V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

STB = Bad Vibration...help please?!?!

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Old Nov 29, 2002 | 05:32 PM
  #1  
1991rsblue's Avatar
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From: nepa
STB = Bad Vibration...help please?!?!

i just purchased a 3 point strut tower brace from BMRFabrication.com. I installed it according to the directions and when i took it out for a test drive the first thing a heard was an enourmouse grinding sound which sounded like something was rubbing on it but yet nothing is touching it from the engine. the second thing i felt was a bad vibration when hitting the brakes which i didn't have before. Should i be aware of something? i emailed BMR and they thought i should call because i can't explain my question well enough for them to understand it....idiots! anyways, i'm telling you what i told them. does strenghtening the chassis make more stress for other components to make this crap occur on my car??? thanks
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Old Nov 29, 2002 | 05:35 PM
  #2  
TomP's Avatar
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From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
How did you install the brace? Did you have to loosen up any of the strut tower bolts (which would throw the front end out of alignment)?
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Old Nov 29, 2002 | 05:38 PM
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1991rsblue's Avatar
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From: nepa
what i did was this....

i installed the tower brace first with everything loose and then marked spots and drilled. when i added the brace and bolts everything fit snug. i then added the 3 point part of it and that fit snug. i then tightened everything down to specs and then that's it.
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Old Nov 29, 2002 | 05:47 PM
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From: nepa
this thig is pissing me off. i just went outside to check everything over and make sure everything was installed correctly and it is. i found some articles written by other members who have the same brace and they love theirs. i don't know why mine is such a PITA
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Old Nov 29, 2002 | 05:52 PM
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Ovrclck350's Avatar
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From: Longview, Tx
I dont' think it's the STB. I think you have a brake problem. Check your front rotors and pads. If you still think it's the STB, take it off, and see if it still happens.
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Old Nov 29, 2002 | 09:43 PM
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1991rsblue's Avatar
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From: nepa
it WAS the STB!!!!! i figured it out. for everyone who wants to get a STB from BMR Fabrication you have to use a washer between the inner bolts on each tower in between the brace and the metal. I guess the miniture gap that was there made a whole difference. Boy i'm glad i figured it out before i got really pissed at BMR. You would think they would tell you that you need a extra piece to make the STB work!!!!! thanks for the help
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Old Nov 30, 2002 | 12:47 AM
  #7  
91FIREBIRDGT's Avatar
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From: Riverside, CA
Car: 1991 Firebird
Engine: 3.1LV6
Transmission: 700R4
I have a questions for people with Jamex STB. What size/length bolts did you guys use for the install? Mine never came with any instructions or bolts. any help is appreciated.
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Old Dec 2, 2002 | 12:49 PM
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Y2KFirehawk's Avatar
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From: Lehigh Valley, PA
Car: 00 T/A Firehawk
Engine: 346ci LS1
Transmission: MN6
Axle/Gears: 3.42 LSD
Originally posted by 1991rsblue
it WAS the STB!!!!! i figured it out. for everyone who wants to get a STB from BMR Fabrication you have to use a washer between the inner bolts on each tower in between the brace and the metal. I guess the miniture gap that was there made a whole difference. Boy i'm glad i figured it out before i got really pissed at BMR. You would think they would tell you that you need a extra piece to make the STB work!!!!! thanks for the help
Technically the STB from BMR isn't made for the V6 (or at least it didn't say that on their site when I bought mine). I have one on my car (but mine is the 2-point becuase I didn't see the need for 3 point), and I had to create shims on each side to raise the STB up to clear the TB. Here is the thread with pictures of mine.

https://www.thirdgen.org/techbb2/sho...hreadid=144726

Glad you got it figured out in the end!

Mark
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