RB downpipe and dump pipe diameter?

Discuss the RB20, RB25 and RB26 series engines.
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frosted flakes
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Hello,

I am wandering what the diameter is for the stock RB20DET downpipe and turbo downpipe diatmeter is? Also is there any aftermarket downpipe/dump pipes available?

Tony

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WDRacing
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There are a few aftermarket downpipes available, I had a RS*R on my Skyline. But Anyone can make you a custom 3'' Downpipe. The dumpipe from the turbo is about 2.5 IIRC. I have one in storage, But it doesn't get shipped to my new house till Feb some time, I'll check then if your still interested. The stock dump pipe works just fine with a 3'' downpipe. Since the stock turbo isn't good past 15 psi for great lengths of time anyway.

WD
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