twin turbo - Ford Powerstroke Diesel Forum
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post #1 of 35 Old 05-20-2009, 08:28 AM Thread Starter
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twin turbo

can you use your stock turbo in a twin turbo setup?
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post #2 of 35 Old 05-20-2009, 08:41 AM
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Quote:
Originally Posted by matthew7.3 View Post
can you use your stock turbo in a twin turbo setup?
I wouldnt think so Anytime you step up to twins your usually pushin higher numbers and a stock blower just wouldnt handle the heat or boost. Thats what my logical thinkin tells me, i may be wrong

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post #3 of 35 Old 05-20-2009, 08:43 AM
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i know of people that have used the stock turbo in a compound set up
post #4 of 35 Old 05-20-2009, 08:51 AM
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I think you could probably use the stock 1 as the first turbo then your 2nd needs to be upgraded. I may be wrong, but thats what I think.

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post #5 of 35 Old 05-20-2009, 09:19 AM
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You could use the stock turbo as your 1st stage but i wouldnt. I would use a 38r at my 1st stage then like a 42 or something.

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post #6 of 35 Old 05-20-2009, 10:01 AM
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several have tried stock turbo as the secondary and it didnt last.

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post #7 of 35 Old 05-20-2009, 10:03 AM
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Quote:
Originally Posted by 4fingers View Post
several have tried stock turbo as the secondary and it didnt last.
Why would you even try a stock turbo as a secondary turbo? Your second turbo is to be the bigger turbo because it is getting feed by the smaller one.

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post #8 of 35 Old 05-20-2009, 10:16 AM
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I am pretty sure that in a compound setup the first turbo is larger than the second one. I know that is the case in multi stage air compressors. If you if you send compressed air to a larger stage it will decompress
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post #9 of 35 Old 05-20-2009, 10:22 AM
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i dont know the stages but the exhaust goes into the smaller turbo first then into the bigger one. the inductions side is opposite, air goes into the larger turbo first and into the smaller one second
post #10 of 35 Old 05-20-2009, 10:25 AM
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Quote:
Originally Posted by wriott View Post
i dont know the stages but the exhaust goes into the smaller turbo first then into the bigger one. the inductions side is opposite, air goes into the larger turbo first and into the smaller one second
That is absolutely right

You want something like a 38r back on the pedistal for the exhaust off the manifolds then from there you run the exhaust out of it into the bigger turbo then out.

But of the air side of things you want your air filter on the big turbo and then going into the smaller one then into the intake.

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