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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 11-15-2013, 04:38 AM
Legendvo Legendvo is offline
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Mein Auto: 2000 Z3 2.8
Major safety warning on z3 2.8

Z3 owners! I just discovered how bad frame quality of Z3 Roadster! The spot where Differencial is mounted is all thourn off! The welds that are holding crassmember that holds differencial mounts are really bad. I could see them coming off when lifted corpet in the trunk. My car never been in the accident, This is what Torqu and Big Tires Do!
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Last edited by Legendvo; 11-15-2013 at 07:14 AM.
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  #2  
Old 11-15-2013, 06:29 AM
wrench13 wrench13 is offline
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Mein Auto: Z3, 2.3
That is the #2 most known defect in BMW Z3 history, well documented in the stickys in this and other BMW Z3 forums. Suggest you spend a few hours reading. Once done, Seek out Randy Forbes , the recognized expert on this failure. He has a repair kit you gonna need to have installed. For everyone else: Proof that the problem does not only occur on the M Z3's. This one is a 2.8L.
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  #3  
Old 11-15-2013, 07:10 AM
Legendvo Legendvo is offline
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Mein Auto: 2000 Z3 2.8
don't wanna spend too much time reading and researching, just wanted to get the word out. I was surprised to see how bad that frame is I already fixed it by straightening it all and welding it back on, applyed many new and additional welds to the frame. And reenforced it with more steel. I know for sure it will hold all this load... And yes, this is only Stock 2.8 5sp auto, with 17/45/265 in the back... will be going to 225s

Last edited by Legendvo; 11-15-2013 at 07:15 AM.
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  #4  
Old 11-15-2013, 11:16 AM
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vintage42 vintage42 is offline
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Location: Louisville, KY
 
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Mein Auto: 1997 BMW Z3 1.9 5MT
Quote:
Originally Posted by Legendvo View Post
don't wanna spend too much time reading and researching, just wanted to get the word out... I already fixed it by straightening it all and welding it back on, applyed many new and additional welds to the frame. And reenforced it with more steel. I know for sure it will hold all this load...
The word has been out for more than a decade. The best fix is the kit by Randy Forbes, illustrated here:
http://www.bimmerfest.com/forums/sho...72&postcount=2
The installation is shown here:
http://www.spcarsplus.com/gallery3/index.php/SCC
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  #5  
Old 11-15-2013, 12:22 PM
wrench13 wrench13 is offline
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Vintage, that's too much reading for the OP !
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Y2K Z3, 2.3, w/66K, now 86K in 2 years

Astro 1990 w/290K

Y2K Celica, w/97K

Suck, Bang, Blow, that's what it's all about.
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  #6  
Old 11-16-2013, 11:34 AM
badvlvo badvlvo is offline
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Quote:
Originally Posted by wrench13 View Post
Vintage, that's too much reading for the OP !
Some people don't want to do any work themselves, relying on the internet to do all the work for them. I'm sure he fixed it as well as any of the available kits
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  #7  
Old 11-16-2013, 05:14 PM
Z3Papa Z3Papa is offline
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He must have climbed out from under a rock.
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  #8  
Old 11-16-2013, 07:40 PM
AB1945 AB1945 is online now
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Legendvo - this is old news but I'm sure you didn't know that. Can you post pics of your repairs please. That'd be a contribution to the board. Thanks.
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  #9  
Old 11-16-2013, 10:49 PM
Legendvo Legendvo is offline
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Sorry, i didn't take any pictures. But All i did is bent everything to it's original, and instead of factory spot weld, i stitch welded everything back on, and added 1/8 thick flat steel in the trunk for extra strength. And i changed rear tires from 265 to 225s, to reduce load, I'd rather spin them ...this is second Z3 that i bought. Not planning to keep it... just to flip it... 1999 Z3 2.8 had damage to front and rear, But didn't have this problem with frame.. tires where 225s all around..
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  #10  
Old 11-16-2013, 10:53 PM
Legendvo Legendvo is offline
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Quote:
Originally Posted by wrench13 View Post
Vintage, that's too much reading for the OP !
Thank you for the Links, i did a little simpler work, but it will work well for this car, since factory spot welds were able to hold it together for 126k miles... all my reinforcement will be better
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  #11  
Old 11-17-2013, 03:59 AM
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vintage42 vintage42 is offline
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Quote:
Originally Posted by Legendvo View Post
.... 1999 Z3 2.8 had damage to front and rear...
What is the intake on the driver side of the hood for? I have never seen that before.
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  #12  
Old 11-17-2013, 05:15 AM
Dheilman Dheilman is offline
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Mein Auto: 1998 Z3 Roadster 2.8 5spd
Quote:
Originally Posted by vintage42 View Post
What is the intake on the driver side of the hood for? I have never seen that before.
Also in the opening between the license and the fog light?
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  #13  
Old 11-17-2013, 07:09 AM
Kornknarr Kornknarr is offline
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A cold air intake? What happens when you get a bird in there?
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  #14  
Old 11-17-2013, 10:20 AM
Legendvo Legendvo is offline
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Mein Auto: 2000 Z3 2.8
Quote:
Originally Posted by Kornknarr View Post
A cold air intake? What happens when you get a bird in there?
HAHA Haven't had that problem Thats 3" tubing going up to Cold Air Intake... Engine air Intake Temp went down by 13 degrees..

Last edited by Legendvo; 11-17-2013 at 10:37 AM.
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  #15  
Old 11-20-2013, 01:03 PM
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vintage42 vintage42 is offline
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Quote:
Originally Posted by Legendvo View Post
... Thats 3" tubing going up to Cold Air Intake...
So the thing on top of the hood is not an intake. What is it?
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  #16  
Old 11-20-2013, 02:45 PM
redhotz redhotz is offline
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Quote:
Originally Posted by Dheilman View Post
Also in the opening between the license and the fog light?
Looks like a train horn
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  #17  
Old 12-04-2013, 07:25 PM
tohbi tohbi is offline
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Mein Auto: z3 '97 atlanta blue 2.8
sports cars should have frames, not unibody........ you put 225s on the rear?
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  #18  
Old 12-05-2013, 03:11 PM
Legendvo Legendvo is offline
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Location: Modesto
 
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Mein Auto: 2000 Z3 2.8
Quote:
Originally Posted by tohbi View Post
sports cars should have frames, not unibody........ you put 225s on the rear?
Yes, i have 225s in the back, i don't mind TCS flashing at me on every turn
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