Trackspeed's '02SE "Acamas" - EFR6758, TSE motor, 400whp or bust - Page 13 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 09-09-2016, 08:23 PM   #241
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Wow there is all sorts of conflicting information out there.
Welcome to Mustang land. There is a reason I gave up on that platform/"community."
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Old 09-09-2016, 08:26 PM   #242
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it's even worse with the newer ones. I literally cringe every time I visit M6G. 99% mouth breathing retards, 1% actual knowledgeable people
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Old 09-09-2016, 08:32 PM   #243
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It's a serious struggle. If a 99-04 fits the bill they are significantly cheaper, and even newer/nicer. But the gearing is slightly different.

Edit: looks like it does have a .68 5th and the slightly different other ratios. I wonder how they would do.

http://www.standardtransmission.com/.../TTC-specs.pdf

Last edited by aidandj; 09-09-2016 at 08:48 PM.
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Old 09-09-2016, 09:05 PM   #244
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?

Identification Key to Borg-Warner T5 transmission ID Tags

Edit: I see this was already posted, ignore me.

Last edited by hi_im_sean; 09-09-2016 at 09:16 PM.
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Old 09-09-2016, 09:17 PM   #245
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I'll verify my 5th gear ratio before I install.
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Old 09-09-2016, 09:32 PM   #246
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I'm going to do a little digging and try and find some local to test out.

Mods feel free to break this discussion off into its own thread . It would be great if Mt.net became the go to t5 resource lolol.
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Old 09-09-2016, 11:31 PM   #247
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How good can a T5 feel compared to a Miata 5 or 6 speed. Just curious.
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Old 09-09-2016, 11:34 PM   #248
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Probably apples to oranges but the t5 in my roommates s10 is the sexiest trans I've ever shifted.

I'm mostly doing it for the bolt in huge torque solutions. When I run into that money tree I've been looking for.
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Old 09-22-2016, 01:41 AM   #249
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Couldnt you technically just shave down the inlet on the copressor housing on a 6258 to match a 6758? Or just swap the housings if you don't want to shave it down?
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Old 09-22-2016, 01:44 AM   #250
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...wut?

Swapping the compressor housing means swapping the compressor....
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Old 09-22-2016, 01:45 AM   #251
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Quote:
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...wut?

Swapping the compressor housing means swapping the compressor....
It just pops off after removing the clamp
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Old 09-22-2016, 01:47 AM   #252
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what are you even talking about?

But no, a 6758 means it has a 67mm compressor wheel. 6258 means it has a 62mm compressor wheel. They aren't just compatible...
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Old 09-22-2016, 01:50 AM   #253
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what are you even talking about?

But no, a 6758 means it has a 67mm compressor wheel. 6258 means it has a 62mm compressor wheel. They aren't just compatible...
Not from what Andrew showed me. He just said the inlet on the compressor housing is slightly bigger, the compressor wheel is the same size. Either this, or I misunderstood him and I'm a dumbass.
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Old 09-22-2016, 01:55 AM   #254
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Full race 6758 specifications: BorgWarner EFR 6758 Turbo - Full-Race.com

Compressor Wheel OD: 67mm
Compressor inducer: 53.9mm

Full race 6258 specifications: BorgWarner EFR 6258 Turbo - Full-Race.com

Compressor Wheel OD: 62mm
Compressor inducer: 49.6mm

They both have a 58mm turbine wheel. Hence the 62/6758
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Old 09-22-2016, 01:58 AM   #255
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fail.
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Old 09-22-2016, 02:00 AM   #256
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I'm still a little confused what you are talking about.

I just pulled apart my 6758 and the compressor housing fits very closely to the wheel. I guess you could like machine it out, but thats just like upgrading to the next compressor housing size.
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Old 09-22-2016, 02:03 AM   #257
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Quote:
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I'm still a little confused what you are talking about.

I just pulled apart my 6758 and the compressor housing fits very closely to the wheel. I guess you could like machine it out, but thats just like upgrading to the next compressor housing size.
Ok, not the compressor wheel OD, but the metal before the turbine was thinner on the 6758. Andrew said it was the same housing, but the inlet was shaved.
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Old 09-22-2016, 02:04 AM   #258
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Turbine? Or compressor?
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Old 09-22-2016, 02:06 AM   #259
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Turbine? Or compressor?
The compressor wheel housing....where air goes in and exits to the intercooler.
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Old 09-22-2016, 02:08 AM   #260
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making a mistake machining a comp housing would be a $1600+ mistake.
So yeah. no. replace it unless you're a baller machinist
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