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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #26  
Old 03-03-2012, 07:57 PM
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ZeGerman ZeGerman is online now
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You're misunderstanding things a little bit. Keeping the chassis from flexing keeps the suspension geometry where it should be under heavy load. In other words, you have to keep the chassis static to allow the suspension geometry to remain correct under heavy load.
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  #27  
Old 03-03-2012, 08:07 PM
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Archetype Archetype is offline
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Quote:
Originally Posted by ZeGerman View Post
You're misunderstanding things a little bit. Keeping the chassis from flexing keeps the suspension geometry where it should be under heavy load. In other words, you have to keep the chassis static to allow the suspension geometry to remain correct under heavy load.
So bracing and spanning the rsm's themselves does not ensure suspension geometry, but bracing the chassis from twisting will? That is counter intuitive in my mind, but if you say so. You usually know what you are talking about and I ve used your advice in the past. So no disrespect intended, but I still dont agree completely.
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  #28  
Old 03-03-2012, 08:14 PM
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Originally Posted by Archetype View Post
So bracing and spanning the rsm's themselves does not ensure suspension geometry, but bracing the chassis from twisting will?
No, bracing the RSMs themselves will keep the suspension geometry in line, but you can accomplish this two ways. You can either use a shock tower bar that mounts to the top of the shock towers, or you can mount to the sides of the shock towers. The suspension geometry will be equally braced this way. The only disadvantage of mounting to the sides of the shock towers is that you will then also have to run reinforcement plates on the top of the shock towers (not a big deal) to prevent break-through. But like I said, suspension geometry will be maintained either way.
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1998 BMW 328is
1966 Pontiac GTO
2007 Subaru Impreza 2.5i 5-door
View my photos: Caught in the Wild
For sale: E30/E36 front sway links
For sale: OEM E36 328 catback

Last edited by ZeGerman; 03-03-2012 at 08:17 PM.
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  #29  
Old 03-03-2012, 08:30 PM
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Archetype Archetype is offline
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'Alrightythen' in my mind, most of the play and flexion comes from the rsms rocking and rolling around in the mounts, not the towers themselves. I am all for chassis rigidity, as I have an x brace and plan on doing a B pillar bar as well.

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Last edited by Archetype; 03-03-2012 at 08:32 PM.
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  #30  
Old 03-03-2012, 09:59 PM
kaos_325i kaos_325i is offline
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I agree that unless you are really driving these cars like a true race car, is there a need for any additional bracing. Don't know about anyone else but new stiffer bushings all around would be more than enough for what I do.

But to address the topic of this thread, making this bar tie in to some strut mount reinforcement plates would have killed more birds with one stone. but this bar will still do what he intended if he ever finds himself in a situation to need it
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  #31  
Old 03-04-2012, 06:44 AM
TX S3 TX S3 is offline
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looks very sturdy.
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  #32  
Old 03-04-2012, 09:46 AM
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rooster1986 rooster1986 is offline
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Kaptinkp, your a dick. Now, some of you are thinking to far into this. I didnt pay for anything involved in making it. It was a free day in my welding class and wanted to try it. I allready have the turner reinforcement plates and rogue engineering rtabs. So its not the greatest design but it also was free to make and gave me some practice welding.

It may not help till pushed to the edge but how many of you have put upgrades on your car that wont come into play on a everyday basis? No matter what, my car, my driving and my time.

Those of you who like it thank you. Those of you who want to give me crap, come and jump on a welder with scrap and show me up.

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