Went to fill up at a nearby gas station ... they are now offering 102 octane racing fuel. "Babe" usually only enjoys 91/92 octane ... Would the racing fuel make things a little too hot for the internal workings??
Thanks in advance!
Karen
and the price per gal on the racing fuel???
here it is close to 7 bucks/gal.
there is one place that sells it close to my place; not worth the price and no difference in performance from what we have discussed previously. I am sure some of the technical-minded member will toss their 2 cents worth in.
Just got 40.1 on the last tank. Highest so far and it was on the middle grade of gas. Tempted to try regular. As someone here said, don't get carried away with fancy oil, fancy oil filters and fancy gas. After all, we're just driving Mitsubishi fork-lift engines.
With no experience with racing fuel, I take the advice of those who know and won't try it.
But, if you have access to Ethanol free gasoline you might want to pay a few cents more and give it a try! I don't know for sure but what it's my imagination, but I seem to notice a slight improvement in performance. And, I have demonstrated an improvement in MPG using Ethanol free.
Dagnabbit, I searched before I posted, really I did!
We'll have to go back and confirm the price at the pump, just for conversation sake; not my usual station and I wasn't doing the fill-up so I wasn't entirely focused.
All racing fuel is better at is knock resistance, which means you can run better ignition timings. However, the computer is calibrated for 91 octane... so you'll see no benefit at all from going to 102 octane, just because the computer won't bother trying the better ignition timings in the first place.
No gains whatsoever to be had on a stock smart. However, if you've got a turbo kit, that's a different story... :naughty:
All racing fuel is better at is knock resistance, which means you can run better ignition timings. However, the computer is calibrated for 91 octane... so you'll see no benefit at all from going to 102 octane, just because the computer won't bother trying the better ignition timings in the first place.
No gains whatsoever to be had on a stock smart. However, if you've got a turbo kit, that's a different story... :naughty:
Like Barney O said, just make sure it's lead-free. Honestly, you should only need to use lead-free racing fuel if you plan to juice it or else it'll more than likely be a waste of money for you.
Yes, I'm aware that instant combustion like that would blow up the engine... but combustion speed is kind of just another trade-off between efficiency and reliability.
I run a mixture of avgas 100LL and premium in my Mach 1, but not in the smart. No point to it. I tried it once and got the same mileage and performance as always.
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