Ordering my Walbro. High or Low Pressure?
03-01-2009, 12:51 PM
#4
http://www.racetronix.biz/customkiti...c=RFPK-001&eq=
The 1999 & up LS1 F-body cars have a pump that is inside a plastic fill-bucket. The fill-bucket is equipped with two inlets on the bottom. The equalization checkvalve is used to fill the bucket when the level of fuel in the tank is greater than in the bucket. The equalization checkvalve does not allow fuel to exit the bucket. The venturi system's inlet is a combination checkvalve and powered suction system. The factory pump supplies pressurized fuel via a small tube which feeds a calibrated jet inside the venturi system. This jet of fuel shoots across the base of the checkvalve inlet thereby creating a suction effect which draws more fuel from the bottom of the tank through the filter sock. This venturi system keeps the bucket full all the time even when the fuel tank is almost empty. A full bucket keeps the pump immersed in fuel regardless of the tank level so that when the tank is low on gas and you are doing some hard cornering or acceleration the pump does not run dry and start aerating (air bubbles) the fuel. This happens as the fuel sloshes from side to side in the tank leaving the center low on fuel. This can cause detonation and possible engine damage. The 99+ F-LS1 cars with plastic tanks have no baffling in them so the bucket is very important. The bucket also allows the car to operate with lower fuel levels in the tank due to its scavenging effect. The fill-bucket improves motor crank-to-run time as the priming time is reduced under most conditions. The return line feeds the pressure regulator on the fuel module which diverts fuel back into the bucket so that the unused fuel also helps keep it full at all times. Keeping the pump constantly immersed in gas within the bucket can extend the pump's life by not allowing it to be exposed to open air. Open air within the tank contains moisture and in time will cause the pump to rust / seize up especially if left to sit for long periods of time without the tank topped-up (i.e. winter storage).
The Racetronix pump assembly is shrouded in a T6 anodized aluminum housing. This housing simulates the proper outer diameter of the factory pump for proper fitment. WARNING: Some copy-cat pump kits use a foam rubber sleeve which will deteriorate using today's pump and race gas which can contaminate the fuel module. This can cause pump failure and engine damage. GM does not use rubber parts in late model fuel systems so why introduce this potential menace now?
The Racetronix pump is equipped with a factory type fuel tube not a rubber hose. This fuel tube is important as when the fuel module is placed back in the tank it must bend sharply which can cause standard rubber hose to kink. This fuel tube is much more resistant to the solvents in today gas and it will not crack, split, swell and collapse like a rubber hose. This is why G.M. uses them as OE equipment. WARNING: Some copy-cat pump kits use a longer generic flex-tube which can bind up and puncture once the module is compressed back into the tank.
The Racetronix pump assembly is equipped with an outlet which supplies the factory venturi system which is required to keep the factory system functional! All other pump solutions to date do not have this feature which requires a hole be punched in the bottom of the fill-bucket thereby dangerously disabling its functionality. WARNING: Some copy-cat pump kits use questionable venturi fitting insertion processes which could lead to internal pump contamination and pre-mature pump failure. Racetronix insertion process was perfected and proven after two years of development and field testing prior to production. Racetronix has stress analysis tests to backup our process.
The Racetronix fuel module is equipped with a one-piece soldered wiring harness made from mil spec. Teflon silver-plated wire. This is the same type of wire used at the factory as Teflon is the most resistant to deterioration when exposed to modern pump and race gas. This harness has a Walbro connector at one end and a GM factory connector at the other which plugs directly into the pump module. No crimping, splicing or wiring adapters are required. A truly plug & play wiring solution. Due to the age of some F-LS1 cars much of the in-tank connectors are black / corroded. The Racetronix harness replaces all these questionable components. WARNING: Some copy-cat pump kits use fuel resistant plastic wire which is not as durable as Teflon. As well they do not have a new connector installed on the end of the in-tank harness which forces the customer to re-use the questionable old factory connector body. This has also let to some confusion as to the proper polarity forcing some people to remove their tanks again in order to fix the problem!
