by bimmernut1; 03-13-2014 at 05:40 AM.
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  #41  
Old 03-12-2014, 10:12 PM
newc6 newc6 is offline
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This is a GREAT DIY. If I do buy a new X3, this is the first "mod" I will do. Thank you.
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  #42  
Old 03-13-2014, 03:39 AM
RhoXS RhoXS is offline
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Quote:
Originally Posted by bimmernut1 View Post
... I've noticed no change in the engine compartment temperature ...
I am curious, how did you monitor engine compartment temperature and where in the engine compartment did you position the sensor?
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  #43  
Old 03-13-2014, 04:25 AM
jeff_K jeff_K is offline
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Hi Bimmernut1.
Wow! Just like your previous pic...clean like new! No snow here, hence no issues with salt water spraying onto my car. Don't see the necessity to install the seals. Have not experience a wet engine compartment after a car wash. My engine compartment has patches of black dust here and there but mostly on the underside of the hood and around the latch. That can be wiped off. But I'll do an engine compartment wash one day.

Last edited by jeff_K; 03-13-2014 at 05:10 AM.
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  #44  
Old 03-13-2014, 05:41 AM
bimmernut1 bimmernut1 is offline
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Quote:
Originally Posted by RhoXS View Post
I am curious, how did you monitor engine compartment temperature and where in the engine compartment did you position the sensor?
That's a good question. I meant engine temperature; purely based on temperature gauge on the dash. I went back and edited that statement. Thanks.
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  #45  
Old 03-13-2014, 06:17 AM
RhoXS RhoXS is offline
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Just an observation.

Two weeks ago, just prior to taking my car to the dealer for service, I did a quick pressure cleaning of the engine compartment to remove the large amount of salt and dirt deposited on all surfaces. Surprisingly, the engine compartment cleaned up really nicely without any need to wipe anything down, all the crap just rinsed off with the water spray. The point here is that two weeks ago I started with a good baseline of a clean engine compartment.

A couple of days ago, just before this latest round of heavy snow, I checked the engine compartment to see where dirt was beginning to accumulate. I found spray starting to accumulate on the hood above the headlights. Based on this observation, it is my opinion that the spray intrusion above the headlights is the big hitter and stopping this path will significantly improve the problem but not eliminate it because, with time, other paths will start to become evident.

We just had a lot of snow over the last 24 hours. The temps are forecast to rise to about 40 tomorrow so it should be a sloppy wet mess out there. I will look again later in the week and see if anything else becomes apparent.

Last edited by RhoXS; 03-13-2014 at 06:18 AM.
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  #46  
Old 03-17-2014, 07:40 AM
dudley07726 dudley07726 is offline
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Looking under the hood with the hood closed, it seems like that is a big space above each of the headlights. I am going to place some weatherstripping there.
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  #47  
Old 03-17-2014, 09:58 AM
jeff_K jeff_K is offline
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Originally Posted by dudley07726 View Post
Looking under the hood with the hood closed, it seems like that is a big space above each of the headlights. I am going to place some weatherstripping there.
If there is no hurry, why don't you wait till we hear from Bimmernut1 and RhoXS. Both are experimenting on the weatherseal.
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  #48  
Old 03-17-2014, 12:37 PM
dudley07726 dudley07726 is offline
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Originally Posted by jeff_K View Post
If there is no hurry, why don't you wait till we hear from Bimmernut1 and RhoXS. Both are experimenting on the weatherseal.
i will. My spray is towards the sides of the hood. Which just so happens to closely resemble the areas above the lights which is where I see he put some weatherstripping. He installed in towards the front of the light. I was thinking of doing it towards the rear.

Last edited by dudley07726; 03-17-2014 at 12:39 PM.
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  #49  
Old 03-17-2014, 04:39 PM
bimmernut1 bimmernut1 is offline
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Originally Posted by dudley07726 View Post
i will. My spray is towards the sides of the hood. Which just so happens to closely resemble the areas above the lights which is where I see he put some weatherstripping. He installed in towards the front of the light. I was thinking of doing it towards the rear.
The surface near the front of the headlight is flat. The surface near the rear has imperfections and raised areas making the adhesive difficult to stick. I considered the rear first then moved it to the front. Either will keep it from reaching the engine compartment. The front catches it closer to the source. You may come to a different conclusion which is fine.

You are correct that the area near the side is the part that has no seal at all. See my initial post. The seal I installed goes all the way across the light so it reaches this area as well.
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  #50  
Old 03-17-2014, 04:42 PM
bimmernut1 bimmernut1 is offline
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Originally Posted by jeff_K View Post
If there is no hurry, why don't you wait till we hear from Bimmernut1 and RhoXS. Both are experimenting on the weatherseal.

Thanks. As you stated I was experimenting so no one else has to use glue and adhesive on their car unnecessarily. So far so good with the install. The engineer in me wants to drive through one last nasty scenario before I claim success.
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