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Need help identifying my twin turbos

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Old Jan 16, 2024 | 11:55 AM
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Need help identifying my twin turbos

Many years ago I bought these turbos from a guy in Germany. Manifold in excellent shape, zero shaft play etc, took the turbos apart and had the wastegate ported...and never installed them.

Recently I decided to post them for sale and all this time I didn't even notice that the numbers on the compressor housings say: N3B7-2F2-001 and N3B7-2F2-015

I googled the numbers and not much comes up

(BTW please ignore the cheapo gaskets in-between the turbos, I have the OEM ones waiting to be installed)











Found this reference (google translated the text)





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Old Jan 16, 2024 | 12:12 PM
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From: https://www2.mazda.com/en/100th/
hmm, well i guess you learn something new each day, N3B7-13-700 is the EU spec turbo, no idea what the difference would be. they used the 255/265ps spec the whole time
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Old Jan 16, 2024 | 01:03 PM
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Originally Posted by j9fd3s
hmm, well i guess you learn something new each day, N3B7-13-700 is the EU spec turbo, no idea what the difference would be. they used the 255/265ps spec the whole time
Hmm interesting . So I guess its safe to assume they are the same as the USDM turbos...I was kind of hoping they are super special

Thanks for sharing the N3B7-13-700 part number. It does come up as the Hitachi twin turbos when you search the part number.

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Old Jan 16, 2024 | 01:16 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by Spalato
Hmm interesting . So I guess its safe to assume they are the same as the USDM turbos...I was kind of hoping they are super special

Thanks for sharing the N3B7-13-700 part number. It does come up as the Hitachi twin turbos when you search the part number.
they are special, everyone else's turbos say N3C1!
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Old Jan 16, 2024 | 01:22 PM
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Originally Posted by j9fd3s
they are special, everyone else's turbos say N3C1!
that's true!
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Old Jan 16, 2024 | 02:15 PM
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From: on the rev limiter
at least they appear to be in premium condition.
.
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Old Jan 16, 2024 | 03:41 PM
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That's a new one on me!

The mating surfaces to the manifold have been ground down, I would make 100% sure they are flat and true. If not you're gonna be chasing expensive blown gaskets.

Dale
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