Thread: Project Crossfire - a Rotrex Supercharged Limited!
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Old Sep 28, 2010 | 12:41 AM
  #329 (permalink)  
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tighed1
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From: Sierra Vista, Arizona
Default Re: Project Crossfire - a Rotrex Supercharged Limited!
Originally Posted by Web 3.0
I have something really weird going on. I'm not making anywhere near the boost I should be making for the pulley size I have on the rotrex.

Yesterday, I ended up taking off all of my intake plumbing and putting just a filter on to get that run in with a pulley that should be making 15 psi or so.
My guess without knowing your setup...

My neighbor builds turbo set ups and one of his customers complained that he wasn't getting the expected boost. My neighbor and I took the car for a run and sure enough the boost was half of what it once was. After a look around we discovered that the customer took the screen "air filter" on the turbo inlet and folded it thus doubling the amount of restriction on the air intake. We removed the screen completely and went for a spin and sure enough the boost returned to expected levels.

So my guess is maybe you have restriction on the intake side. Remove all intake components and go for a spin, see if boost goes up.
 
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