Unhappy Viggen part 2 - The Saab Link Forums

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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 07-18-2007, 08:58 AM   #1
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Unhappy Viggen part 2

So I started a new thread because the plugs are taken care of. I found a gapper that I had in an old tool box. It had 1.02mm so I used that.

Went for an adaption run and saw a nice 17psi then a pop and car died. Ruh-roh. Pop the hood and the bpv hose was blown clean off. Popped it back on and all was well.

I knew what had happened. Its happened before. My delivery pipe nipple caves in on itself under high boost and allows the hose to come off. THis time I took a pic to show you. IN the past while its hot I insert the handle of a screw driver to reform it and allow it to cool. But this seems to keep happening. The car is sure boosting good though

I wonder if there is anything I can do, even tempted to do an aluminum delivery pipe. This is annoying.
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Old 07-18-2007, 09:02 AM   #2
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So my first idea was to the black nipple off the DP is so smooth, perhaps scuffing it up with a 60gritt sanding block would give it more bite to have the hose stay on.
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Old 07-18-2007, 09:19 AM   #3
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Super glue.

Kidding, but what about cutting a little piece of aluminum tubing and glueing it inside that nipple?
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Old 07-18-2007, 09:21 AM   #4
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Find a metal bushing to insert in the tube. Then when you clamp it down it won't collapse.
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Old 07-18-2007, 09:24 AM   #5
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Find a metal bushing to insert in the tube. Then when you clamp it down it won't collapse.
Can that get sucked in though? That sounds kinda risky.
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Old 07-18-2007, 09:25 AM   #6
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Super glue.

Kidding, but what about cutting a little piece of aluminum tubing and glueing it inside that nipple?
Might work, just worried about it hurting flow.
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Old 07-18-2007, 09:26 AM   #7
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What he said ^^^^^Find a piece of pipe (aluminum, SS, etc) that will slide in that opening super tight-maybe glue. Cut to size and it will not collapse anymore. Try to find a very thin piece and make sure it does not go into the delivery pipe. Then clamp with constant torque clamp.
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Old 07-18-2007, 09:32 AM   #8
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or you could plug the BPV right in, instead of using a silicone or rubber tube there (not sure if you are or not). it would be harder to remove it but it would keep the nipple thingie from collapsing.
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Old 07-18-2007, 09:48 AM   #9
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Can that get sucked in though? That sounds kinda risky.
Epoxy
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Old 07-18-2007, 09:53 AM   #10
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Epoxy is no joke.

I would think it would be easy enough to find a tube or something to put in there..
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Old 07-18-2007, 09:58 AM   #11
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Why not heat up the nipple then quickly put the BPV back on, like to melt them together? Or heat up the outside of the BPV at the connector to the intake.
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Old 07-18-2007, 09:59 AM   #12
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How about some PVC with PVC cement? That ought to hold up just fine.
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Old 07-18-2007, 10:02 AM   #13
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I can't believe that you don't have a SS or some kind of metal delivery pipe especially with your mods on your Viggen.
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Old 07-18-2007, 10:08 AM   #14
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Can that get sucked in though? That sounds kinda risky.
I believe if you look inside the tube there is a step to keep anything from goin inside the tube.
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Old 07-18-2007, 10:42 AM   #15
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I can't believe that you don't have a SS or some kind of metal delivery pipe especially with your mods on your Viggen.
Aluminum/SS delivery pipes have been shown to cause more damage than good up to/around 400hp where the airflow becomes a restriction. Until that point, the plastic stays cooler than aluminum/SS and as such performs better.
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Old 07-18-2007, 10:48 AM   #16
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I can't believe that you don't have a SS or some kind of metal delivery pipe especially with your mods on your Viggen.
NOOB

The stock delivery pipe is good to 400hp.
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Old 07-18-2007, 10:49 AM   #17
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or you could plug the BPV right in, instead of using a silicone or rubber tube there (not sure if you are or not). it would be harder to remove it but it would keep the nipple thingie from collapsing.
Hmm, is that possible? That could solve the problem. I am using blue Silicone right now I got from Nick T.
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Old 07-18-2007, 10:50 AM   #18
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How about some PVC with PVC cement? That ought to hold up just fine.
PVC is thick and would certainly cause an air restriction. The DP outlet is only about 1-1.2" in diameter.
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Old 07-18-2007, 10:51 AM   #19
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Why not heat up the nipple then quickly put the BPV back on, like to melt them together? Or heat up the outside of the BPV at the connector to the intake.
I have tried heat to the outlet of the delivery pipe and then expanded it to allow it to cool. But once it gets hot again it deforms.
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Old 07-18-2007, 10:54 AM   #20
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i could see thiss as being really anoying lol... give nick at gs a call get a nice ss or aluminum delivery pipe for it...
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