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Suspected Wastegate Problem Help Please.

rockabilly

By rockabilly,
in Engines & Forced Induction

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rockabilly Rising Star

rockabilly

Posted
Posted

hi guys, well my rb26/30 has done over a 1000 miles now no issues, went to castle donnington for a trackday, set car up for 2 bar boost gt35r 1.06 rear, as supplied by extreme turbo manifolds.. no probs all day did about 100 miles on track open pit lane etc, then a boost pipe let go, slipped through the clip,the one that goes onto the intercooler on the left side. anyway fitted it back on and no boost?.checked all the pipes and the turbo to make sure we have not lost a wheel and cant find the problem..car runs a tial 44mm external wastegate plumbed back into the downpipe, i think leigh said it had a 7psi spring fitted, its been ok but now the car only makes .3 bar at 7000 rpm..runs superb and as been to 7500rpm several times today lol/. any idea,s guys as to wether wastgates can stick open??. bernie

Strik3r Experienced

Strik3r

Posted
Posted

also do the obvious - check your intake for blockages / leaks.. Could have sucked up some crap thats blocking up your air filter and not allowing enough air through to generate boost. Although BOV/wastegate definately more likely.

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