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> Compressor surge?
BudmannG
post Jul 5 2006, 09:13 PM
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What would case compressor surge?

I have gotten many answers. I was told it was because my bov is to tight? I have a rfl bov. I did not recieve said spring adjusting washers. So what would I use in place of these washers?

I am at wits end with this thing. I try to pull a wot and when I hit 12psi it burps out the turbo and then I get boost spikes up to 20 psi.


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99Spyder
post Jul 7 2006, 11:44 PM
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Well let's see... the Hallman has an internal spring that keeps the signal line closed until the pressure on the source side overcomes the spring pressure. If the spring had little tension the source signal should pass through to the actuator and open it up.

On the contrary, if the spring pressure is never overcome, the actuator will not receive a signal and you would run full boost. Using that logic I would have to guess that the MBC is not opening until really late or maybe not at all. Maybe your turbo loses efficiency around 24psi and can't build anymore boost.

I would pull the MBC off, dial it to the lowest boost setting, and see if you can blow through it. An air compressor with a pressure regulator set to about 15psi would work pretty well if you have it.


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