Page 2 of 2 FirstFirst 12
Results 26 to 41 of 41

Thread: Rear Subframe Attach Reinforcement Brace

  1. #26
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    7,793
    My Cars
    '97 M3
    The rear subframe mods are all installed.





    I have a bunch more to do at the front of the car so I donít get to test it just yet.

  2. #27
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    7,793
    My Cars
    '97 M3
    Well, she is finally back on the road. As usual there are a couple of loose ends to finish up but at least Iím driving it.

    Now on to the good stuff. Initial impression of the rear subframe forward attach point reinforcements is that the car feels like the engine is directly connected to the wheels. This car has never felt like this as long as Iíve owned it. Itís a massive improvement. I have not had a change to do a hard launch yet but I did a rolling second gear burnout by punching it in second with the traction control turned off. It was smooth and straight. The RE71Rs didnít have a chance at holding that.

    More to come, Iíll put the GoPro under the back of the car to compare before and after subframe movement....

  3. #28
    Join Date
    Mar 2001
    Location
    Oregon
    Posts
    1,611
    My Cars
    95 s/cM3,93 332is turbo,96 chevy dually, 73 camaro
    Where do I place my order? Hope you or someone comes up with a kit for the rest of us.


    Sent from my iPhone using Tapatalk

  4. #29
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    7,793
    My Cars
    '97 M3
    I made templates.

  5. #30
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    7,793
    My Cars
    '97 M3
    Iíve been scared to do a hard launch, just incase are the rear subframe attach work didnít fix the hop, but......... she is tight. Those poor RE71Rs got lit up a bunch of times from a launch first at 2000 rpm, then 3000 rpm and then close to 4500 rpm just to be brutal. Nice smooth black stripes and only a slight remenisant feeling of hop as it was bouncing off the rev limiter (not hop). Yay, I finally won that battle. Screw you hop!

  6. #31
    Join Date
    Mar 2012
    Location
    Birmingham, AL
    Posts
    4,950
    My Cars
    99 m3
    Quote Originally Posted by chikinhed View Post
    Iíve been scared to do a hard launch, just incase are the rear subframe attach work didnít fix the hop, but......... she is tight. Those poor RE71Rs got lit up a bunch of times from a launch first at 2000 rpm, then 3000 rpm and then close to 4500 rpm just to be brutal. Nice smooth black stripes and only a slight remenisant feeling of hop as it was bouncing off the rev limiter (not hop). Yay, I finally won that battle. Screw you hop!
    Huge success man!

    I think your chassis was in need of it. Still amazed you popped those welds.


    Sent from my iPhone using Tapatalk
    1989 535i - sold
    1999 Tiag/Dove M3 - sold
    1998 Turbo Arctic/black - current
    2004 TiAg/Black - Current

    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, 14mm diff bolt conversion, Poly engine mounts, UUC trans W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  7. #32
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    7,793
    My Cars
    '97 M3
    I think the popped spot welds are more common than people think. People just arenít looking for them. Another local guy was ribbing me about the crack and spot welds so I looked in his car and pointed out the popped spot welds in his car. His is a 328 that he uses for HPDE and is NA.

  8. #33
    Join Date
    Oct 2005
    Location
    Northern California
    Posts
    3,042
    My Cars
    95 M3, 15 Golf TDI wagon
    Quote Originally Posted by chikinhed View Post
    I finally got the reinforcements installed along with the subframe, suspension, diff and gas tank. Iím also halfway through modifying an e46 M3 finned diff cover for the 210 diff in the e36 subframe.







    I still have a bunch of stuff to do but at least I have some progress.

    Those two holes in the part that drops down. Do they mount to the subframe?

    You should have a guy like Rally Road remake these and give you some money for your design.


    Or I'd gladly buy this from you. You did a great job and I am glad it fixed your issue.

    -WTB: OEM Class 2 LTW GT wing with risers- Mazak

  9. #34
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    7,793
    My Cars
    '97 M3
    The two holes in the Bee piecebolt through the angles side of the subframe attach box section to stop it from flexing up and down at the narrow section where the driveshaft passes through. Mine flexed so bad that I had a five inch long crack there. It still flexed like crazy even after welding up the crack and the popped spot welds and all the additional spot welds I added.

