How common is bore scoring 997?
How common is bore scoring 997?
Bore scoring isn’t a problem for the direct fuel injection engines of the second generation Porsche 997 or for the first generation Turbos and GT models. With the first generation flat-six engines, it is most likely to occur on the 3.8 but is rare on the 3.6.
What Porsche engines suffer from bore scoring?
Unfortunately, any engine with a hypereutectic engine block can suffer from cylinder bore scoring, not just the M96/M97 engine used in Porsche Boxster, Cayman, and 911 models.
How do you stop the bore score on a Porsche?
Change your engine oil once a year or every 3-5k miles. Have an engine oil analysis performed by SPEEDiagnostix at every engine oil change. Utilize a high-quality boutique type of synthetic engine oil such as Joe Gibbs Driven DT series or Motul 8100 X-Cess.
Is Porsche 997 a future classic?
The Porsche 997 has been the first of the modern 911s, which took its design inspiration from the classic 911 again. With the oval shaped headlights, it is already considered as a future classic.
Are 997 prices rising?
Like many modern, second-hand 911s, prices of the 997 base models have been falling ever since they left an OPC forecourt. However, the depreciation on both Gen1 and Gen2 variants is slowing up, so we went to two 911 specialists to find out how low 997 Carrera prices are expected to go.
What causes engine cylinder scoring?
In general, scoring of the cylinder wall and piston skirt first presents itself as scuffing that then, over time, leads to scoring. There are a number of main reasons for this to occur which include: Poor fit of piston to bore. Wrist pin walking out of pin bore.
What is a Porsche IMS bearing?
Your IMS bearing (or InterMediate Shaft bearing) supports your intermediate shaft, which extends through the engine. The actual intermediate shaft is not usually the problem in Porsches. The IMS bearing is behind the notorious engine problems that plague this classic car brand.
How does cylinder scoring happen?
What is scoring in engine?
A scoring engine is an executable that has a well-defined input, a well-defined output, and performs a purely mathematical task. That is, the calculation does not depend on the environment in which it is running— it would produce the same result anywhere.
Does the 997.1 have IMS issues?
The former’s IMS problems have been serially discussed by owners, specialists and internet experts alike. Yet the 997.1’s M97 engine is not without its own problems.
Is the 997 Gen 2 A Good Investment?
Without a shadow of a doubt, the 997 Porsche Carrera is most certainly a good investment. Especially, the 997.2 thanks in part to better reliability as opposed to the 997 gen 1. A future classic for sure, the 997.2 Carrera 2 S with a stick shift is still up for grabs in the used car market at discounted rates.
Is 997 a good investment?
Comparatively rare, especially with the more desirable six-speed manual transmission, the 997 GTS is a car that looks likely to hold its value well. It may not be an investment per se, but this is a car you buy to drive and enjoy, and enjoy it you will.
Is Porsche 997 a classic?
The Porsche 997 – Already a future classic The Porsche 997 has been the first of the modern 911s, which took its design inspiration from the classic 911 again. With the oval shaped headlights, it is already considered as a future classic. The 997.1 ist the last Carrera with manifold injection.
What are the symptoms of scored cylinder walls?
Symptoms of Bore Scoring
- A rythmic ticking noise that sounds similar to that of a hydraulic lifter.
- One exhaust pipe has more soot than the other.
- Increased oil consumption.
- Extremely black engine oil.
- Pooling of oil within the cylinders.
- Aluminum debris found in the oil filter, and engine oil sump.
Does 997 have IMS issues?
Porsche has been at the center of a recent controversy due to IMS (intermediate shaft) bearing failure in some 997 production cars, but recent data shows that there may not be as many problems as initially thought.
Which year Porsches have IMS problems?
All Porsche Boxster, Cayman, and 911 vehicles from 1997 through 2008 with the M96 or M97 engine have an IMS (intermediate shaft) that is supported by a sealed ball bearing.
What causes a scored cylinder?
What causes a scored piston?
Scoring usually occurs when one or more piston rings fail and the minor level of movement is allowed between the piston and valve wall. Whereas scuffing is hard to see and easily missed, scoring is easily visible and may even include discoloration. Left unchecked, scoring eventually culminates in a seized piston.