Many prefer 3.5mm - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Many prefer 3.5mm
Posted by BlaaSaab [Email] (more from BlaaSaab) on Fri, 21 Aug 2009 12:59:35
In Reply to: '01 Viggen vacuum line size, ViggIN, Fri, 21 Aug 2009 12:23:20
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I'm not sure what exactly you mean by "narrower," but a lot of people find that 4mm vacuum hose doesn't hold very tightly to the barbed fittings. Also, it seems that if you buy silicone hose, 3.5mm gives you a slightly thicker wall. I had no problems slipping it onto the connectors with a bit of soapy water.
Worth pointing out is that there are some special vacuum lines on T7 cars. The ones to/from the boost pressure controller down near the turbo are larger, while other ones that are part of the PCV and brake booster systems are preformed hard plastic lines. Those can be ordered from site sponsors if that's what you're trying to replace.
posted by 216.37.1...
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