Intercooler Wash

[k-huevo]

Because the crankcase vents into the intake system, crankcase vapors leave oil deposits in the intercooler; this film of oil interferes with the transfer of charge air heat. To keep the charge air cooler performing at high levels it should be cleaned periodically. Acetone is a relatively safe solvent that leaves no residues and is an excellent de-greaser. Performing a “wash” of the intercooler’s insides, requires some way of covering the end tank openings; one way is to use latex gloves folded over the openings with rubber bands securing the seal. I use OEM end tank plugs and plastic bags to close off the ends.
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To clean: cover one end and poor a liberal amount of Acetone in the intercooler, cover the other end and rock the IC in all direction to give the internals a good wash, drain and rinse with more Acetone.
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[k-huevo]

Compressed air can be used to accelerate the drying process.
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The end tank bellows accumulate oil and should be cleaned also. Simple Green is a safe degreaser on rubber products (so is non-alkaline soap). A toothbrush will aid cleaning.
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Before putting the IC and bellows on the vehicle, clean the input and output duct edges with non-chlorinated brake cleaner or Acetone. The bellows will seal best on completely oil free surfaces.
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[scuderia]

great write up Keith