Proper technique for adding Torco to tank
Thread Starter
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
Proper technique for adding Torco to tank
I'm not sure if I'm getting a good mix of my fuel additive (Torco) when I pour it in my tank. Since there are basically two tanks is it possible to get a bad mix? So if I have about 5-gallons in the tank can I just add it in and expect it to get mixed properly?
Thanks
Thanks
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Mix it into the gas before putting the gas in the tank. Get yourself some VP Fuel containers along with the large VP funnel and add the fuel to the car that way.
Bill
Bill
Thread Starter
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
Thread Starter
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
Thanks again
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
Drivers side fuel tank is what you are filling, then once its full, the fuel will slosh over through the transfer tube to full up the passengers tank.
The fuel is first pulled out of the passenger tank to be used (until the dash fuel gauge gets to about half full), and once it's empty, then the fuel is used out of the drivers tank.
So on that note, if you keep the fuel under 1/2 full on the gauge (just fuel in the drivers side tank to mix in that tank alone), then the fuel will only be in the drivers side tank, and the tank being used alone.
As for additives, it's only as good as the fuel you are using as the base, and I mention this since the fuel you are using may be littered with ethanol. If such is the case, then may be better of just running the tanks near empty, and hitting up a Avgas pump or race fuel pump to top the tanks off before heading to the strip instead.
The fuel is first pulled out of the passenger tank to be used (until the dash fuel gauge gets to about half full), and once it's empty, then the fuel is used out of the drivers tank.
So on that note, if you keep the fuel under 1/2 full on the gauge (just fuel in the drivers side tank to mix in that tank alone), then the fuel will only be in the drivers side tank, and the tank being used alone.
As for additives, it's only as good as the fuel you are using as the base, and I mention this since the fuel you are using may be littered with ethanol. If such is the case, then may be better of just running the tanks near empty, and hitting up a Avgas pump or race fuel pump to top the tanks off before heading to the strip instead.
Last edited by Dano523; Jun 24, 2014 at 11:03 AM.
Thread Starter
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
Drivers side fuel tank is what you are filling, then once its full, the fuel will slosh over through the transfer tube to full up the passengers tank.
The fuel is first pulled out of the passenger tank to be used (until the dash fuel gauge gets to about half full), and once it's empty, then the fuel is used out of the drivers tank.
So on that note, if you keep the fuel under 1/2 full on the gauge (just fuel in the drivers side tank to mix in that tank alone), then the fuel will only be in the drivers side tank, and the tank being used alone.
As for additives, it's only as good as the fuel you are using as the base, and I mention this since the fuel you are using may be littered with ethanol. If such is the case, then may be better of just running the tanks near empty, and hitting up a Avgas pump or race fuel pump to top the tanks off before heading to the strip instead.
The fuel is first pulled out of the passenger tank to be used (until the dash fuel gauge gets to about half full), and once it's empty, then the fuel is used out of the drivers tank.
So on that note, if you keep the fuel under 1/2 full on the gauge (just fuel in the drivers side tank to mix in that tank alone), then the fuel will only be in the drivers side tank, and the tank being used alone.
As for additives, it's only as good as the fuel you are using as the base, and I mention this since the fuel you are using may be littered with ethanol. If such is the case, then may be better of just running the tanks near empty, and hitting up a Avgas pump or race fuel pump to top the tanks off before heading to the strip instead.
Torco is the real deal IMO and has worked great for me. However, in the past I poured in 32oz and then filled the tank up. When I got to the track I usually had more gas in the tank than I wanted for racing nor did I raise my octane level as much as I needed.
Gas is 93 octane here with some unknown amount of ethanol in it. I can buy race gas 101 octane near the track but you cannot pump it directly into your car which makes it a hassle if you don't want to carry a gas can around.
Getting the right mix is important on a boosted car. That's why I'm so concerned about getting a good mix.
Thanks!
Burning Brakes
Joined: May 2007
Posts: 965
Likes: 13
From: turn 12 at Road America or TX
Drivers side fuel tank is what you are filling, then once its full, the fuel will slosh over through the transfer tube to full up the passengers tank.
The fuel is first pulled out of the passenger tank to be used (until the dash fuel gauge gets to about half full), and once it's empty, then the fuel is used out of the drivers tank.
So on that note, if you keep the fuel under 1/2 full on the gauge (just fuel in the drivers side tank to mix in that tank alone), then the fuel will only be in the drivers side tank, and the tank being used alone.
The fuel is first pulled out of the passenger tank to be used (until the dash fuel gauge gets to about half full), and once it's empty, then the fuel is used out of the drivers tank.
So on that note, if you keep the fuel under 1/2 full on the gauge (just fuel in the drivers side tank to mix in that tank alone), then the fuel will only be in the drivers side tank, and the tank being used alone.
