AWR mounts vs SSK to help missing 3rd gear?
#23
Do the poly bushings in the awr mounts ever need to be replaced? A rubber bushing would absorb more of the smaller vibes that most complain about. I wouldnt run softer than the 70 duro in a racecar. But an option for the high power street miatas that lasts longer than 100 miles would be nice.
The stock style rubber fail so fast because its literally pulling the rubber apart everything the motor moves.
The stock style rubber fail so fast because its literally pulling the rubber apart everything the motor moves.
#24
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Do the poly bushings in the awr mounts ever need to be replaced? A rubber bushing would absorb more of the smaller vibes that most complain about. I wouldnt run softer than the 70 duro in a racecar. But an option for the high power street miatas that lasts longer than 100 miles would be nice.
#27
And if AWR was smart, and they are, these poly bushings are something right out of the ES or prothane catalog which probably means there's a stock rubber bushing from some random car that already drops into their mounts. By virtue of the design of these mounts there's really no way that a rubber mount wouldnt last 20 years in it and it would die from heat and age rather than the mechanical forces involved.
#28
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And if AWR was smart, and they are, these poly bushings are something right out of the ES or prothane catalog which probably means there's a stock rubber bushing from some random car that already drops into their mounts. By virtue of the design of these mounts there's really no way that a rubber mount wouldnt last 20 years in it and it would die from heat and age rather than the mechanical forces involved.
#30
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Other than ease of install or possibly the overall length? I can grease up a bushing and hammer it in with the best of them, but the length might get tricky. I guess I should have clarified, IIRC on the Miata 2 piece ES bushings we installed, there were a few where the 2 halves were not the same length past the shoulder. It may be the same for whatever bushing half they used. Just a random thought.
#33
I think going to a lower durometer will not cure the NVH "issue" (It's not really an issue, this product was designed for racing). Decreasing the durometer of the bushing, eventually a point will be met where durability will be an issue. I think it will reach this point before the average person would consider this an acceptable street mount.
I think there is a way to reduce NVH, while keeping the same style mount which eliminates almost all engine movement. If the O.D. of the bushing and chassis-side mount(The part that houses the bushings) is increased, it will increase the amount of bushing material between the engine side and chassis side of the mount. This would decrease NVH to an extent, and only introduce a very small amount of extra deflection.
Then again, rubber may be the answer, because this will likely result in custom bushings(not that big of a deal, but just something to consider, as the AWRs probably use some bushing off the shelf from ES/Prothane/whatever)
#35
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Tony actually already got back to me. Seems like a really nice guy. He said they looked into the idea of using a softer material, but decided against it. He also informed me of the dimensions of the bushing they use.
"If you can find a bushing that has a 1.5" barrel with a .750 bore and a .250 flange in a softer durometer from someone other than energy suspension, then you might be able to do this."
I italicized that part so anyone reading this later would see that. Anyone got any ideas now?
"If you can find a bushing that has a 1.5" barrel with a .750 bore and a .250 flange in a softer durometer from someone other than energy suspension, then you might be able to do this."
I italicized that part so anyone reading this later would see that. Anyone got any ideas now?
#39
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Just installed some used supermiata (AWR) mounts with 70 durometer bushings. It's the older 1.5 inch style btw. Im not sure how I feel yet. Its a good bump in NVH, but I want to give it a bit. Still, I did a bit of research and it looks like the leaf-spring shackle bushings from older domestics (YJ, early 70s Chevys, etc) might be able to fit instead of the poly. Just thinking for now ... I'll update if I do it. Figured I would put it out there in case others might be interested to look into it further.
#40
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Ordered this, which looks like it will work well, perhaps needing trimming. Part is HB-902 leaf spring bushing:
https://www.generalspringkc.com/hb90...uired-per-eye/
I'll update when I install
https://www.generalspringkc.com/hb90...uired-per-eye/
I'll update when I install