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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

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Old 03-03-2009, 04:04 PM   #1
djmtsu
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There are two issues with the RB brace:

1) The arm for the brace goes to the wrong side of the engine bay (should go to the passenger side)

2) There is no real support for the brace where it mounts to the sheet metal (can rip out f you have enough torque and a bad engine mount)

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Old 03-03-2009, 05:35 PM   #2
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Quote:
Originally Posted by djmtsu View Post
1) The arm for the brace goes to the wrong side of the engine bay (should go to the passenger side)
With it on the driver's side the accelerating torque pulls on the bar and pushes on decelerating torque, isn't that better for a solid rod? I know some torque braces use hydraulic or gas pistons so to me it makes sense for those to be mounted to the other side, compresses on accel and stretches on decel.


Quote:
Originally Posted by djmtsu View Post
2) There is no real support for the brace where it mounts to the sheet metal (can rip out f you have enough torque and a bad engine mount)
I could see that happening, maybe.... the rubber bumpers on the RB bar mount will apply force over an area of approximately 1.5 to 2 square inches. Even making 600ft lbs of torque, the bar connects at what, 18" from the centerline of the e-shaft? That would apply 400lbs to a bumper against the sheet metal... I guess I don't know if that would be enough to tear it out, maybe after a lot of abuse. I'm gonna guess that if you're making 600ft lbs of torque with any 13B or a 12A you will already have something else figured out to keep your motor from tearing itself out of your engine bay, but I don't know.
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