stock rb25 turbo

Discuss the RB20, RB25 and RB26 series engines.
jingledic
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Joined: Wed Sep 24, 2008 6:27 pm

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around how many pounds do the max out at on a rb25


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Coolwhip
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Joined: Fri Feb 06, 2004 7:29 am
Car: RB26 Raw Brokerage War Machine
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its been covered a million times...

14psi is max for effiency. But they have failed at all boost pressures up to that point even at factory levels.

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whitebride91
Posts: 45
Joined: Sun May 17, 2009 12:28 pm
Car: 91 240sx fastback

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i know this thread is old but i have one of these and does anyone have any specs on it. AR? Trim? i only know the limit before it breaks and that its a ceramic bearing turbo.

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RustspecS13
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Joined: Sat Sep 08, 2007 5:30 pm
Car: '74 260z and '88 300zx turbo

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Are you going to put it on a KA or something? The most common failure point for RB20 and 25 turbos is 13psi and up. My rb20 turbo stock boost is 10psi and I'm not even going to up the boost.

I would just get a l28ET or VG30ET turbo. Its pretty much the same size as the rb25 turbo except it has a steel exhaust wheel and a larger turbine housing. Its still a t3 flange.

~Alex

Joe
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Joined: Sun Feb 09, 2003 8:29 pm
Location: Phoenix, AZ

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jesus SEARCH SEARCH SEARCH

anything over 12psi makes it a timebomb.


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