Porsche 924 Octane
I have a stock 1981 U.S. spec 924 I just acquired. Please don't blast me for this question (or hell, go ahead if you just can't help yourself). I have a factory manual that says 91 octane (RON, which I believe is the European standard) or 87 on the US standard. An old contemporary Road & Track test I have says 91 octane. I have poked around here and 924.org and not found an answer.
Around here (midwest usa) 91 - 93 octane is premium and 87 is regular. I have no problem burning premium if that is what it needs, but don't want to pay the extra for it if there is no benefit. |
87 should be fine.
they have pretty low compression. |
Thanks! 9.0 to 1, a little higher than the earlier ones, but not too high.
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different engines, but the US spec 944 with 9.5:1 still calls for 87 octane.
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I know the 944S calls for 90 with 10.9:1 compression, so 87 is more than likely fine for the 924.
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I ran 87 with my 80 924 had no issues and ran like a top.
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It will perform a bit better with the gas it says it needs...it wont die with lower octane but may make some strange clicking noises when accelerating and ofcourse offer a bit less power.
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