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[2001 V70 2.4T] Repairing fresh air hose from MAF to Turbo, Volvo part 30680446

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
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EngineeringBloke
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Re: [2001 V70 2.4T] Repairing fresh air hose from MAF to Turbo, Volvo part 30680446

Post by EngineeringBloke »

I had a couple of thoughts about this.

1. I would try to minimize the extent that the hose adapter projects on the inside of the air intake tube so that airflow is minimally impeded.

2. But more importantly, I had thought about using two nuts on the adapter thread to hold the adapter against the intake pipe wall from both sides (outside and inside, not across the whole pipe :)), but I must strongly warn against this. Any nut inside the pipe would be past the intake air filter, and if it came free, it could do a lot of damage to the engine, after passing the throttle, it could get into a cylinder and damage valves and the piston. It would also pass through the turbo and would damage the intake turbine blades.

I don't think I would even trust locktite to secure against this on the inside of the pipe. The risk and consequence is too high.

However, you could place a nut on the outside of the pipe to set the adapter position so that it projects into the pipe minimally. Use locktite to secure the nut's position, and the glue to hold the adapter against the pipe. As the pipe is at a lower pressure than atmosphere (in front of the turbo boost), there should be no air pressure to push the adapter out. Just try not to wiggle the hose attached to it much.

Good luck and let us know how it works out.
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prwood
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Re: [2001 V70 2.4T] Repairing fresh air hose from MAF to Turbo, Volvo part 30680446

Post by prwood »

Turbo is back - I pulled a fully intact pipe from an XC70 at the junkyard this weekend for $10. Hooked up the vacuum hose and reconnected the TCV and the turbo is boosting properly now. Phew!
Cars I've owned:
- 2015 to current: 2001 Volvo V70 2.4T
- 2007 to 2015: 2002 Subaru Legacy L Wagon
- 2003 to 2016: 2001 Toyota Corolla LE
- 1999 to 2003: 1994 Toyota Camry LE
jonesg
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Re: [2001 V70 2.4T] Repairing fresh air hose from MAF to Turbo, Volvo part 30680446

Post by jonesg »

prwood wrote: Mon Oct 22, 2018 7:04 am Turbo is back - I pulled a fully intact pipe from an XC70 at the junkyard this weekend for $10. Hooked up the vacuum hose and reconnected the TCV and the turbo is boosting properly now. Phew!
God bless the salvage yards.!
XC70Rider
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Re: [2001 V70 2.4T] Repairing fresh air hose from MAF to Turbo, Volvo part 30680446

Post by XC70Rider »

Glad you got it repaired at that price!

Does the PTC on your V70 have 1 or 2 hoses connected to it? My 2007 XC70 only has I hose connected to the PTC coming from the large PCV hose. The top port of my PTC has nothing connected to it.
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prwood
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Re: [2001 V70 2.4T] Repairing fresh air hose from MAF to Turbo, Volvo part 30680446

Post by prwood »

XC70Rider wrote: Mon Oct 22, 2018 9:19 am Glad you got it repaired at that price!

Does the PTC on your V70 have 1 or 2 hoses connected to it? My 2007 XC70 only has I hose connected to the PTC coming from the large PCV hose. The top port of my PTC has nothing connected to it.
30680446-MFG300-3.png
30680446-MFG300-3.png (129.85 KiB) Viewed 243 times
Mine has a small hose to the Turbo Control Valve attached to #1, a medium hose from I'm-not-sure-where (cooled air to throttle pipe, maybe?) attached to #2, and the big hose to the PCV breather box attached to #3.
Cars I've owned:
- 2015 to current: 2001 Volvo V70 2.4T
- 2007 to 2015: 2002 Subaru Legacy L Wagon
- 2003 to 2016: 2001 Toyota Corolla LE
- 1999 to 2003: 1994 Toyota Camry LE
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