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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Mon, Apr-03-2017, 06:34:43 PM   #21
Nate047
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Default Re: Rear roll cage

Yea I guess I was thinking more of a roll bar in my mind than a half cage with a proper rear section. That is definitely worth something more in the case of a crash. But don't you think for that much effort you may as well cage the full cabin? That part still doesn't make a lot of sense to me because you've taken the dive into "ruining" the car already, so why not ruin it fully Bottom line I think it's personal taste, and a certain amount of how "showy" you want the car to be vs "because racecar."
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Old Mon, Apr-03-2017, 07:59:09 PM   #22
nholmes
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Default Re: Rear roll cage

Quote:
Originally Posted by pbonsalb View Post
https://www.bimmerforums.com/forum/s...36-M3-Roll-Bar

He has made a lot of bars, but is far from Japan. You can also try Autopower and Kirk, but some of their models are 3 or 4 piece rather than fully welded and the bar you pictured is fully welded. They may have fully welded options as well. The rear X is also an option in bar design. And bolt in versus weld in is also an option in bar design.

Due to shipping costs for a fully welded bar, you might be best off having one made locally assuming there are shops there that do this work.

The paint is something you can DIY or have powdercoated.
He's shipping mine today, actually.








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Old Mon, Apr-03-2017, 09:06:22 PM   #23
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Default Re: Rear roll cage

I think the Mason Engineering rear strut bar that ties into the rear subframe looks interesting. You have to buy the upper bar and the lower part, so it is expensive -- about as much as a rear roll bar.
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Old Mon, Apr-03-2017, 09:55:00 PM   #24
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Default Re: Rear roll cage

Quote:
Originally Posted by Nate047 View Post
Yea I guess I was thinking more of a roll bar in my mind than a half cage with a proper rear section. That is definitely worth something more in the case of a crash. But don't you think for that much effort you may as well cage the full cabin? That part still doesn't make a lot of sense to me because you've taken the dive into "ruining" the car already, so why not ruin it fully Bottom line I think it's personal taste, and a certain amount of how "showy" you want the car to be vs "because racecar."
A full cage in my part of the country is a lot of money. My local race shop charges 4k for a very well built and designed cage. That's a lot of money. Since I'm rebuilding my car and have a lot to sort out, this year I'm throwing in a kirk for the events I plan on running while I shake down the car and am running easy. Once the car is running well, I'm putting the cage in next year. I'd rather have some safety this year than no safety. It also saves time with finding the fitment for the seat positions, etc...

This stuff all adds up!
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Old Mon, Apr-03-2017, 10:13:05 PM   #25
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Default Re: Rear roll cage

The only thing I don't like about the Kirk bolt in cage is that it bolts to the wheel well area. Wish there was a better way to tie into the rear frame rails or rear shock towers like a weld in cage usually does
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Old Thu, Apr-06-2017, 03:52:27 AM   #26
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Default Re: Rear roll cage

Can someone please PM me Ben's number? I sent him an email about a cage, but never heard back.
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Old Thu, Apr-06-2017, 03:45:34 PM   #27
nholmes
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Default Re: Rear roll cage

Sure dude
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Old Thu, Apr-06-2017, 05:39:36 PM   #28
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Default Re: Rear roll cage

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Originally Posted by Solaris99 View Post
I paid $1600 for a custom half-cage when my car was streetable. Only half because I will not drive around on the street with a full cage and no helmet. I care about the contents of my skull. Don't tell me this thing didn't firm up the rear half of the car. To me, $1600 was totally worth it to feel safe while harnessed into my car if it rolls.


Now that my car is full-time track, I could get the cage completed, but I don't know if I'm going to actually race with this. The car can be put back to streetable without too much effort at this point. Fully cage it and I can only sell it as a track car.
Damn, those welds are beautiful.
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Car history: E85 Z4 3.0i smg//Current: 98' E36 M3 evo
Current setup:Bilstein clubsport coilover// E46 M3 front Brembo 4P & M perf 2P rear //Recaro SPG, SR-2 bucket seats//Sparco 35cm steering wheel//17 inch 8J BBS RX204 front & 9J rear ATS//GruppeM intake system//LTW style rear spoiler//Hella headlights
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Old Thu, Apr-06-2017, 09:06:17 PM   #29
nholmes
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Default Re: Rear roll cage

Lots of good info and pics in here, too:

https://www.bimmerforums.com/forum/s...Roll-Bar/page3
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Old Thu, Apr-06-2017, 10:12:32 PM   #30
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Default Re: Rear roll cage

Quote:
Originally Posted by englishtom1596q View Post
The only thing I don't like about the Kirk bolt in cage is that it bolts to the wheel well area. Wish there was a better way to tie into the rear frame rails or rear shock towers like a weld in cage usually does
What about something like this? The rear vertical support thing supports the rear seat/seat belts on the E46, so at least it has been tested for rigidity. However, I'm not sure how supportive it would be on the E36. The mounting points have also been reinforced with welded plates. Wheel wells? Fuk that.

IMO the one I have is a good bolt-in solution that isn't invasive (requires cutting, extensive modification to existing parts, etc). For a dedicated track car, welding a half cage at the minimum is the way to go, but since I plan on reverting my E46 back to stock in the future, bolt-in is my only option.











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Discussing Rear roll cage in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)