QSM11 Question

[George Forrer]

Hello all, I thinking of looking at a boat with a pair of QSM11’s. I have read Tony’s article about the propping of these motors. I won’t be able to check that till later in the process. So the question is the motors don’t quite have 2000 hours on them yet. They are year 2000 motors. If they have been over propped this whole time other then exhaust gaskets and manifolds is there any other damage done? Anything I should look at if I go to look at it? Thanks George

Topic

[Tony Athens]

Yes, if you plan on running above 1400-1500 ( wine & cheese speed) or so , and want any decent turbo /manifold life..

[George Forrer]

Thanks for the quick response. If I get to a sea trial just to make sure I understand. Run the boat at 2000 rpm’s and if the fuel burn is higher than 19 Gals an hour I need to make prop adjustments? Thanks George

[Tony Athens]

The QSM 11 as “base engine” is as tough as nails…………….The dry version marinization design ( or actually lack of) of the manifold & turbo is the weak point……………………..The base engine does not suffer..

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