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Old 10-01-2005, 10:12 PM
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rsjohn
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Default Turbo question/problem

I was out in my mates 4x4 sapphire cosworth earlier tonight, when accelerating not at full boost, the turbo will suddenly start chattering and the boost gauge needle fluctuates. If you try and drive at 60mph in 5th on light throttle it also does this.

any idea what it could be??

the car is running stage 3 @24psi, the turbo is T3 is i think the bearings have gone as screams over 15psi!!!

i have tried disconnecting the amal valve but makes no difference.




John.
Old 10-01-2005, 10:58 PM
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Stavros
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conpressor surge, suprised it surges with a T3 tho, so maybe not
Old 11-01-2005, 11:01 PM
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anyone else had or know of this problem??




John.
Old 11-01-2005, 11:05 PM
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the way ya discribing sounds like surge


but not at that boost i dont think it would

if it screams like a howl then yes the turbos deffo needs looking at ( sounds cool though dont it )

good luck eitherway
Old 11-01-2005, 11:25 PM
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Christian and Beccy
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I would say almost certainly Compressor Surge.

Could be a restriction in the exhaust? Maybe one of the boxes has collapsed?

If its surge it will occur at around 19psi.
Old 11-01-2005, 11:29 PM
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GARETH T
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i think the bearings have gone as screams over 15psi!!!
i think thats someone to sort first
Old 11-01-2005, 11:31 PM
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Christian and Beccy
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Originally Posted by GARETH T
i think the bearings have gone as screams over 15psi!!!
i think thats someone to sort first
Maybe its spat a couple of Turbine Blades out?

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Old 12-01-2005, 05:37 PM
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rsjohn
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So whats compressor surge????



John.
Old 12-01-2005, 05:47 PM
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wayniac
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Originally Posted by rsjohn
So whats compressor surge????



John.
such an easy question to ask.... and a tech reply in archive isn't there ?
Old 12-01-2005, 05:55 PM
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https://passionford.com/forum/viewtopic.php?t=34511

Old 12-01-2005, 09:07 PM
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rsjohn
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So basicly i need a new turbo???




John.
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