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Old 03-23-2006, 08:17 PM   #1
tpinoy1
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Who's right? BMW Certified Mechanic or DIY?

Hello,

First of all I want to say this is a Great site with some sick-ass rides. I had Bilstein sport struts and shocks, Bavauto lowering springs and camber kits installed on a 2001 330i.

When I took it to the Dealership (Inspection II) I asked them for a four wheel alignment. They said they could not do it because the front springs/coils were put on wrong.

I don't want to second guess a certified BMW mechanic, so why does the DYI on spring replacement show this: (which is how my springs sat on the perch)


Here is a pic of the correct placement of the passengers side front spring/strut from a stock BMW that was up on a rack that the Certified BMW mechanic showed to me.
He said this was a common mistake and always sees this when customers bring in aftermarket setups. (Notice where the end of the springs rests)


Any comments?

Last edited by tpinoy1; 03-23-2006 at 08:20 PM.
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Old 03-23-2006, 08:29 PM   #2
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very interesting
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Old 03-23-2006, 08:55 PM   #3
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you are saying the 2nd picture is the correct way??

...learn something new everyday..
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Old 03-23-2006, 09:11 PM   #4
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you are saying the 2nd picture is the correct way??

...learn something new everyday..
Yes, that's what he told me.

He also said that the way the bottom of the spring is seated on the perch may make the car unlevel.

Looking from the front of my car, the passengers side does sit lower by 1/4 inch after over a month after install
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Old 03-23-2006, 09:33 PM   #5
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this is only an issue on blisteins?

what about others?
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Old 03-23-2006, 09:48 PM   #6
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this is only an issue on blisteins?

what about others?
I don't know if he meant in general or if it was only for Bilsteins sports
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Old 03-23-2006, 09:55 PM   #7
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wow...........first photo only look just a little off, the second photo
I................never seen one like that and still called correct.
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Old 03-23-2006, 10:03 PM   #8
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Hello:

If the mechanic is saying the second picture (the smaller one) is the correct orientation of the spring, he is absolutely wrong.

The top picture with the progressive spring shows the correct orientation.

You tell this so-called BMW mechanic to put a brand new car up on the lift. You'll see the spring will be oriented as it is in the top picture.

I've attached two pictures of my car that I took earlier, and though they are not pictures of the exact portion of the strut that "will close this case", if you look closely I think they do show the spring's orientation is different than that in the second picture (the incorrect orientation).

At the risk of sounding full of myself, I am right on this matter. Please PM me if you have any questions.

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Old 03-23-2006, 10:31 PM   #9
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At least they have some alibi not to align your car. I have installed a Bilstein PSS9 coil suspension kit on my car but when I brought it over to the dealer for wheel alignment on which I've explained that I've installed an aftermarket suspension on them. They flat out refused to do an alignment due to the aftermarket suspension. They told me that they simply will not do alignment with aftermarket stuff. So I've just brought my car to an independent alignment shop.
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Old 03-23-2006, 10:42 PM   #10
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wow. interesting. we need the experts to chime in.
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Old 03-23-2006, 11:10 PM   #11
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i'm not an expert but everytime at I drop a vehicle, I followed the way it sat on the perch, and they all rest on the grove which pic #1 is, the second pic is way off. I think the mech just didn't want to do the work
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Old 03-23-2006, 11:32 PM   #12
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If the mechanic is saying the second picture (the smaller one) is the correct orientation of the spring, he is absolutely wrong.

The top picture with the progressive spring shows the correct orientation.

You tell this so-called BMW mechanic to put a brand new car up on the lift. You'll see the spring will be oriented as it is in the top picture.
In defense of the BMW mechanic, I'm sure he has seen many new cars on his lift (It is his job after all).

In the DYI picture I notice that the perch sits almost at a 90 degree angle to the strut, in your picture of your Koni shock setup the perch is clearly at an angle.

I would think the position of the spring will be different.

Quote:
At the risk of sounding full of myself, I am right on this matter.
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Old 03-23-2006, 11:45 PM   #13
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this is only an issue on blisteins?

what about others?
I know with the Bilstein sport you have to use the original perch that was on the original strut.

Maybe that's why he said it should look like the second pic.

By the way, the second pic is of a BMW that has not been modified and shows factory equipment
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Old 03-24-2006, 12:15 AM   #14
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I installed the springs and struts on my 2 month old car last year and the springs were perched from factory as it is shown in the 2nd picture. I put my new springs on the pad in the exact position.
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Old 03-24-2006, 12:18 AM   #15
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man, someone needs to PM //mechanic and get his expert opinion. They guy is extremely blunt and assertive but he is truely a subject matter expert (master mechanic).

Let me PM and hopefully he will reply and settle this issue once and for all.
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Old 03-24-2006, 12:32 AM   #16
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1st pic is right. Second pic is wrong. If your springs are setup exactly like the first pic, then you have a lazy or stupid "certified" mechanic. Take it to a confident and reputable independent shop. They'll do a better job, and they won't charge you too much!!!

I want to see a pic of your actual setup, not just a "representative" picture...

Thanks.
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Old 03-24-2006, 12:41 AM   #17
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That looks way off. HEre is my diy pics.



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Old 03-24-2006, 12:48 AM   #18
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i'm not an expert but everytime at I drop a vehicle, I followed the way it sat on the perch, and they all rest on the grove which pic #1 is, the second pic is way off. I think the mech just didn't want to do the work
The mechanic just didn't want to do the work?

Is that what you would tell your boss if he gave you an assignment?
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Old 03-24-2006, 01:31 AM   #19
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1st pic is incorrect. When using the factory lower perch the spring should NOT sit in the groove. The 2nd photo is correct for a factory perch. If your spring is installed as in photo#1 and you have factory strut housings then the mechanic is correct.

SLO town: your photos do not show factory spring perches but Koni's. These are different...

darkmanlfe: Your last photo also shows the correct spring orientation.

EDIT: See photo, if the spring ends at B then it will sit across an uneven surface at line C. The spring should ACTUALLY end at point A.
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Old 03-24-2006, 02:17 AM   #20
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1st pic is incorrect. When using the factory lower perch the spring should NOT sit in the groove. The 2nd photo is correct for a factory perch. If your spring is installed as in photo#1 and you have factory strut housings then the mechanic is correct.

SLO town: your photos do not show factory spring perches but Koni's. These are different...

darkmanlfe: Your last photo also shows the correct spring orientation.

EDIT: See photo, if the spring ends at B then it will sit across an uneven surface at line C. The spring should ACTUALLY end at point A.
Thanks for clearing this up for me.
I had a feeling it was due to me using the original factory perch.
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