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Join Date: Jan 2004
Location: West Des Moines, Iowa
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Hytem, if that's true it really changes the way I would drive the newer motors. Anybody else hear that you don't really have to rev the water cooled engines? Do you think the GT3 motor is different? Do you think Porsche engines are 'softer' now? If this is true it somehow makes me a little sad
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Old 02-23-2008, 10:36 PM
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I don't use my Boxster at high rpm the way I used my 911. The Porsche dealer told me I didn't need to do that with the Boxster. A mechanic told me to rev the 911 to 4000 rpm every time I drove it--which I did. It might have something to do with carbon fouling of the plugs. One thing I noticed about the SC is you don't want to idle it for more than a few minutes--or you have trouble restarting it.

What I don't know is about the later model 911s--especially the water-cooled. It's a good question.
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Old 02-24-2008, 12:35 PM
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Well I think I can dispel this "myth."

The newer engines are no different than the older ones in that you don't run them BELOW a certain RPM in each gear (check your manual). My 997 says no lower than 2000 RPM's in any gear above first, my 1966 911 requires no less than 2200 RPM's in any gear above 1st. ''

Bogging the engine down is what gives it premature death, that is what happened to the 3.4 in this post.

The whole "revving to 4000" thing that people were told is to clean out carbon, doesn't have much to do with the bottom end though. Even on the newer engines its nice to rev it up SOMETIMES but no need to do it all the time

Take away: all these engines have a similar requirement, don't under rev in any gear and bog the engine or lug it.

To the 3.4 owner with the bad engine: what oil change interval did you follow?
Old 02-28-2008, 03:09 PM
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The 2000 rpm lower limit in higher gear is standard for any manual shift car. I try not to drop below 2000 rpm in 5th gear. That's about 45 mph. The exception might be going downhill, in a low torque situation.
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Old 02-28-2008, 04:46 PM
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Hytem - no the case. In a Jeep with a 4.0 inline six, you can shift it all day long under 2,000 and it will pull. Its got low end torque. With a porsche you don't have low end anything. You MUST rev it or risk bottom end damage from the lugging.
Old 03-03-2008, 04:01 PM
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Bump for price reduction. Motor has been rebuilt by factory trained Porsche mechanic.

$7,500 install/exchange.
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Old 05-09-2008, 12:48 PM
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My 2000 model has almost 90k miles now and I drive the dog ***** out of it. It is meant to be driven hard and I don't hesitate to run it to 6 or 7k when the time is right. Ironically enough, it runs better now that I have begun to run it harder. I think it blew some carbon out. What a difference at idle. I change the oil every 5000 miles. I am curious as to what the highest mileage 996 and boxster motors are seeing now.
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Old 05-09-2008, 05:11 PM
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Old 05-09-2008, 05:11 PM
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