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Me like track days
Craig 930 RS's Avatar
Join Date: Sep 2003
Location: Kirkland, WA
Posts: 10,205
Question If this hose split......specifically, what'd happen?

I have a pretty good understanding of the 930 systems, but if this curved hose:

were to split or leak, exactly what would occur?
(Old pic, pre rebuild)

Hose is fatigued at the top join area and almost split through -

- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 11-09-2006, 06:00 PM
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rsrfan's Avatar
Join Date: Jun 2004
Location: Siesta Key, Florida
Posts: 1,237
If you are talking about the hose going from intercooler to the recirculating valve, failure of the hose MAY cause stall of the turbo compressor wheel during shifts leading to premature turbo failure. Your set up is different than most because of your unique intake tube routing.

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Old 11-09-2006, 06:33 PM
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beepbeep's Avatar
Join Date: Jun 2001
Location: Sweden
Posts: 5,688
If you wonder about thick rubber hose, nothing serious would happend. You would have vakuum leak off boost and boost leak on boost. idle revs would soar and you would run lean on idle.

If small hose was leaky it would render BOV valve unoperational, leading to sluggish boost buildup after each shift. Impeller damage due to inop BOV at your bost levels is unlikely. But you would have hight boost peaks in intercooler between shifts which could blow off a hose or two.

Thank you for your time,
Old 11-10-2006, 05:40 AM
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