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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > M Series > E46 M3 (2001-2006)

E46 M3 (2001-2006)

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  #1  
Old 08-27-2005, 12:06 AM
FlyingDutchMan FlyingDutchMan is offline
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Chassis Modfest Part 1 (SBAG Pics)

I finished up the last pieces of my chassi modfications. Having already installed a complete GC supension, brakes etc I had a few odds and ends to finish up.

Part 1
TurnerMotor Sport Rear Subframe mounting points weld reinforcment kit
Turner Motorsprot Rear Subframe Grand Am Cup Bushing Kit

Ground Control Rear Trailing arm spherical bushings
Ground Control Upper Inner control arm shperical bushings

There we four reasons for doing these mods. 1) Reinforced the rear subframe mounting point, there has been a BMW SA on this. Common prolbem in the E36 and E30 M3's also. 2) Reduces/eliminate any rear roll steer- or "skate board" steering under conrnering accel/decel loads. 3) Eliminate any toe chance from trailing arm bushing deflection under corner load. 4) Eliminate any chamber changes as a result of stock rubber upper inner control arm bushing deflection.

WIth all the specialty tools and air power and welders this project took two of us 8 hours start to finish.

The bottom line is that these mods make th car more predictable in its' handling and make it possible to put a more accurate alingment on the rear supension

Picture one is the removal of the rear end. Peter Van Wingerden at Santa Barbara Auto Group did all the work. (Home of Bimmerfest.)
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Last edited by FlyingDutchMan; 08-27-2005 at 12:25 AM.
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  #2  
Old 08-27-2005, 12:07 AM
FlyingDutchMan FlyingDutchMan is offline
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Picture of the stock Subframe Bushing Puller...BMW Specialty tool
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  #3  
Old 08-27-2005, 12:09 AM
FlyingDutchMan FlyingDutchMan is offline
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Stock Rear Subframe bushings...
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  #4  
Old 08-27-2005, 12:09 AM
FlyingDutchMan FlyingDutchMan is offline
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New Turner Motorsport Grand Am Cup semi solid delirn bushing kit installed...
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  #5  
Old 08-27-2005, 12:11 AM
FlyingDutchMan FlyingDutchMan is offline
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preping the subframe mounting points for the reinforcement plates...
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  #6  
Old 08-27-2005, 12:12 AM
FlyingDutchMan FlyingDutchMan is offline
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Rear Turner Motorsport mounting point plated in place ready to be welded in...weld thru primer
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  #7  
Old 08-27-2005, 12:12 AM
FlyingDutchMan FlyingDutchMan is offline
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Close up of the front mountinog point plate welded in..
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  #8  
Old 08-27-2005, 12:13 AM
FlyingDutchMan FlyingDutchMan is offline
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Big Picture view of all four mounting point plates welded in...
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  #9  
Old 08-27-2005, 12:15 AM
FlyingDutchMan FlyingDutchMan is offline
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No into the trunk where we had to weld the sheet metal on the backside of the rear subframe mounting points... First we had to cut through a layer of sheet metal that forms the trunks shape, to get to the metal that actuall supports the subframe mounting point.
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  #10  
Old 08-27-2005, 12:16 AM
FlyingDutchMan FlyingDutchMan is offline
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Close up of area to be welded, marked by red dots. This brings two layers of stock sheet metal together with the Turner Motorsport rear reinforcing plates welded on the undercarriage earlier...
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  #11  
Old 08-27-2005, 12:18 AM
FlyingDutchMan FlyingDutchMan is offline
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On to the Ground Control parts... rear traling arm bushings installed, we used the same installation tool picture on the rear subframe bushing to remove the stock bushings and press and bolt these ones in...
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  #12  
Old 08-27-2005, 12:19 AM
FlyingDutchMan FlyingDutchMan is offline
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Detail Picture of the Ground Control upper inner control arm bushing...
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  #13  
Old 08-27-2005, 12:20 AM
FlyingDutchMan FlyingDutchMan is offline
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Upper arm ready for reintall...
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  #14  
Old 08-27-2005, 12:24 AM
FlyingDutchMan FlyingDutchMan is offline
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Once the rear end is reintalled here is what it looks like...you can see the Turner Motorsport weld in plate clearly here and the Grand Am Cup bushing. Note Swaybar is disconnected. This is the drivers side rear - rear subframe mounting point. Much sturdier than stock, its not going to tear out of here.
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Last edited by FlyingDutchMan; 08-27-2005 at 12:30 AM.
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  #15  
Old 08-27-2005, 12:28 AM
FlyingDutchMan FlyingDutchMan is offline
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I'll follow up with Part 2, finishing up the front chassis.

Turner Motorsport Front Subframe Reinforcment Kit
Turner Motorsport Solid Engine and Tranny mounts.

Par3 3 Driveline mods
UUC Evo 3 shortshiftre upgrade with DSSR
UUC Clutch and Flywheel
BHS Underdrive Pulleys


These parts are completed by I can't post pictures until the magazine article have hit and are off of the newsstands.
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  #16  
Old 09-22-2005, 10:01 PM
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fantastic write up...now all i need are the tools.
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  #17  
Old 09-22-2005, 10:12 PM
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Quote:
Originally Posted by Riuster
fantastic write up...now all i need are the tools.
Excellent Sander!

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  #18  
Old 09-22-2005, 10:34 PM
Andre Yew Andre Yew is offline
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For all the bad stories we hear about other dealers, SBAG (formerly Cutter Motors) is amazingly tolerant and sympathetic to modified and tracked cars. This thread pretty much proves it, but my experience with them, along with other people in SB I know who have modified and tracked BMWs, has been pretty positive, too.

--Andre
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  #19  
Old 09-23-2005, 05:45 PM
FlyingDutchMan FlyingDutchMan is offline
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Quote:
Originally Posted by Andre Yew
For all the bad stories we hear about other dealers, SBAG (formerly Cutter Motors) is amazingly tolerant and sympathetic to modified and tracked cars. This thread pretty much proves it, but my experience with them, along with other people in SB I know who have modified and tracked BMWs, has been pretty positive, too.

--Andre
True...at least they'll work with you if you ask nicely...

It would be kind of hard to be intollerant of modders, aka BMW enthusiasts, and then credibly host events like Bimmerfest. Jon Shafer deserves a lot of credit for helping to set the tone there years ago.
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  #20  
Old 01-29-2006, 10:26 PM
black318i black318i is offline
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Did you remove the gas tank befor welding in the front plates? Also did you use a MIG welder?

Quote:
Originally Posted by FlyingDutchMan
Rear Turner Motorsport mounting point plated in place ready to be welded in...weld thru primer
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  #21  
Old 01-29-2006, 10:36 PM
FlyingDutchMan FlyingDutchMan is offline
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Quote:
Originally Posted by black318i
Did you remove the gas tank befor welding in the front plates? Also did you use a MIG welder?
No, we didn't. We actually filled the tank with fuel, because liquid fuel is less flammable that gas vapor.

You don't really get that close to it, we did keep lots of air and wet rags around the area being welded to keep things cool.
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  #22  
Old 01-31-2006, 09:30 PM
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Very cool write up!
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  #23  
Old 02-01-2006, 03:52 AM
PhilH PhilH is offline
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I agree, great pictures too.
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