Gal req before selected fuel comes out the nozzle?

[strat81]

Skip the plastic race jug and get a steel NATO can. They are generally more durable, leak-proof, and better able to resist pressure changes due to weather.

RoverParts.Com and OldGrouch.com usually have them. Don't buy the chinese knock-offs. Expect to pay about $50 for a 20L can, a little less for the 10L cans.

 

[CHARLIEBRONSON21]

http://www.vpracingfuels.com/vp-drag-racing

 

[Rand]

Originally Posted By: strat81
Skip the plastic race jug and get a steel NATO can. They are generally more durable, leak-proof, and better able to resist pressure changes due to weather.

RoverParts.Com and OldGrouch.com usually have them. Don't buy the chinese knock-offs. Expect to pay about $50 for a 20L can, a little less for the 10L cans.


how can you tell the fakes from the real cans?

 

[metalboy]

Toluene ought to get you over the hump, but wear a respirator and disposable gloves when you're messing with it - toluene is nasty stuff.

If this S2000's tune is so high strung, why on earth are you running it on 93 to start with? Run straight 100 octane on the boost and make yourself a pump gas EMS map with a toggle switch. You're playing with fire if you're trying to run a tune that aggressive on commercial pump gas.

FWIW, you'll be theoretically getting something like 92 1/2 octane from a regular commercial pump assuming that the "regular" is 87 and the "premium" is 93. Those are MINIMUM ratings, by the way. You only have to worry about the hose volume downstream of the filter with a modern pump design, which doesn't keep any substantial volume of fuel above ground when not actively pumping. They do that for safety reasons but it also means you don't have to worry about the pump holding garbage either.

 

[Cujet]

Just an FYI, I filled my white race can with 93 octane. As expected the first part of the fill was amber/clear. It did not turn amber/green until about 1.8 gallons! It seems the Sunoco station I use probably filters the fuel after the mixing occurs. In any case, it was not a sudden change, but a gradual one.

Next time, I'll probably fill a number of 5 gallon cans when I fill up. That way (I'm reasonably ensured) the product is 93. And I have some at home for topping off.

 

[Cujet]

Originally Posted By: metalboy

If this S2000's tune is so high strung, why on earth are you running it on 93 to start with?


Straight 93 runs fine, with minimal knock events. I'm simply trying to keep the fuel quality where I can understand it's performance. And to not end up with 1.7 gallons of regular in my tank. Which DOES increase the number of knock events.

I've tried different stations, the Sunoco by home seems consistent enough.

 

[jrustles]

Originally Posted By: Cujet
Originally Posted By: metalboy

If this S2000's tune is so high strung, why on earth are you running it on 93 to start with?


Straight 93 runs fine, with minimal knock events. I'm simply trying to keep the fuel quality where I can understand it's performance. And to not end up with 1.7 gallons of regular in my tank. Which DOES increase the number of knock events.

I've tried different stations, the Sunoco by home seems consistent enough.


Hey how's your S2000 modified? F20 or F22?

 

[Cujet]

Originally Posted By: jrustles


Hey how's your S2000 modified? F20 or F22?


F22, 8500RPM redline, 19.5Lbs boost, 3mm head gasket, Inline Pro, stage 1, GT 3076r turbo, 3 inch "ultimate racing" dual exhaust, 800HP intercooler, AEM V1 Engine management, 675cc injectors, Walbro 255 fuel pump, 3 inch downpipe with high flow cat. 407HP.

 

[Doog]

I would find your nearby local small airport and go make a deal with the owner to let you fill up with 100 octane. That way at least you get a reliable source for good fuel. OR take your 5 gal cans there and add 1 can of 100 to your 93 tank.

 

[Doog]

Originally Posted By: Brent_G
Originally Posted By: Doog
I have $20 that says every tankful you buy has a slightly different octane content. That number on the pump is just a sticker...if you think the government does anything to ensure refiners make the same blend of fuel you are dreaming. Also, if you think the refiners toss a tank of 87 out to fill a huge tank with 93 your dreaming as well. I run all of my 93 cars and boats on 87...never much difference. Try 87 in your turbo and see what happens. If you don't get a detonation...you are probably getting 90.


Doing this with a modified engine, especially forced induction, is a very very quick way to add a new window in the block/oil pan. Going lean and detonation WILL make you have a very very expensive day.


Yeah I know. But finding a reliable fuel source today is a big challenge.

 

[jrustles]

Originally Posted By: Cujet
Originally Posted By: jrustles


Hey how's your S2000 modified? F20 or F22?


F22, 8500RPM redline, 19.5Lbs boost, 3mm head gasket, Inline Pro, stage 1, GT 3076r turbo, 3 inch "ultimate racing" dual exhaust, 800HP intercooler, AEM V1 Engine management, 675cc injectors, Walbro 255 fuel pump, 3 inch downpipe with high flow cat. 407HP.

Ah! Nice setup, I was wondering if you went the spacer HG/stock shortblock route. Now I see why you definitely need that octane. How is your area for e85? it doesn't run as powerful, but great safety for DD duty. With +3mm, you gotta bear in mind that the quench pads are defeated, so it is indeed a tight line. OTOH thankfully those NA cams are inducing a lower dynamic CR at low- midrange-RPM where detonation is likely, so that's an added buffer. Those NA cams really shine at the high rpm range facilitating that nice HP, and that's just the fun part isn't it? Seriously, for anyone who hasn't driven one, boosted top-end bias engines are a trip

Just curious since you have a 22, what did it make for peak tq?

 

[BMWTurboDzl]

My $.02.

Scuttlebutt is that gas more often than not contains more than 10 percent ethanol. If true you're likely getting higher octane out of the pumps.

 

[Cujet]

Originally Posted By: BMWTurboDzl
My $.02.

Scuttlebutt is that gas more often than not contains more than 10 percent ethanol. If true you're likely getting higher octane out of the pumps.



I use the "test tube" and water method to check ethanol content. My local fuel has never reached 10% content. Lately, it's around 6-7%.

 

[Cujet]

Originally Posted By: Doog
I would find your nearby local small airport and go make a deal with the owner to let you fill up with 100 octane. That way at least you get a reliable source for good fuel. OR take your 5 gal cans there and add 1 can of 100 to your 93 tank.


I own an airplane, and regularly take home 100LL Avgas for my lawn equipment. However, the wideband O2 sensor and Catalytic converter would be adversely affected by the leaded fuel. And, I want to use pump fuel. No need for exotics.

As for torque, it peaks at 305Lb/ft torque then declines and hovers around 260 at redline. The peak torque is mostly due to a bit of boost overshoot, that I've dialed out now. The very best S2000 with my exact setup makes 420HP/300Tq on 93 at 19Lbs boost. Most likely dyno differences. So I'm producing the proper HP for my setup, or really close.

 

[Black_Thunder]

Originally Posted By: Donald
There are gas dispensers that have 3 hoses and 3 nozzles. Find those.



I've never really thought about this topic that much, but I guess now i'm glad i do go to a station that has separate nozzles.

 

[Black_Thunder]

and also sounds like a scam.


if you are buying premium at a single nozzle pump you are getting charged the premium price if the first gallon and half or so is regular 87 octane.


wonderful.

 

[Cujet]

Originally Posted By: Black_Thunder
and also sounds like a scam.


if you are buying premium at a single nozzle pump you are getting charged the premium price if the first gallon and half or so is regular 87 octane.


wonderful.


YEAH,

But look at the bright side, the guy after me purchasing plain-ol-regular gas get's his money's worth! And, I love being charitable.