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Alan L Alan L is offline
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Join Date: Apr 2006
Location: New Zealand
Posts: 3,247
I'm glad you raise the point about valve overlap. This was the problem I had earlier - apart from lots of leaks. I had my compressor hooked into the system via as per pic, to generate enough air to create a pressure. Apart from all the leaks - air pissing out in many places - open hoses, cracked injector blocks etc - air was exiting the exhaust. The only conclusion I could come to was that the cams had some overlap. Don't know what cams it has - but if they have overlap I can't see how it will hold a static pressure. I have removed the exhaust for this test and made a blanking plate to go over turbo outlet. There is still no static pressure, but a modest flow of gas from a bottle is required to very quickly bring pressure up on my test gauge - but not the boost gauge.
Do stock 930 cams have overlap?
Old 04-16-2008, 12:00 PM
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