Stock 1.6 with 2860RS at 12psi - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 06-17-2010, 01:35 PM   #41
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Definitely been watching this build and can't wait to see the next set of results as i'm running a nearly identical setup
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Old 06-23-2010, 07:59 PM   #42
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i need to start a build thread but im too lazy.

**** your china ****.
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New numbers coming soon... but this turbo has about 6mm inducer size and 11mm exducer size over my last setup
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Old 06-23-2010, 08:09 PM   #43
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Holy crap that is pretty
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Old 06-23-2010, 08:33 PM   #44
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Elegance. its happening.


Tomorrow night im cutting off the T2 flange and modifying the manifold to work with the turbo, then taking it to the welder to have them TIG it.... i dont have the proper gas for my MIG and i much prefer a nice clean weld for something like this.

from there i need to see how the downpipe is going to work out and hopefully everything will line up, but that may be optimistic.

planning on being boosted next week and then i will head to the m-tuned shop for some dyno time.
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Old 06-23-2010, 08:49 PM   #45
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2871R .86 = panties dropping
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Old 06-24-2010, 12:03 AM   #46
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Im down for that.


Sav, what trim is your compressor? this was discussed in another thread....
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Old 06-24-2010, 12:18 AM   #47
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fiddy-two.
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Old 07-02-2010, 04:51 PM   #48
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Just a verbal update... been driving the car for a few days now... ~1200km...

the car is just as responsive if not more responsive than before.
with no boost control setup, i am getting full boost off the wastegate spring (10psi) at 3600-3700rpm. (2871R 0.86TiAL exhaust with 56 trim compressor wheel)

only difference besides that is the vband flange on the turbo manifold and i modified my downpipe to be externally vented since it was being a royal pain to setup and it keeps me a little more sane on the street.
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Old 09-04-2010, 07:10 PM   #49
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Any updates on this? How are things going? Did you get a tune done yet and if so can you post a map?

I'm thinking of possibly a 2860RS or 2871R with a .64 tial housing on my 1.6 w/ built head. Think it could be quite the hot setup.
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Old 09-05-2010, 05:24 PM   #50
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i street tuned it at 12psi and it didnt like it.

Car is done for the season.
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Old 09-05-2010, 05:34 PM   #51
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What don't you like?
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Old 09-05-2010, 05:36 PM   #52
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either he popped his motor or the turbo was nowhere near its efficiency plateau and didn't make much power
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Old 09-05-2010, 05:38 PM   #53
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.86 hotside I think is too big, should have went .63 the power difference isn't worth the lag associated with the .86. Numbers don't seem right though, I made 60+ whp more at only 3 more psi then you with a .48 hotside

Last edited by jtothawhat; 09-05-2010 at 05:48 PM.
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Old 09-05-2010, 05:51 PM   #54
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^^ You running a 28RS?
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Old 09-05-2010, 07:34 PM   #55
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Wirelessly posted

You 2871 guys make me hate my turbo. However I\'m a ***** and scared of breaking drivetrain.

Last edited by hustler; 09-05-2010 at 07:45 PM.
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Old 09-05-2010, 11:43 PM   #56
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when actually driving my car it was very fun. im not worrying about the response. change your driving style a hair for a larger turbo and you will be ok....

my engine blew, so im done for the season waiting for a rebuild or some swap.
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Old 09-06-2010, 06:49 PM   #57
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I'm torn b/w a .64 and .86 housing. I don't want to make a mistake buying the wrong one since the housings are like $350. I wish more 1.6L guys were running real turbos.
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Old 09-06-2010, 08:28 PM   #58
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how high are you planning to rev it out?
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Old 09-06-2010, 09:57 PM   #59
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My head is good for 8K+ but I will most likely run the hard cut around 7600ish RPM. I need the extra RPM's for my local track with my rear end/wheel tire size.
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Old 09-06-2010, 11:21 PM   #60
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get the 2871R 0.64 housing then... if you were to run the engine up to or over 8 grand then you would need the extra flow of the 0.86
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