NotHerDecision
Well-Known Member
- Jun 28, 2016
- 2,173
- Boat Info
- 2001 Sea Ray 460 Sundancer
2014 Seadoo 155 LTD
2105 Seadoo 130 SE
2013 Mercury Dinghy
- Engines
- Cummins 6CTA 8.3L
My only additions to Franks comments is This.
The proper servicing interval is 2-3 years. There are a few of us who have tested this theory to see what they look like after time and 2 years is perfectly fine and 3 seems to be pushing it.
Secondly, Cummins has switched aftercooler manufacturers again, the new ones look different for the 6CTA and are manufactured by Mota and this is all clear on Seaboard Marine’s site but worth nothing there are now 3 generations of aftercoolers for the 6CTA and 480ce
Additionally, the new units have water discharge ports available for the condensate that forms in the aftercooler. There is not a clear consensus on this discussion as to what side or both should have these ports or if you need them at all. The theory as mentioned above is after idle info back to the slip and the engine cools, condensate can form in the bottom of the aftercooler which can get ingested on the next run. Varying degrees of thought go into this theory but personally I don’t see this, I think it’s more likely in a colder climate. I keep my bilge heated so less likely the inside of the cooler will be colder then the outside which is the basis of condensate.
Lastly, on servicing the aftercoolers. I heard some are sanding the surfaces. I don’t recommend this but cleaning and using aluminum black to restore the surface works very well before coating with metalube.
The proper servicing interval is 2-3 years. There are a few of us who have tested this theory to see what they look like after time and 2 years is perfectly fine and 3 seems to be pushing it.
Secondly, Cummins has switched aftercooler manufacturers again, the new ones look different for the 6CTA and are manufactured by Mota and this is all clear on Seaboard Marine’s site but worth nothing there are now 3 generations of aftercoolers for the 6CTA and 480ce
Additionally, the new units have water discharge ports available for the condensate that forms in the aftercooler. There is not a clear consensus on this discussion as to what side or both should have these ports or if you need them at all. The theory as mentioned above is after idle info back to the slip and the engine cools, condensate can form in the bottom of the aftercooler which can get ingested on the next run. Varying degrees of thought go into this theory but personally I don’t see this, I think it’s more likely in a colder climate. I keep my bilge heated so less likely the inside of the cooler will be colder then the outside which is the basis of condensate.
Lastly, on servicing the aftercoolers. I heard some are sanding the surfaces. I don’t recommend this but cleaning and using aluminum black to restore the surface works very well before coating with metalube.
