Tech Tip- Slipping Boost Hoses

[PeterT]

Lately we have had a number of vehicles in our installation department that have experienced problems with a loss of boost due to slippage or complete loss of connection of the boost hoses. This is not just on those vehicles with aftermarket enhancements, but also on vehicles that are stock, sometimes brand new!

I thought it might be helpful to offer a tech tip for those that experience this problem. If a hose joint has come loose on your truck, remove the silicone connecting hose and the adjoining tube from the vehicle. Clean any oily residue from the hose and the tube with a non-oil-based cleaner such as acetone. An oil based cleaner such as solvent will leave an oily residue which can allow the slippage to occur again. Rough the surface of any painted components with sandpaper before reassembling. On particularly troublesome hose joints, a coating of Gaskacinch or weatherstrip adhesive may be helpful, although this should be considered a last resort, since you would most likely destroy the hose the next time it needed to be disassembled.

It is also a good idea to check all the hose clamps at each hose joint on occasion. The hoses can take a set and the hose clamp can wind up somewhat loose on the hose.

Hope this is helpful to someone who has had this problem before.

Peter Treydte
Director of Technical Communications
Banks Power

 

[BigDaddy]

PeterT,
Thank you for the very good advice. If I may add one additional point: when tightening/torqing hose clamps use a small rubber mallet, tap the clamp around the circumference, and retighten. This will evenly distribute the torque around the clamp. If tightening to a specific value, continue the procedure until the torque required stabilizes.


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[Chad Sheets]

One more thing, if you sand something on/near the intake system BE CAREFUL. That kind of debris is what causes ring and valves to loose their seat.

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Always ready to help!
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[fmj]

When my truck was new, I found the clamps loose. I checked them because of information off TDR. They kept loosening. I finally torqued them to the manual and put on jam nuts. I still check them at oil changes by holding the clamp nut so it doesn't move and loosen the jam nut. Then retorque to specs, and I found that they haven't been a problem since, and have held torque. It's something worth trying for ease of mind.

 

[John]

I may be wrong Peter however, I believe if you use acetone (or equivalent) on the "rubber" hoses you will start a premature degradation process (maybe not with your blue silicone turbo hoses though).

 

[Jim Brewer]

Here's another suggestion... I had my turbo housing to intercooler coupling blow off several times on a trip before I busted the stock clamp tightening it too much. I bought a large diameter screw type hoseclamp (the type with slots in the band). It's held fine every since.

My theory is that the thicker part of the stock clamp band (under the screw) isn't flexible enough to firmly clamp the rubber. I had to fix mine 4 times before I resorted to the cheap hoseclamp, and twice it had just slipped off right under that area.

FWIW.....

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