If I have about $100k to replace my 337, which should I buy and why?

[Roger]

One example:

Problem engines

Some engines use turbocharging to gain additional sea-level horsepower, rather than simply to maintain sea-level performance at altitude. Highly ground-boosted engines like the 325 hp TSIO-520 found in late-model T210s and P210s and many RAM-converted twins have a dismal record of making published TBO, much less going beyond it. The same is true of the 225 hp TSIO-360 in the P337.

http://www.avweb.com/news/maint/182808-1.html

[Ernie Martin]

The paper referenced above by Roger, written 15 years ago, calls the Continental IO-360-series engine "problem-prone". Is that still the case? Or did the VAR crank and other ADs resolve the weaknesses? I am under the impression that it is the latter, but I'm not certain.

Ernie

[bsbomber]

I have flown both the p and non-P TSIO 360's. To me the biggest difference is the P-model has a red line of 37", thus the extra 15 HP. You really must run the p-model 360's much harder. We all know what happens when you run a piston engine harder.