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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 04-28-2010, 06:21 PM   #1
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Default Building time attack turbo mx5

Hi, i have a 1.6 with a tdo4h turbo and running 10psi. It has 200rwhp. I am building a 1.8 motor and was wondering which turbo would you reccomend to give the same drivability as my old setup?? I want to make more power, but still be responsive and easy to drive. Looking for around 300rwhp. I use the car for time attack only. It is not driven on the street.
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Old 04-28-2010, 06:27 PM   #2
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2871
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Old 04-28-2010, 06:34 PM   #3
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FYI, 300whp isn't easy to drive no matter what turbo you stick on it. You want to look at either a 2860RS if you're serious about that 300whp limit, or a 2871R if you're planning on making more power someday.
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Old 05-05-2010, 04:06 AM   #4
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Savington- do you ever race at Thunderhill or Sears Point/Infineon?

Your Miata sounds like a blast. Especially weighing under 2200lbs!
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Old 05-05-2010, 04:15 AM   #5
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I've run at every track in California, including Thunderhill and Infineon.

It's a lot of fun to drive, but you'd better be very awake.
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Old 05-05-2010, 04:16 AM   #6
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Quote:
Originally Posted by Savington View Post
I've run at every track in California, including Thunderhill and Infineon.

It's a lot of fun to drive, but you'd better be very awake.
Alot of fun to ride in too

Here is a few laps in a ~250-275whp miata. Should be around 2300lbs or so.
http://www.youtube.com/watch?v=c4nD0-FNiH0
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Old 05-06-2010, 02:07 AM   #7
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Old 05-06-2010, 03:24 AM   #8
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That's an exhaust manifold manifold. Here at MT.net we bolt a big pinwheel to ours, the OP is asking about which pinwheel to use.
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Old 05-06-2010, 11:02 AM   #9
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If I remember right, it's also a GT2560, making the OP's stated power goal. Should be zippy.
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Old 05-06-2010, 12:54 PM   #10
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Old 05-07-2010, 03:16 AM   #11
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Quote:
Originally Posted by SolarYellow510 View Post
That looks like the ideal set up. Thanks.
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Old 05-07-2010, 04:06 AM   #12
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2860rs will do the trick and will leave a little head room
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Old 05-07-2010, 08:46 AM   #13
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I've seen many guys recommending 2871 but which one of these do you mean?
GT2871R - 472560-15
GT2871R - 743347-1
GT2871R - 743347-3
GT2871R - 707160-10
GT2871R - 780371-2
GT2871R - 743347-2
GT2871R - 743347-4
GT2871R - 771847-1
http://www.turbobygarrett.com/turbob...ochargers.html
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Old 05-07-2010, 11:13 AM   #14
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The only difference between those different numbers are some of them are the .86AR house and some are the .64AR. Also some come with a 3 bolt and 2 bolt compressor housing and the other ones are the std 3" house for the turbo intake

Most std one tho is probably the GT2871R - 743347-3 if your want a .64 AR
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