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I think the “acceptable” limit per my Porsche service advisor for port injection is < .5 whereas for direct injection is < 2. I would be very concerned personally if my UOA showed fuel dilution of 2. But, these are the same people who say in my owners manual that burning a quart of oil every 600 miles is also acceptable????
Yea, when I say the Cayenne shows higher it's not anywhere near 2. It's 0.5 to 1.0 and isn't effecting the viscosity.
So 9a1 is also dangerous engine...is injectors fault rare case or?
has porsche any good engine?
Scoring on the 9A1 is very rare, but there have been some cases. FSI recommends replacing injectors in the 9A1 every 40-50k miles to be safe, but there are members here with 130k and more running their original injectors with very good UOA reports with respect to metal wear and fuel dilution numbers.
So 9a1 is also dangerous engine...is injectors fault rare case or?
has porsche any good engine?
Hi
The 9A1 is one of the most reliable Porsche engines of all time.
Your name is "911 Turbo", so I guess you have a Porsche Turbo.
It is important to know that the "MEZGER" engine also has weaknesses (for example, the Water line, Rods that may rarely warp, RMS etc.). Although it is an engine known as "bulletproof" and yet, it has been crowned as one of the best engines in the world among all sports car manufacturers.
Despite the fact that there are weaknesses (and every engine has some), it does not make the engine not good. Conclusion: Even an engine that has weaknesses still wins the crown - A stunning work of art by Porsche.
As for 9A1, The failure rate of these engines is very negligible - As my friends mentioned above
It is important to remember that the purpose of our forum is to share knowledge among Porsche enthusiasts and not to give grades (which may mislead new Porsche enthusiasts).
To sum up: all of Porsche’s engines are amazing driving and kicking.
BTW, I also had a 997.1 C2S M97 with no issues (track and street). An amazing car as well.
It is important to remember that the purpose of our forum is to share knowledge among Porsche enthusiasts and not to give grades (which may mislead new Porsche enthusiasts).
If you were asked by say a younger car enthusiast who is stretching his/her budget to buy a Porsche, and with the M96/M97 cars now being within reach of such a person, what advice would you give them?
I, having had two of these engines blow, and cumulative information I received over the years, would strongly advise the person to not buy.
If you were asked by say a younger car enthusiast who is stretching his/her budget to buy a Porsche, and with the M96/M97 cars now being within reach of such a person, what advice would you give them?
I, having had two of these engines blow, and cumulative information I received over the years, would strongly advise the person to not buy.
Peace
Bruce in Philly (now Atlanta)
It seems to me that we do not think otherwise. It's a matter of terminology.
To your question: I would tell him to be careful and take into account the potential failures that exist in 997.1 and perfect it all in the purchase price - and the ability to rebuild.
If his pocket allows, I would of course definitely recommend him to go for the new generation 997.2 (better for my taste than 991.1 / 2 but that's another discussion).
At the same time, I would not delete and raise the 997.1 from Earth.
Here is some data collected on a flat freeway (I-8 east of San Diego) run on cruise control for up to 50+ miles. Uncertainity at least ±0.2 mpg indicated. Speed and mileage are absolute (GPS, mileage calculated from actual gallons used), not speedometer, onboard computer indicated (as speed can be off by a couple of mph, likewise mileage can be high by a couple of mpg)
55 mph 31.7 mpg
60 mph 30.5 mpg
65 mph 29.7 mpg
68 mph 28.2 mpg
70 mph 27.1 mpg
Here is some data collected on a flat freeway (I-8 east of San Diego) run on cruise control for up to 50+ miles. Uncertainity at least ±0.2 mpg indicated. Speed and mileage are absolute (GPS, mileage calculated from actual gallons used), not speedometer, onboard computer indicated (as speed can be off by a couple of mph, likewise mileage can be high by a couple of mpg)
55 mph 31.7 mpg
60 mph 30.5 mpg
65 mph 29.7 mpg
68 mph 28.2 mpg
70 mph 27.1 mpg
Even higher than I would have thought, but where's the rest of the chart - that's city driving speeds in a 911. I need the 75-100 numbers
Here is some data collected on a flat freeway (I-8 east of San Diego) run on cruise control for up to 50+ miles. Uncertainity at least ±0.2 mpg indicated. Speed and mileage are absolute (GPS, mileage calculated from actual gallons used), not speedometer, onboard computer indicated (as speed can be off by a couple of mph, likewise mileage can be high by a couple of mpg)
55 mph 31.7 mpg
60 mph 30.5 mpg
65 mph 29.7 mpg
68 mph 28.2 mpg
70 mph 27.1 mpg
mpg is imperial or US?
Wish you meassured at higher speed up to 150 kmh..
10-11-2021, 09:39 AM
