RB20 stock turbo identification

Discuss the RB20, RB25 and RB26 series engines.
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1sikS13
Posts: 1697
Joined: Sat Sep 16, 2006 9:58 pm
Car: 1992 S13 240sx

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got a used stock RB20 turbo...but it has no wastegate regulator or bracket...so i was looking on frsport and they have new ones on there but i dont know what the stock turbo is gt30 gt28 any help would be appreciated....also what is the stock wastegate spring rate?


DriftX
Posts: 375
Joined: Sat Apr 07, 2007 1:08 pm
Car: '89 240sx

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It is a t3 flanged t28, stock rb20 spring is set at 10-11psi and the stock rb25 turbo actuator will bolt on, but it's set to 7psi.

I'm sure someone on here has an oem actuator.

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1sikS13
Posts: 1697
Joined: Sat Sep 16, 2006 9:58 pm
Car: 1992 S13 240sx

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they have them on frsport.com im just debating which one to get some are universal but they are like 80 bucks for the actuator and 9 dollars for the bracket which i need both. and also can i turn tho housing to face a different direction to fit my KA or is this turbo the kind that wont allow that or can you do that to all of them......also where can i get a 6 bolt elbow to bolt to this thing....thanks again

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mello88
Posts: 611
Joined: Tue Jul 27, 2004 6:37 am
Car: s13

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I have a stock RB20 wg actuator and bracket if you want to buy. Not sure about the clocking, I think the stock turbo does not allow this but it's been a while since I looked at it.

For the 6 bolt, there are a few SSAC elbows on ebay, and also you can re-use the stock cast elbow outlet. I have a SSAC elbow you can use, or chop and reweld to your custom DP.

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1sikS13
Posts: 1697
Joined: Sat Sep 16, 2006 9:58 pm
Car: 1992 S13 240sx

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sent you an email...hit me back


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