Macster

You're willing to condemn Porsche engineering on the basis of some Internet pseudo science?

The cooling system in these engines is based on Porsche's F1 engine technology a cross flow system specifically designed to eliminate hot spots.

A few engines less than a handful suffer bore scoring though whether this was the initial problem or a side effect of something else -- someone posted a pic of his engine that had suffered some kind of cylinder/piston failure and the oil jet that is supposed to shoot a stream of cooling oil to the piston (word is the oil reduces piston crown temp by 50C) -- had a piece of metal swarf in it -- IOWs the oil jet was blocked -- and people are willing to slap on all kinds of goofy "fixes".

As an aside, I remember coming across a owners running report in one of the UK car mags about a Cayman that was found to have "bore scoring" based on symptoms -- I forget now what they were -- and confirmed by bore inspection.

The owner decided to run the engine until it needed to be fixed. He even tracked the car. Some time later the "bore scoring" symptoms were gone and the engine apparently was in fine health.

With the low temp t-stat apparently the owners are willing to run the other 5 cylinders too cold (along with the main/rod bearings) in hopes of saving the one cylinder that is supposedly running to hot.

This is sad.

Spokane5150

Macster - The mind of reason.

GSIRM3

Nope. You need to check your sarcasm meter. See post #5 where I agreed with Spokane that installing the low temp T-stat was a bad idea.