Stock BP 1.8 Auto strenth? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 12-14-2009, 08:40 AM   #1
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Default Stock BP 1.8 Auto strenth?

how strong are stock bp 1.8 auto trans?
anyone ever used one in a drag application with a custom torque converter and a trans brake?
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Old 12-14-2009, 10:16 AM   #2
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I too have always been curious. Even without serious mods like a TQ or trans brake, how well does it handle extra power?
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Old 12-14-2009, 10:33 AM   #3
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The only one that I personally know if is gludlow on m.net. He has an 01 auto with a FF supercharger. I rode in the car once. Shifts decent under boost. He's only running 6-8 psi though.
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Old 12-14-2009, 11:09 AM   #4
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If it helps the miata trans (4 and 5sp) were used in the b2200 behind f blocks. I have heard (not seen) of f2t (2.2 turbo mx6 engine) with atx. Weakest part of those trucks was the 7.5" rear end not the trans, even when towing.
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Old 12-14-2009, 02:35 PM   #5
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should be pretty decent ive wondered it myself but i like shifting to much.
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Old 12-15-2009, 10:28 AM   #6
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hmm might have to find one and see how it goes with decent boost
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Old 12-15-2009, 10:47 AM   #7
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There's a guy in Greece I think with FI that seems like he rags on his autobox pretty hard. He's on the slushbox section of m.net.
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Old 12-15-2009, 06:53 PM   #8
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Quote:
Originally Posted by BPT-UTE View Post
hmm might have to find one and see how it goes with decent boost
Car or trans?

I have one if you want a trans.

Should have pretty much everything you need.

Trans from a 160K 96
torque converter
ATF lines to the radiator/cooler combo
automatic radiator
shifter and linkage
Misc parts not mentioned above-all in a box with the setup.

I think that I still have the two pedal setup.

I'll sell everything that I have for $300.
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Old 12-16-2009, 07:37 AM   #9
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Haha sorry im all they way in Newzealand so that would be alot for shipping!!!
know of a few around.. i have a manual box and a 4 puk racing clutch for fun on the street. just wanting fast 1/4 times which is alot easier with an auto
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Old 12-16-2009, 09:38 AM   #10
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Just not sure how a stock auto box will handle leaving the line,full boost with slicks off the trans brake maybe id be better suited to a power glide?
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