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Old 12-02-2006, 01:22 PM   #1
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Default Those groovy engine dampers

I'm kind of annoyed at not being able to do the 2/3 shift, Anyone know of a decent engine damper that will work with a turbocharged miata? I know there were some on ebay, but I cant find the link.
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Old 12-02-2006, 01:28 PM   #2
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I used the homedepot method, only 14 bucks!

But it wasn't a damper, it was solid.
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Old 12-02-2006, 01:49 PM   #3
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I am assuming you already have the Mazdaspeed engine and differential mounts?
Try and score some RS Aizawa rear diff mount spacers or maybe a Beatrush rear platform brace.
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Old 12-02-2006, 01:59 PM   #4
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what do those aizawa spacers do?
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Old 12-02-2006, 02:07 PM   #5
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They fill in the gap between the actual diff mounts and the "Snubbers"
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Old 12-02-2006, 04:10 PM   #6
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I thinking of making one using a sway bar end link. They sell universal end links at autozone with poly bushings for bigger cars and it looks like a good fit with some brackets fab'd up.
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Old 12-02-2006, 05:04 PM   #7
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I'm just gonna get an ebay one and make it fit around the turbo. If it doesnt work, I can move on to progressively more expensive and complicated solutions.

My hunch is that putting a brace directly opposed to the engine's movement at the place of greatest angular momentum will have the greatest likelihood of fixing the problem. All the other solutions seem to offer marginal improvements in stiffness that are very close to the axis of rotation.

If the ebay brace doesnt work, I will probably do the MS mounts next, followed by the okayama tranny brace and then the FM chassis brace.
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Old 12-02-2006, 06:26 PM   #8
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The Okuyama tranny brace helps a bit...but not like doing the Beatrush rear brace will.
If you replaced the soft rubber mounts on the Okuyama with something of a higher durometer you would probably be in good shape.
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Old 12-02-2006, 06:34 PM   #9
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Ooh I never never heard of the beat rush brace before. I might give that a try then. Know of any places that have them in stock?
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Old 12-02-2006, 06:56 PM   #10
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http://www.metromotorsports.com/prod...sp?pProdID=162

Sounds like it may be sold out for now.

Here is the Okuyama front lower.
http://www.metromotorsports.com/prod...sp?PprodID=146


These guys ship really fast. I would hold off on both of these until you do the Mazdaspeed mounts though.

Here is the engine mounts.
http://corksport.com/store/index.php...0&j=1165100378
Diff Mounts
http://corksport.com/store/index.php3?cmd=checkout
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Old 12-02-2006, 07:00 PM   #11
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Are the mazdaspeed mounts really that worthwhile?
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Old 12-02-2006, 07:02 PM   #12
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Yes. They make a nice difference on their own. Even better when paired with the diff mounts. You won't get that shifter to stay in one place though untill you eliminate the powerplant frame and hard mount the tranny. The Mazdaspeed mounts are a great compromise.

You could look into these too.
http://www.function-7.com/a0-f7mx05mt.html

I have never heard of anyone actually having a set though. Kinda expensive
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Old 12-02-2006, 08:57 PM   #13
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I've got MS engine and diff. mounts as well as the Okuyama single slot brace that connects the tranny, and I still miss the 2-3 shift :(
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Old 12-02-2006, 09:08 PM   #14
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Do any of you guys run a short shifter? It was one of my first mods I did for my Miata and I never had much trouble with the 2-3 shift.
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Old 12-02-2006, 09:14 PM   #15
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How much power are you making? I never really missed shifts below 12 psi.
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Old 12-02-2006, 09:25 PM   #16
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I was making nowhere the power that you are. Rob at Flipside had the same issue once he got near the 200 whp mark and ended up eliminating the power plant frame altogether and building a front mount for the rear diff and hard mounted the transmission. It is the best shifting Miata I have ever driven. Its pretty loud with all the gear noise being transmitted right into the cabin.
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Old 12-02-2006, 09:49 PM   #17
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Alright, I'll let you guys know what works as I try it.
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Old 12-02-2006, 11:10 PM   #18
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i must shift really slow.
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Old 12-02-2006, 11:25 PM   #19
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12 psi on a 1.6L is less torque and hp than on a 1.8 with a 99 head. You've got less bore and slightly less stroke riding on the same transmission and similar motor mounts.
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Old 12-03-2006, 12:24 AM   #20
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never had a 2-3 problem.... but at redline, the 1-2 shift is a PITA..... even with my mazdaspeed mounts and short shifter
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