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Join Date: Dec 2002
Location: Long Beach, CA
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Source for turbo hoses
The connector hose to the throttle body for a 3.0 Turbo is NLA from Porsche. Our host doesn't list it either. Has anyone tried the aftermarket silicone hoses for this application? The original part appears to be a fabric reinforced neoprene hose. The dimensions are 40 mm i.d. x 80 mm long. This size doesn't appear on any of the on line sources for silicone hoses, either.
Any suggestions? Here's a photo. The hose is the stubby wide one, with the steel mesh screen in the opening. 
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08-12-2006, 03:49 AM
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Still Doin Time
Join Date: Nov 2004
Location: Nokesville, Va.
Posts: 8,225
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Google 'silicon hose'
There are a few co's that only manufacture silicon-based hose. Most offer temp and color choices in just about any size you need
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08-12-2006, 06:31 AM
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08-13-2006, 04:40 PM
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The silicon hose is pretty flexible. A 2" hose will probably fit. I might even have a piece lying around to try. I'll check tonight.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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08-14-2006, 04:35 AM
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I converted the i.d. wrong. It is 3.150", which is close to 3.125", not 2.125". Sorry.
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08-14-2006, 04:43 AM
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Crotchety Old Bastard
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The metric ID is 80mm. 3" might work if you lube it up good.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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08-14-2006, 09:25 AM
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I may have a piece of 3" hose, I have alot of pieces left over from my current project. How long a piece do you need?
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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08-14-2006, 09:53 AM
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08-14-2006, 10:37 AM
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I've yet to find any reasonably priced silicone hoses. They seem to be about $20 and up. If I have a piece, it's scrap for me.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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08-14-2006, 10:48 AM
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I've got a piece of 3.125" ID, 3" long hose, do you want it?
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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08-14-2006, 03:24 PM
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I just went down to NAPA and got some rubber hose couple dollars a foot or something like that
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08-14-2006, 04:22 PM
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08-15-2006, 01:45 AM
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Thank you to David (125shifter) I found that Samcosport has metric silicone hoses at the 80 mm size.
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08-20-2006, 03:31 AM
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1979 Porsche 930 3.4
78 Porsche 911SC 3.0L, 3.3Turbo soon. 
