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Engine Damper

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Old Oct 2, 2007 | 08:47 PM
  #11  
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I have an ETB in my 3rd gen RX-7 and it made a huge difference due to the reciprocating mass of the rotary engine. Under WOT, the rotary would torque over hard like a screwdriver, when I would depress the clutch to shift I would unload the motor and the mounts would flip it back into place, then I would engage the next gear and floor it again and the motor would repeat the same action. Imagine using a hand screw driver: You use one hand to steady the tool while the other is doing the screwing, you turn once, rest, again, rest...

The problem that arose in the RX-7 is that the transmission bell would want to turnover with engine load, as well. This caused high hp 7 drivers to sometimes make the "money shift" from second into the gate between 1st and 3rd or directly into 1st gear.

Anyway, the motor mount design must be much better in the S2000 (in addition to the reduced reciprocating mass of a piston engine as compared to a rotary) because I don't experience the same problem at all and I am supercharged (which should exaggerate the problem due to the increased torque production). The only issue I've heard of has to do with turbo guys melting the rear mount due to the extreme heat of the downpipe...other than that I haven't really heard of a similar issue with our platform.

So, that's a long-winded vote for bling, yo.
Old Oct 2, 2007 | 09:16 PM
  #12  
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If it does help with the shifter shake it might serve a purpose in a race car where your hand spends a lot of time on the shifter.
Good guess but actually you spend as little time as possible with your hand on the shifter in a race car; just to shift.

So it's yet another "it works on X so it must also work just as well on an S2000" product. Great answers, many thanks!

If it doesn't make my car faster, lighter, safer or rule compliant then it doesn't go in or on my car.
Old Oct 2, 2007 | 10:49 PM
  #13  
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we have a winner.
Old Oct 3, 2007 | 03:21 AM
  #14  
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I've got one on my motorcycle.





Old Oct 3, 2007 | 03:23 AM
  #15  
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Originally Posted by tinkfist,Oct 2 2007, 07:26 PM
But what if you used it in conjunction with a strut tower bar?
I've got these on my bike too









Old Oct 3, 2007 | 07:07 AM
  #16  
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Maybe nothing for NA S2K owners but I noticed a difference in my boosted application. Another engine mount brings piece of mind when you are making more torque. In a terrible irony though my engine was too stiff. The vibrations were cracking my tubular manifold. The ETD came off but it will go back on when I get a standard log manifold.

What hasn't been answered is if there's a way to fill the engine mounts with a silicone or something. I'd be interested in this if it were possible.
Old Oct 3, 2007 | 07:12 AM
  #17  
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Originally Posted by Tyraid2K,Oct 3 2007, 08:07 AM
In a terrible Irony though my engine was too stiff. And the vibrations were cracking my tubular manifold.

What hasn't been answered is if there's a way to fill the engine mounts with a silicone or something. I'd be interested in this was possible.
That's not really irony. It just means that you didn't consider the reasons why Honda built some compliance into the engine mounts in the first place.

And the OEM engine mounts are fluid-filled, so I'm not sure what you are asking for.
Old Oct 3, 2007 | 08:55 AM
  #18  
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Originally Posted by mikegarrison,Oct 3 2007, 10:12 AM

And the OEM engine mounts are fluid-filled, so I'm not sure what you are asking for.
That's what I was asking for.

Throw the silicone idea out the window.

EOS

end of story.
Old Oct 3, 2007 | 09:40 AM
  #19  
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OK. Fair enough.
Old Oct 3, 2007 | 10:02 AM
  #20  
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you gave your mounts fake tits?



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