ssulb Posted April 13, 2017 Share Posted April 13, 2017 I know with Subaru's other engines with timing belts, it doesn't hurt to replace the water pump when doing the timing belt service. On the 3.6R, there is obviously no timing belt so the access to the water pump isn't very convenient with service intervals. Would anybody happen to know the service interval for the water pump on a 3.6R? Tried looking everywhere, online, manual and nobody has the numbers. Link to comment Share on other sites More sharing options...
YeuEmMaiMai Posted April 13, 2017 Share Posted April 13, 2017 you replace it when it fails Link to comment Share on other sites More sharing options...
ssulb Posted April 13, 2017 Author Share Posted April 13, 2017 How can you tell if they fail other than the obvious lack of cooling. They are enclosed inside the engine timing cover. Some water pumps leak when they need to be replaced, but this one would just leak into the engine oil right? Link to comment Share on other sites More sharing options...
FLlegacy Posted April 13, 2017 Share Posted April 13, 2017 If it does leak it will be slight weep and would easily show up in the oil, long before a catastrophic failure. Sent from my SAMSUNG-SM-G920A using Tapatalk Link to comment Share on other sites More sharing options...
ssulb Posted April 13, 2017 Author Share Posted April 13, 2017 At what millage do you think it would happen. It is sort of hard to tell. I am at 150,000 miles already, just making a list of engine work I plan to do over the summer. Link to comment Share on other sites More sharing options...
FLlegacy Posted April 13, 2017 Share Posted April 13, 2017 No magical mileage to change it out at. It's a crap load of work though. I would wait until I had to, then I would buy a jdm 3.6 and put that in. Sent from my SAMSUNG-SM-G920A using Tapatalk Link to comment Share on other sites More sharing options...
Humble Rumble Posted April 14, 2017 Share Posted April 14, 2017 No magical mileage to change it out at. It's a crap load of work though. I would wait until I had to, then I would buy a jdm 3.6 and put that in. Sent from my SAMSUNG-SM-G920A using Tapatalk Isn't there no such thing as a JDM 3.6R? Or did they get the 3.6R in the Outback only? 2012 Legacy 3.6R Build Thread 5th Gen Legacy BM/BR Body Kit Compendium Thread Link to comment Share on other sites More sharing options...
Timothy.B Posted April 14, 2017 Share Posted April 14, 2017 I asked the techs when I first bought my 3.6R and their comment was, it's typically best to just wait until they fail to replace them on this engine rather than doing it at an interval. It's usually more harm than good to try and do them. Timothy.B's 2011 LEGACY 3.6R Link to comment Share on other sites More sharing options...
FLlegacy Posted April 14, 2017 Share Posted April 14, 2017 Isn't there no such thing as a JDM 3.6R? Or did they get the 3.6R in the Outback only? You might be right, I was thinking of the 3.0 h6. In that case get a low mileage used engine. Sent from my SAMSUNG-SM-G920A using Tapatalk Link to comment Share on other sites More sharing options...
YeuEmMaiMai Posted April 14, 2017 Share Posted April 14, 2017 How can you tell if they fail other than the obvious lack of cooling. They are enclosed inside the engine timing cover. Some water pumps leak when they need to be replaced, but this one would just leak into the engine oil right? typically they will leak at the bearing or at the gasket mating surfaces internal failure typically results in NO pressure in the system or a overheat due to lack of coolant movement. Link to comment Share on other sites More sharing options...
ssulb Posted April 14, 2017 Author Share Posted April 14, 2017 Thanks you all for the information. I will just leave it alone and monitor the oil. Link to comment Share on other sites More sharing options...
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