ESSENTIAL CHECKPOINTS

1. FRONT- END WEAR

One well- known area of concern for any water- cooled Porsche of this era is damage to the radiators in the car’s nose. Typically, leaves and general road detritus enters via the intakes and gets lodged against the rads, where if left to rot will then corrode the radiators. Expensive.

2. BORE ISSUES

Damage to the engine’s bores, whether by scoring or them turning ovoid and even cracking, is one of the 996/ 997’ s weaknesses. Lots of theories abound as to why this should happen, but it’s wise to get any potential purchase inspected with a borescope before you buy. Undesirable noises from the engine at idle can be an indicator, too, although most flat- sixes are a bit noisy with age.

3. THE IMS

The Intermediate Shaft Bearing was a constant thorn in Porsche’s side during the lifetime of the 996 and Gen 1 997, only disappearing when the all- new MA1 DFI engine was released in 2008. Porsche changed the design repeatedly throughout production, and today you have the choice of replacing like- for- like, or fitting an upgraded unit, with ceramic and independently oil- fed versions available.

4. SUSPENSION

With its complex multi- link rear suspension and beautifully resolved ride and handling, the 996/ 997 has much to lose by wear in this department. While springs and dampers aren’t especially expensive, the lower suspension arms have an integral bush and replacing all four is £ 1000 in parts alone. For a complete rebuild reckon on £ 5000.