Hi Bill,

my experience was to ruin a perfectly good engine because the waste gate was stuck causing over pressuring at higher revs. Check for freedom of movement of the operating flap. You can do this by applying air pressure to the bellows by removing the outer end of the small air hose. This will check the bellows at the same time. Or remove the circlip holding the operating rod to the waste gate arm and check for free movement of the arm. You should be able to flick it back and forth with your finger tip. If that is OK I would not see how higher revs would cause any damage. However I would never run my engine constantly at peak revs. My diesel utility vehicle does 1500 rpm at 100 kmh, our legal speed limit

Kind Regards

Danny

SM 299

Ocean Pearl