Boost Problem

Discuss the RB20, RB25 and RB26 series engines.
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Chaos the Xile
Posts: 789
Joined: Thu Feb 09, 2006 4:56 pm
Car: 1974 Datsun 260Z

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On my RB25, I am getting like no Boost when you get on it you hear the wastegate open up but then nothing... you have absolutly no power. I checked the lines on the solinoid, and the wastegate itself and dont see any breaks or bends in the lines, or on the solinoid itself... any help would be great!

I have a AVCR that is on stock settings. 20% Duty Cycle, 50% boost pressure. I have a GT35R turbo, so I you think It may be the settings let me know what to change them to... thatnks.


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Shocker
Posts: 2082
Joined: Sun Aug 01, 2004 2:40 pm
Car: 89 240sxHB rb26/30

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whats the spring setting on the wastegate? did you accidently buy the 3 pound one?

gawdzilla
Posts: 2028
Joined: Sat Sep 18, 2004 11:51 am
Car: none

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exhaust is probably forcing your wastegate open...

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Chaos the Xile
Posts: 789
Joined: Thu Feb 09, 2006 4:56 pm
Car: 1974 Datsun 260Z

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no its a 5 pound spring, and it never use to run like this... running like an old woman in a wheelchair. I don't know I triple checked all of the hoes, **** its just not boosting!

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USMCgetsome
Posts: 2030
Joined: Wed Apr 14, 2004 7:38 pm
Car: OWN S13.5 RB25DET/2003 G35
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check your bov. then check the waste gate line to the avcr and then check the intercooler piping. Also run the engine and see if the turbo is spooling.

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Chaos the Xile
Posts: 789
Joined: Thu Feb 09, 2006 4:56 pm
Car: 1974 Datsun 260Z

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actually the screw that goes into the top of the the BOV is stripped. So I don't know if that will cause any problems????

Joe
Posts: 6511
Joined: Sun Feb 09, 2003 8:29 pm
Location: Phoenix, AZ

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Chaos the Xile wrote:actually the screw that goes into the top of the the BOV is stripped. So I don't know if that will cause any problems????
um yes

you basically have a giant hole in your intake piping now.

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Chaos the Xile
Posts: 789
Joined: Thu Feb 09, 2006 4:56 pm
Car: 1974 Datsun 260Z

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huh... ok so I guess its new BOV time then, damn! I just recirc'd this ***** too! Well lets prey that is the problem, and all will le well after that!


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