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Puny Bird
Join Date: Nov 2002
Location: Port Hope (near Toronto) On, Canada
Posts: 4,566
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To me 'lugging' the engine is driving below 3000rpm
This is bad for an aircooled engine because the fan needs to be up to speed to push enough CFM of air. Accelerating at 2000rpm creates a huge amount of heat that can not be cooled, uphill lugging and cylinder head temps go through the roof. Heat cycling the engine like this causes head damage, increased wear from heat cycling and the breakdown of oil.
In traffic when rpms drop to 3K you really should be gearing down to accelerate.
Not sure if this would cause the bearing shuffle.
Now if the turbo is hammering the boost on at a certain level then that could be the source of the bearing shuffle.
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'74 Porsche 914, 3.0/6
'72 Porsche 914, 1.7, wife's summer DD
'67 Bug, 2600cc T4,'67 Bus, 2.0 T1
Not putting miles on your car is like not having sex with your girlfriend, so she'll be more desirable to her next boyfriend.
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