The 1999 & up LS1 F-body cars have a pump that is inside a plastic fill-bucket. The fill-bucket is equipped with two inlets on the bottom. The equalization checkvalve is used to fill the bucket when the level of fuel in the tank is greater than in the bucket. The equalization checkvalve does not allow fuel to exit the bucket. The venturi system's inlet is a combination checkvalve and powered suction system. The factory pump supplies pressurized fuel via a small tube which feeds a calibrated jet inside the venturi system. This jet of fuel shoots across the base of the checkvalve inlet thereby creating a suction effect which draws more fuel from the bottom of the tank through the filter sock. This venturi system keeps the bucket full all the time even when the fuel tank is almost empty. A full bucket keeps the pump immersed in fuel regardless of the tank level so that when the tank is low on gas and you are doing some hard cornering or acceleration the pump does not run dry and start aerating (air bubbles) the fuel. This happens as the fuel sloshes from side to side in the tank leaving the center low on fuel. This can cause detonation and possible engine damage. The 99+ F-LS1 cars with plastic tanks have no baffling in them so the bucket is very important. The bucket also allows the car to operate with lower fuel levels in the tank due to its scavenging effect. The fill-bucket improves motor crank-to-run time as the priming time is reduced under most conditions. The return line feeds the pressure regulator on the fuel module which diverts fuel back into the bucket so that the unused fuel also helps keep it full at all times. Keeping the pump constantly immersed in gas within the bucket can extend the pump's life by not allowing it to be exposed to open air. Open air within the tank contains moisture and in time will cause the pump to rust / seize up especially if left to sit for long periods of time without the tank topped-up (i.e. winter storage).
The Racetronix pump assembly is shrouded in a T6 anodized aluminum housing. This housing simulates the proper outer diameter of the factory pump for proper fitment. WARNING: Some copy-cat pump kits use a foam rubber sleeve which will deteriorate using today's pump and race gas which can contaminate the fuel module. This can cause pump failure and engine damage. GM does not use rubber parts in late model fuel systems so why introduce this potential menace now?
The Racetronix pump is equipped with a factory type fuel tube not a rubber hose. This fuel tube is important as when the fuel module is placed back in the tank it must bend sharply which can cause standard rubber hose to kink. This fuel tube is much more resistant to the solvents in today gas and it will not crack, split, swell and collapse like a rubber hose. This is why G.M. uses them as OE equipment. WARNING: Some copy-cat pump kits use a longer generic flex-tube which can bind up and puncture once the module is compressed back into the tank.
The Racetronix pump assembly is equipped with an outlet which supplies the factory venturi system which is required to keep the factory system functional! All other pump solutions to date do not have this feature which requires a hole be punched in the bottom of the fill-bucket thereby dangerously disabling its functionality. WARNING: Some copy-cat pump kits use questionable venturi fitting insertion processes which could lead to internal pump contamination and pre-mature pump failure. Racetronix insertion process was perfected and proven after two years of development and field testing prior to production. Racetronix has stress analysis tests to backup our process.
The Racetronix fuel module is equipped with a one-piece soldered wiring harness made from mil spec. Teflon silver-plated wire. This is the same type of wire used at the factory as Teflon is the most resistant to deterioration when exposed to modern pump and race gas. This harness has a Walbro connector at one end and a GM factory connector at the other which plugs directly into the pump module. No crimping, splicing or wiring adapters are required. A truly plug & play wiring solution. Due to the age of some F-LS1 cars much of the in-tank connectors are black / corroded. The Racetronix harness replaces all these questionable components. WARNING: Some copy-cat pump kits use fuel resistant plastic wire which is not as durable as Teflon. As well they do not have a new connector installed on the end of the in-tank harness which forces the customer to re-use the questionable old factory connector body. This has also let to some confusion as to the proper polarity forcing some people to remove their tanks again in order to fix the problem!
__________________
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<