built rb20 questions

Discuss the RB20, RB25 and RB26 series engines.
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turbosteve
Posts: 10
Joined: Sun Jul 12, 2009 5:44 pm
Car: 89 240sx RB20DETT

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Plain and simple rb20 with lotsa rb26 parts on it. Only stock parts are crank cams rods fuel rail and fpr and intake manifold. Now I got rb26 twin turbos on it and I'm pushing 20lbs seems fine to me but still runs rich. It could be cuz its tuned for sea lvl and I'm at 7k feet. So my question is. If I do decide to just pull the wastegate hoses and blow a turbo will turbo shread and force metal into engine or just break every fin on exhaust side? I don't care about blowing turbos I do t want the engine to be hurt.


Yellow4g63
Posts: 3718
Joined: Mon Jan 20, 2003 6:07 pm
Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock
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I would go with plan B. Tune the car at your altitude so you can enjoy the car. Get a AEM S2, Haltech ect and tune it or take it to a tuner that can tune one of those.

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turbosteve
Posts: 10
Joined: Sun Jul 12, 2009 5:44 pm
Car: 89 240sx RB20DETT

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I'm ordering a aem wideband o2 to control the running rich issue. I guess I should a titled it what happens to rb26 twins when they pop?

Yellow4g63
Posts: 3718
Joined: Mon Jan 20, 2003 6:07 pm
Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock
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it's the exhaust blades that take a crap.

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turbosteve
Posts: 10
Joined: Sun Jul 12, 2009 5:44 pm
Car: 89 240sx RB20DETT

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OK so its not that bad then. All the information I gathered made me think the compressure blades blow up and throw metal into engine. So pretty much won't boost afterwards. But still drivable right?

Yellow4g63
Posts: 3718
Joined: Mon Jan 20, 2003 6:07 pm
Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock
Contact:

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Yeah it will be N/A at that point.


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