Leaded Fuel?
12-22-2007, 11:36 PM
#11
5th Gear Member
Join Date: Apr 2006
Posts: 3,625
RE: Leaded Fuel?
Here's more:
The Unites States and most other countries switched from leaded to unleaded
fuel years ago. The lead additive, tetraethyllead, retarded "preignition"
in gasoline engines. Preignition causes engines to run rough, and to not
shut off when the key is turned off. The suppression of preignition is
measured by the gasoline's "octane rating". A good high-octane gasoline
allows a standard engine to run smoothly. Leaded gasoline also protected
some older car engines from wearing down by covering soft engine parts with
lead-containing material.
There are two major problems with using leaded fuel. 1) Lead is extremely
toxic, and causes mental retardation in children. Lead oxide from car
exhaust accumulates in soil near roads, and children can get it on their
hands from playing outside. They then ingest it, and it causes its damage.
2) Leaded gasoline ruins automobile catalytic converters. As a result of
these two problems, lead in gasoline has been banned in the U.S. Other
additives, such as methyl-tert-butyl ether (which is about to be banned),
had to be used to improve gasoline's octane rating
The Unites States and most other countries switched from leaded to unleaded
fuel years ago. The lead additive, tetraethyllead, retarded "preignition"
in gasoline engines. Preignition causes engines to run rough, and to not
shut off when the key is turned off. The suppression of preignition is
measured by the gasoline's "octane rating". A good high-octane gasoline
allows a standard engine to run smoothly. Leaded gasoline also protected
some older car engines from wearing down by covering soft engine parts with
lead-containing material.
There are two major problems with using leaded fuel. 1) Lead is extremely
toxic, and causes mental retardation in children. Lead oxide from car
exhaust accumulates in soil near roads, and children can get it on their
hands from playing outside. They then ingest it, and it causes its damage.
2) Leaded gasoline ruins automobile catalytic converters. As a result of
these two problems, lead in gasoline has been banned in the U.S. Other
additives, such as methyl-tert-butyl ether (which is about to be banned),
had to be used to improve gasoline's octane rating
12-23-2007, 01:02 AM
#13
6th Gear Member
Join Date: Jan 2004
Location: United States
Posts: 12,575
RE: Leaded Fuel?
your still having deotnation? did you ever richen up the mix?
If your detonating you need to S T O P doing so. Its sucide to do so on a stock 2v block. At your power level and setup I am surprised the car has taken it even a few times.
If your detonating you need to S T O P doing so. Its sucide to do so on a stock 2v block. At your power level and setup I am surprised the car has taken it even a few times.
12-23-2007, 01:15 AM
#14
6th Gear Member
Join Date: Nov 2004
Location: Tennessee
Posts: 7,797
RE: Leaded Fuel?
I run leaded 110 straight when I go to the track. Usually 6-7 gallons. It LOVES to eat my wideband 02 sensor. That's about all the problems I've encountered. I bumped timing up 3* on the 150 shot, and the car LOVED it.
I will be running 110 with the 200 shot with about 26-27 degrees of timing, and I'm expecting the car to do much better than if I were limited to 93 octane.
I will be running 110 with the 200 shot with about 26-27 degrees of timing, and I'm expecting the car to do much better than if I were limited to 93 octane.
12-23-2007, 01:49 AM
#15
Underboss
Join Date: Jan 2006
Location: Helaware
Posts: 20,273
RE: Leaded Fuel?
ORIGINAL: 2000GT4.6
your still having deotnation? did you ever richen up the mix?
If your detonating you need to S T O P doing so. Its sucide to do so on a stock 2v block. At your power level and setup I am surprised the car has taken it even a few times.
your still having deotnation? did you ever richen up the mix?
If your detonating you need to S T O P doing so. Its sucide to do so on a stock 2v block. At your power level and setup I am surprised the car has taken it even a few times.
12-23-2007, 03:13 AM
#16
3rd Gear Member
Join Date: Oct 2007
Location:
Posts: 885
RE: Leaded Fuel?
there was a good artile with boss330 in a muscle mustang mag, they showed pictures of the effects lead had on the internals for a motor, aswell as the affects meth injection has on the combustion chamber of the heads, neither looked pretty...
12-23-2007, 03:15 AM
#17
3rd Gear Member
Join Date: Oct 2007
Location:
Posts: 885
RE: Leaded Fuel?
ORIGINAL: ZW99GT
I run leaded 110 straight when I go to the track. Usually 6-7 gallons. It LOVES to eat my wideband 02 sensor. That's about all the problems I've encountered. I bumped timing up 3* on the 150 shot, and the car LOVED it.
I will be running 110 with the 200 shot with about 26-27 degrees of timing, and I'm expecting the car to do much better than if I were limited to 93 octane.
I run leaded 110 straight when I go to the track. Usually 6-7 gallons. It LOVES to eat my wideband 02 sensor. That's about all the problems I've encountered. I bumped timing up 3* on the 150 shot, and the car LOVED it.
I will be running 110 with the 200 shot with about 26-27 degrees of timing, and I'm expecting the car to do much better than if I were limited to 93 octane.
12-23-2007, 08:26 AM
#18
Underboss
Join Date: Jan 2006
Location: Helaware
Posts: 20,273
RE: Leaded Fuel?
ORIGINAL: blackonblacksls
there was a good artile with boss330 in a muscle mustang mag, they showed pictures of the effects lead had on the internals for a motor, aswell as the affects meth injection has on the combustion chamber of the heads, neither looked pretty...
there was a good artile with boss330 in a muscle mustang mag, they showed pictures of the effects lead had on the internals for a motor, aswell as the affects meth injection has on the combustion chamber of the heads, neither looked pretty...
