I'm thinking of ordering a Beatrush PPF brace. (I have the other Beatrush braces except the FSTB and the front underbrace; the stock steel braces are good enough, imo.)
I'm concerned about vibration and gear whine with the PPF. In another thread, someone mentioned that they had cut off the center mounting, effectively making the PPF a frame-reinforcement bar, without the capability of reinforcing the rear drivetrain support member.
I don't want to do that.
I'm wondering if attaching the center mounting with thick rubber grommets between the PPF plate and the support member, and between the two nuts and the PPF plate on the other side, will isolate the PPF and prevent some of the whine and vibration. The grommets could be removed and then reinserted again, depending on need.
the more you try to get rid of the vibration and noise the less will your brace work.
those rubber stuff would not help too much to isolate and you would not be able to make the bolts tight enough.
you better decide between brace with noise or no brace no noise
Actually, without the center mount, the PPF acts as an additional chassis brace. That's probably good.
What I'm asking is this: Can you install the PPF so it could act as a chassis brace on the road (center mount isolated by rubber or poly grommets/bushings and noise reduced), and as full PPF brace at the track (isolaters removed, center mount fully tightened down, metal-to-metal)?
I think I'm just going to have to try it for myself....
Originally Posted by Disraeli
Actually, without the center mount, the PPF acts as an additional chassis brace. That's probably good.
What I'm asking is this: Can you install the PPF so it could act as a chassis brace on the road (center mount isolated by rubber or poly grommets/bushings and noise reduced), and as full PPF brace at the track (isolaters removed, center mount fully tightened down, metal-to-metal)?
I think I'm just going to have to try it for myself....
This would be interesting, but considering the two nuts are holding the diff to the frame rail I would really like to make sure they are fully tightened and seated securely. Workshop manual calls for 126-154Nm on these nuts.
Have you considered the HKS Kansai Diff Support (KSZ103)? I have the ILMO underside bars (which are practically the same as the beatrush) and the Kansai bar bolts on without any problems.
Wait and see how it sounds. I kinda like the gear sound.
dave and miatank - can always cut the connection
Originally Posted by Disraeli
I'm thinking of ordering a Beatrush PPF brace. (I have the other Beatrush braces except the FSTB and the front underbrace; the stock steel braces are good enough, imo.)
I'm concerned about vibration and gear whine with the PPF. In another thread, someone mentioned that they had cut off the center mounting, effectively making the PPF a frame-reinforcement bar, without the capability of reinforcing the rear drivetrain support member.
I don't want to do that.
I'm wondering if attaching the center mounting with thick rubber grommets between the PPF plate and the support member, and between the two nuts and the PPF plate on the other side, will isolate the PPF and prevent some of the whine and vibration. The grommets could be removed and then reinserted again, depending on need.
Your original post is confusing the hell out of me. PPF is part of your car. The Beatrush brace attaches to the PPF. Beatrush called it a Beatrush PPF brace which you shortened to PPF.
Originally Posted by Disraeli
Actually, without the center mount, the PPF acts as an additional chassis brace. That's probably good.
What I'm asking is this: Can you install the PPF so it could act as a chassis brace on the road (center mount isolated by rubber or poly grommets/bushings and noise reduced), and as full PPF brace at the track (isolaters removed, center mount fully tightened down, metal-to-metal)?
I think I'm just going to have to try it for myself....
I used to have one before it snapped. Now I can't fit one because of the 3quot; exhaust. However, I liked it.
As far as your question goes, you will not be able to do what you suggest. But you wouldn't want to anyway. The vibration increase is minor, and you won't notice it after a day or two, and the sound is cool. |
Post at 2-7 04:23 AM
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