    The only two down sides from this mod so far are the additional weight (sorry Jaker) and I get a bit more driveline noise because there is a 1/4Ē thick strip of rubber sandwiched between the brace and the forward part of the subframe. The back seat kills most of the noise though.
    Last edited by chikinhed; 07-09-2018 at 12:42 PM.

  10. #35
    Join Date
    Jun 2005
    Location
    Concord, NH
    Posts
    21,106
    My Cars
    08 E90M3; 99 E36M3 Turbo
    When does production start for the reinforcement kit?

  11. #36
    Join Date
    Jun 2011
    Location
    Vancouver, BC Ca
    Posts
    2,917
    My Cars
    1993 325is
    Quote Originally Posted by chikinhed View Post
    The only down side from this mod so far are the additional weight (sorry Jaker).
    Last edited by jakermac; 07-13-2018 at 03:40 PM.

  12. #37
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    7,793
    My Cars
    '97 M3
    I will personally inspect your car for cracks if youíd like

  13. #38
    Join Date
    Nov 2009
    Location
    Omaha/Lincoln, NE
    Posts
    597
    My Cars
    1987 325iS
    more pics of e46m cover project? i'm working on the same thing right now, just 3d printed my first prototype.

    you got me wanting to cut off the bottom of my subframe now.... just when i thought i was almost done with this project lol



    2003.5 Imolarot M3: daily
    1995 AlpinweiŖ M3: hpde


  14. #39
    Join Date
    Jun 2005
    Location
    Concord, NH
    Posts
    21,106
    My Cars
    08 E90M3; 99 E36M3 Turbo
    I was just reading an article in muscle mustangs & fast fords on subframe braces. Basically from subframe to a suspension mounting point to the rocker on on each side. Have not looked to see whether this could be done on our cars. Goal was to reduce wheel hop. Mustang subframe was observed moving 1/2 inch up and down under extreme stress.
    Last edited by pbonsalb; 07-16-2018 at 11:38 PM.

  15. #40
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    7,793
    My Cars
    '97 M3
    The diff cover project will continue. Iím almost at the end of my Ďbusyí season so I can start playing with it again. The next step is make a mounting spot for the VSS. It will be a bunch of cutting and welding and drilling.

    Thatís good to hear that stiffening up the attach points also works for other chassis out there. The car did well on the track, no strange behaviours.

  16. #41
    Join Date
    May 2002
    Location
    SW Florida
    Posts
    11,871
    My Cars
    99 E/S TS & 01///M Rdstr
    Quote Originally Posted by pbonsalb View Post
    When does production start for the reinforcement kit?
    Ah yes, I remember being asked that very same question about fourteen (>14) years ago!

    And just like chikenhed, it all came about as a desire to fix my own cars, and then other enthusiasts wanting to do the same thing. Barely a year later, I had to quit my day job, so the reinforcement business holds a lot of promise!

    Good job!

Page 2 of 2 FirstFirst 12

Similar Threads

  1. FS: E36 Rear Subframe & Chassis Reinforcement Kit
    By partsgroup in forum Race Cars & Track Parts
    Replies: 5
    Last Post: 03-12-2011, 10:36 AM
  2. E36 Rear Subframe Mount Reinforcement Plates
    By JWBrockman in forum Exterior Lighting & Body Parts
    Replies: 8
    Last Post: 04-12-2007, 11:59 PM
  3. FS: 95 M3 rear subframe with reinforcements
    By John@BPG in forum BMW Parts For Sale (Panjo) sponsored by Bavarian Auto Recycling
    Replies: 0
    Last Post: 12-14-2006, 09:21 PM
  4. FS: E36 Rear Subframe/Chassis Reinforcement Kit from Turner
    By KillrM3 in forum BMW Parts For Sale (Panjo) sponsored by Bavarian Auto Recycling
    Replies: 6
    Last Post: 09-24-2005, 07:23 PM
  5. E36 Rear Subframe/Chassis Reinforcement Kit
    By ArkticSilber in forum 1992 - 1999 M3 (E36)
    Replies: 3
    Last Post: 06-04-2003, 02:04 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •