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Old 07-19-2015, 04:56 PM   #1
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Charge Air Cooler Elbow

Well Thursday we were leaving in our Alpine for our second trip out in it. I hear a terribly load rushing air sound when applying the throttle. Turned around and went home. After looking around I find a rupture in the charge air cooler rubber elbow, picture below. I let the engine cool overnight and early in the morning had the 4” pipe removed with both the straight and elbow rubber fittings attached. Although the straight one is fine I am replacing it. The local Peterbuilt dealer had one that matched perfectly. The one I really need has to be ordered. I found several suppliers online. Can anyone help with one or all of the below questions.

1. Is there a preferred supplier for this part? Currently I am leaning to this one.
Intake Hoses, IntakeTubing, and Intake Clamps - Intakehoses.com Silicone Elbow 4" ID X 90 Degree - Gloss Black

2. I am replacing both fittings on the pressure side. Do I also need to replace the two rubber fittings on the suction side? One is close to the turbo and one is connects to the filter housing.

Thanks in advance for any replies.
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Rick T
2006 Alpine 34FDDS
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Old 07-19-2015, 06:08 PM   #2
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JMHO: A good clean up and visual inspection , will be all that's necessary, if you look inside the turbo inlet at the vanes and see no evidence of dust build up on them , you'll know that all the air reaching that point has been properly filtered, and there is no unfiltered air reaching the turbo & engine.

Link , and parts supplier look good.

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Old 07-19-2015, 06:46 PM   #3
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Do a search on this site--lots of discussion on which kind of pipe to buy and from where....Issue with many middle-years Alpines was use of a low temp turbo pipe {blue} vs the higher temp {orange}. Given that high pressure from the turbo is the usual cause for blown hoses, I would think that a visual inspection of the hoses on the filter side would be sufficient.
PS--not sure what temp black is but 350 degrees in the spec seems low??????
PSS--initial look on Amizon suggest 350 may in fact be the high temp type????? Would still look for orange/red vs blue. Dont believe the hoses are of the same design/material base on the low pressure/partial vacuum on the filter side of the turbo.
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Old 07-19-2015, 06:55 PM   #4
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If you can find new rubber elbows at a reasonable cost I would suggest changing since you will have the intake system apart, it seems like an opportune time. The rubber elbows will deteriorate over time and the last thing you want is on failing and getting a significant amount of dirt into the engine.
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Old 07-20-2015, 05:33 AM   #5
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I have a bit of trouble with the search tool for this forum. Just don't seem to get the results I am looking for. Maybe I am just not searching on the right key words. After a few more searches last night I did find an elbow that another poster found that looks like it might be a better choice. It is twice the cost but it's rated at 500f instead of 350f. I ordered it this morning.

Still considering whether to do the suction side as well.
Rick T
2006 Alpine 34FDDS
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