Williams 325 Turbo poss issue

jrudge

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In the summer my Williams 325 2008 had a turbo whistle that came and went twice for a few minutes and never heard again.

The noise was not typical so I called Williams who said either clean the blades to get rid of any calcium build up or buy a new on for E2500!

As it stopped I did nothing and put it down to a trip i had in some very rough water getting back to the boat.

The other day I had the rib out for the first time in 6-7 weeks.

It ran ok but only upto 5000 RPM. I assumed the turbo was sticking. Ran it for 3-4 mins and it cleared and all was well ( and no whistling). For the next week it was fine and ran normally.

I am wondering if there is anything practical I can do at this stage other than wait for it to go wrong!

I am not sure if there are any bearing i can lubricate etc.

The 5000 rpm issue however could have been nothing to do with the turbo at all and some electrical connection that dried out as it warmed up etc, or just something that happened and wont come back.

At present there are nil issues other than the possible symptoms above - it develops full power and runs fine.
 
Needs a blast to minimise carbon deposit build up on the turbo .
Pootling will shorten the life .
In the mean time ,Oil change , have a look at increasing the frequency ? BTW , is it the correct spec ? ,I mean did you buy it ,or just pay the engineers ( Spaniard s ?) bill ? I,am thinking wrong/ 8hit - spec oil caking up the turbo bearings

On another point do you still have to fresh water rinse the engines these days ,or are they indirectly cooled by a second circuit ?
In which case there’s a heat exchanger pickling in brine somewhere in there ? or an anode wearing away - Sod’s law out of sight :disgust:

Just asking because back in my jet ski racing days , they were 2 stroke direct cooled rotax engines .
I suspect they have 4 stroke indirect cooled jobbies these days ???
 
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