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Old 12-02-2009, 06:13 PM   #1
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Default Is anyone here using an underdrive pulley?

I read quite a few horror stories on m.net from people using underdrive pulley on turbocharged cars.
Has anyone here have a first hand experience (good or bad)?
I wanted to get one but from what I read until now it's seems like a bad idea...
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Old 12-02-2009, 06:21 PM   #2
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Well I guess there is not need for this thread anymore...
https://www.miataturbo.net/forum/t20396/
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Old 12-02-2009, 06:21 PM   #3
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Most of the posters on here are also on miata.net, pretty sure it has been covered on here as well, did you try a search?
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Old 12-02-2009, 06:36 PM   #4
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I did and they were a few people supporting that maybe there other contributing factors like the cavitation and aeration that might be responsible for the destruction of the oil pumps... but I better be safe than sorry
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Old 12-02-2009, 06:38 PM   #5
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I have one on my daily that I'll trade you for a 1.8l pulley.
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Old 12-02-2009, 06:58 PM   #6
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rice
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Old 12-03-2009, 03:17 PM   #7
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A turbo will give you way better gains. Do that.
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Old 12-03-2009, 03:19 PM   #8
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Quote:
Originally Posted by dustinb View Post
A turbo will give you way better gains. Do that.

...he has a turbo.
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