Glenn
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Thread Starter
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
Slosh cross over tube is at the top of the tanks, and if you corner hard enough to slosh the fuel back over to the empty passenger tank from the drivers tank , then the passenger tank pump will pump it right back to the driver tank to be used.
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
We are assuming that both tanks are the same capacity?
Have to remember that EMPTY on the gauge still leaves aprx. 2 gallons in the tank. Does that mean the 1/2 tank reading means 8 gallons in the drivers side tank OR does it mean 10 gallons with the "hidden" reserve?
Have to remember that EMPTY on the gauge still leaves aprx. 2 gallons in the tank. Does that mean the 1/2 tank reading means 8 gallons in the drivers side tank OR does it mean 10 gallons with the "hidden" reserve?
Thread Starter
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
After studying the drawing and operation on this link: http://www.hessh.de/Corvette/FuelTankSystem.pdf
I think the gas is constantly being circulated between both tanks while the fuel pump is running. Which means you can add an additive at any fuel level and it would eventually get mixed up.
Hopefully if I'm wrong someone will let me know.
I think the gas is constantly being circulated between both tanks while the fuel pump is running. Which means you can add an additive at any fuel level and it would eventually get mixed up.
Hopefully if I'm wrong someone will let me know.
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
After studying the drawing and operation on this link: http://www.hessh.de/Corvette/FuelTankSystem.pdf
I think the gas is constantly being circulated between both tanks while the fuel pump is running. Which means you can add an additive at any fuel level and it would eventually get mixed up.
Hopefully if I'm wrong someone will let me know.
I think the gas is constantly being circulated between both tanks while the fuel pump is running. Which means you can add an additive at any fuel level and it would eventually get mixed up.
Hopefully if I'm wrong someone will let me know.
Thread Starter
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
Quote:
The turbine pump creates more pressure and more fuel
flow than the engine needs. Excess pressure and excess fuel is allowed to bleed back into the left tank by the primary fuel
pressure regulator (V) within the tank.
Quote:
TIP: The pressure regulator is in the fuel tank, not on the fuel rail on the engine. This type of fuel system is called
returnless, or demand. This means that excess fuel is diverted before it leaves the tank, instead of passing through the
fuel rail before being diverted. The result is that hot fuel is not constantly returning from the engine compartment, so the
fuel in the tank stays cooler, improving evaporative emissions.
Quote:
Some of the pressurized fuel is directed to a venturi pump in the left tank. This pump uses fuel flow to siphon fuel from the
main tank into the reservoir, to keep the turbine pump supplied with fuel at all times. As the left tank fuel level drops, the
venturi pump scavenges all of the remaining fuel into the reservoir, regardless of the vehicle’s attitude.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Fuel pump is in drivers side tank, siphon pump draws from passenger to keep drivers side full. So when you are full, both tanks have ~8 gallons in them. As you drive it pulls from the drivers and keeps refilling it from the passenger until that is empty, then there is nothing to pull and you are just running off drivers side. When you fill from dead empty it fills drivers until it gets to the crossover then just spills over into passenger side. If you added torco to a full tank there is a chance the drivers side could be high concentration for awhile until it has time to mix. I wouldn't add it to a full car if possible.
Thread Starter
Drifting
Joined: May 2005
Posts: 1,563
Likes: 334
From: Indianapolis Indiana
Fuel pump is in drivers side tank, siphon pump draws from passenger to keep drivers side full. So when you are full, both tanks have ~8 gallons in them. As you drive it pulls from the drivers and keeps refilling it from the passenger until that is empty, then there is nothing to pull and you are just running off drivers side. When you fill from dead empty it fills drivers until it gets to the crossover then just spills over into passenger side. If you added torco to a full tank there is a chance the drivers side could be high concentration for awhile until it has time to mix. I wouldn't add it to a full car if possible.
Race Director
Joined: Mar 2005
Posts: 10,399
Likes: 26
From: Austin Texas
Fuel pump is in drivers side tank, siphon pump draws from passenger to keep drivers side full. So when you are full, both tanks have ~8 gallons in them. As you drive it pulls from the drivers and keeps refilling it from the passenger until that is empty, then there is nothing to pull and you are just running off drivers side. When you fill from dead empty it fills drivers until it gets to the crossover then just spills over into passenger side. If you added torco to a full tank there is a chance the drivers side could be high concentration for awhile until it has time to mix. I wouldn't add it to a full car if possible.
We still don't know if the tanks are equal volume.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
They are approximately equal volume. The pump/etc displaces more room in the drivers tank, but they are within 1/2 gallon or so.
Fuel is always taken from the drivers side, just the passenger side refills the drivers until it is empty.
Fuel is always taken from the drivers side, just the passenger side refills the drivers until it is empty.