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Old 04-02-2014, 09:40 AM   #7
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 8,117
Originally Posted by ronlord View Post
The after cooler issue is unique to the 3126, not the 3116. The 3126 uses raw water cooling for the aftercooler, the 3116 uses engine coolant. This change provided for more HP, but also increased the risk of corrosion.
Cat is very specific in their manuals about cleaning the after coolers on both 3126 and 3116. On the 3116 the after cooler has little issue on the water side as you correctly point out due to being JWAC. Both can oil foul on the air side especially when run at low RPMs for prolonged periods.
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