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DIY Turbo Discussion greddy on a 1.8? homebrew kit?
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Old 12-24-2010, 09:54 PM
  #61  
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Sounds great.
In for results
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Old 12-24-2010, 10:37 PM
  #62  
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For reference I plan on going with a genuine 2871 when I switch to V-Bands later next year. If nothing is proven by then, and I can find a 2871 normal housing for a Begi exhaust manifold I will drive down to DiyAutoTune to get a pull with the exactly the same tune to see what the differences are. This way we will have a built 1.8 VVT motor between the china 2871 and a Garrett 2871 run on the same dynos.
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Old 12-24-2010, 10:43 PM
  #63  
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A bit off topic question for turbo guru gays:
when big turbo supra/mustang/etc guys refer to a turbo by mm, which measurement are they talking about?

You hear people say "he's got a 74mm turbo" and "he's got a 100mm turbo" etc......

Is that an inducer/exducer/turbine measurement?

I keep seeing videos on youtube with descriptions "80mm turbo supra".......

example:
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Old 12-24-2010, 10:49 PM
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I always thought that it was the size of the inlet!
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Old 12-25-2010, 01:15 AM
  #65  
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Pretty sure it's compressor exducer.
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Old 12-25-2010, 01:21 PM
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Originally Posted by Savington View Post
Pretty sure it's compressor exducer.
It is.

Originally Posted by shuiend View Post
For reference I plan on going with a genuine 2871 when I switch to V-Bands later next year. If nothing is proven by then, and I can find a 2871 normal housing for a Begi exhaust manifold I will drive down to DiyAutoTune to get a pull with the exactly the same tune to see what the differences are.
I have a brand new .64 A/R turbine housing with standard T25 bolt pattern that came on my geniune 2860, but as you know, I have no use for common bolted flange peasantry. It's the same housing that's used on a 2871. Does your churbo also have a .64 A/R turbine? Ideally they would be a similar spec for comparison purposes. If I haven't otherwise disposed of that housing by the time you get around to it, we can probably arrange something for testing purposes.
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Old 01-03-2011, 01:58 AM
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Originally Posted by ScottFW View Post
I have a brand new .64 A/R turbine housing with standard T25 bolt pattern that came on my geniune 2860, but as you know, I have no use for common bolted flange peasantry. It's the same housing that's used on a 2871. Does your churbo also have a .64 A/R turbine? Ideally they would be a similar spec for comparison purposes. If I haven't otherwise disposed of that housing by the time you get around to it, we can probably arrange something for testing purposes.
I am not sure what A/R my chrubo is. I will see if I can find that out. I am pretty sure when I order my Garrett 2871 I am going to go with a .86 A/R though. So your housing probably will not work. I will talk to you about it later in the spring.
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