Trackspeed's '02SE "Acamas" - EFR6758, TSE motor, 400whp or bust - Page 14 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 09-22-2016, 02:08 AM   #261
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Ok you said turbine in the last post.

Not shaved, machined. Probably with a pretty high accuracy.
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Old 09-22-2016, 02:11 AM   #262
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Ok, so you could slap the 6758 housing and wheel on and have a 6758
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Old 09-22-2016, 02:12 AM   #263
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Quote:
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Ok you said turbine in the last post.

Not shaved, machined. Probably with a pretty high accuracy.
Call it what you must.
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Old 09-22-2016, 02:13 AM   #264
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Dude. What are you smoking.

6258 and 6758 are the exact same but a bigger compressor wheel and machined out housing.

You would have to then rebalance the turbo, buy a new compressor housing and wheel.

You buy a supercore and put your old turbine housing on it.
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Old 09-22-2016, 02:13 AM   #265
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and have to re-balance the whole thing. and still stupid cause you can just sell the 62 since they hold value and buy 67. I dont get this conversation
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Old 09-22-2016, 02:13 AM   #266
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Quote:
Originally Posted by MiataMan00 View Post
Call it what you must.
Alright, grab a file and shave out your compressor housing, do a back to back dyno please.
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Old 09-22-2016, 02:16 AM   #267
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Guys, it was a theoretical question. Im NOT going to do it. Aidan, you just said what I've been trying to say this whole time. But I or you chose different words
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Old 09-22-2016, 02:21 AM   #268
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You two should
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Old 09-22-2016, 02:22 AM   #269
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Old 09-22-2016, 02:26 AM   #270
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The external dimensions are the same. The 62 and 67 have different internal dimensions, obviously. You cannot "shave down" a 62's compressor housing to fit a 67, nor can you "slap on" a 67mm wheel to a 6258. You change the entire CHRA (including turbine wheel) and compressor housing.
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Old 09-22-2016, 08:52 AM   #271
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Quote:
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How good can a T5 feel compared to a Miata 5 or 6 speed. Just curious.
Nowhere near as good as a Miata trans, even with the best shifter. However, with practice you can shift remarkably fast. Just don't expect to do it right off the bat.
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Old 09-22-2016, 09:03 AM   #272
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I concur. T5 doesn't feel bad of course, but the miata 5 speed is much slicker.
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Old 09-22-2016, 02:49 PM   #273
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Also depends on your preference. The T5 isn't as slick, like Tim said, but it has a very precise, rifle-bolt feel to it. I had one in a Merkur and loved it.
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Old 09-22-2016, 02:50 PM   #274
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It literally sounds like you are cycling a rifle.
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Old 09-22-2016, 03:02 PM   #275
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People will complain about the shifter no matter what. There are people who think the 6-speed is simply undriveable, for instance. I could tell you what I think of those people, but I'll get nasty emails about it later, so I'll refrain. Needless to say, the T5 is a direct-mount shifter, I'm sure it will be fine after you get used to it.
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Old 09-22-2016, 03:11 PM   #276
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People should try driving an Elise if they think any direct-mount shifter is undrivable lol.
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Old 09-22-2016, 03:12 PM   #277
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Quote:
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It literally sounds like you are cycling a rifle.
As long as it doesn't fling bits of brass out the side every time you shift.

--Ian
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Old 09-22-2016, 03:12 PM   #278
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True. The miata 5 speed feels like you're shifting against some ball detents. T5 feels like a rifle bolt. When I'm cruising thru my neighborhood, you can hear the shifting echo against the houses. Snick-SNACK!
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Old 09-23-2016, 11:46 AM   #279
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Re: T5: i'm totally ok with the rifle bolt results. I will miss having six speeds but that is admittedly probably 90% psychological. I like having a highway gear. I don't want to clutter this thread up with that however.
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Old 09-23-2016, 02:18 PM   #280
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I had tendencies of missing shifts driving a T5 car at race speed, more so than learning to speed shift the Miata trans.
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