Octane

[fasternyou929]

I run 93 in my bike and the wife's car, 87 in the truck.

Originally Posted by racedoll

You actually have 91 available at the gas pump?

Sometimes you can find that here, but mostly is is 87-89-92 or 93.

Originally Posted by Rangerscott

Racedoll, its all the same. I moved from one town and the lowerst was 87, now here its 86. Its all in the same tanker.

All in the same tanker? The octane rating on the pump tells you all you need to know, I'm not sure where you get "it's all the same".

Octane ratings can vary by town and by elevation. In Breckenridge, CO the ratings will make you do a double-take.

[racedoll]

Originally Posted by tached1000rr

I keep losing sight of the fact that you have the RR, so if you went with a slightly higher spec fuel it might not hurt but will not help really either, but with EFI and 02 sensors you have to be careful of what specific race fuel you use because it can harm the 02 sensors. An engine will make it's best power at an octane just short of detonation for a given engine combination. You always want to run the least octane you can that keeps you out of detonation. With mapping and dyno tuning, looking at a/f ratios etc it would be possible to extract more power but if you are not racing I don't really see the point. For supercharged or turbo applications having the added safety margin is good as boost increases and using a timing retard.

Yup, the RR and you better not forget that! LOL
I'd do it just for the hell of it, not anything permanently and not to expect some super results. Just because is the only reason I would.
My a/f mix sucks.

Originally Posted by fasternyou929

I run 93 in my bike and the wife's car, 87 in the truck.

I run 93 in the car too since it is required. Sure glad gas is down from last summer, I'd really be broke.

[Rangerscott]

Originally Posted by fasternyou929

I run 93 in my bike and the wife's car, 87 in the truck.





All in the same tanker? The octane rating on the pump tells you all you need to know, I'm not sure where you get "it's all the same".

Octane ratings can vary by town and by elevation. In Breckenridge, CO the ratings will make you do a double-take.

86 and 87 are the same. I seriously doubt fuel companies are gonna run separate tankers for 1 difference. I know they dont cause I've seen a tanker dump his load in a city 180 miles away that the lowest is 87, then pull into my city at the place I stop and dump it and its 86 here.

[ericr]

Originally Posted by Rangerscott

86 and 87 are the same. I seriously doubt fuel companies are gonna run separate tankers for 1 difference. I know they dont cause I've seen a tanker dump his load in a city 180 miles away that the lowest is 87, then pull into my city at the place I stop and dump it and its 86 here.

Actually the tanker trucks are compartmentalized. They can and do carry mutiple grades in one trailer, so you don't have 3 trucks going to every station for deliveries. That's not to say some stations might sell one grade as another, I've heard of them getting caught doing that.

[fasternyou929]

Originally Posted by Rangerscott

86 and 87 are the same. I seriously doubt fuel companies are gonna run separate tankers for 1 difference.

Oh, so this is all conspiracy theory. Got it. If they're not going to run separate tankers "for 1 difference", why'd they bother printing different stickers for all their pumps?

And those tankers you're talking about have separate compartments for different grade fuels.

If you have some proof they're the same, I'd be curious to read it.