Open Headers
6th Gear Member
Joined: Sep 2005
Posts: 5,128
From:
RE: Open Headers
first, will sound like crap. second, you will lose most of your torque/power unless you are forced inductin or have a massive high rpm cam. some backpressure is needed, otherwise your engine wont be able to run right. fuel injected engines repsond to open headers way different than carbureted engines.
third, YES IT WILL HURT YOUR ENGINE!!! Not instantaneously, but if left like that for prolonged time, it will burn the exhaust valves and eventually weld the head to the block. This is due to too little back pressure and see... the exhaust pipes do help take heat away from the engine... you take away that heat exchanger and the heat just burns up whatever it touches last a.k.a. the cylinder head and exhaust valves
and yeah you don't want a ticket for open headers.
George
third, YES IT WILL HURT YOUR ENGINE!!! Not instantaneously, but if left like that for prolonged time, it will burn the exhaust valves and eventually weld the head to the block. This is due to too little back pressure and see... the exhaust pipes do help take heat away from the engine... you take away that heat exchanger and the heat just burns up whatever it touches last a.k.a. the cylinder head and exhaust valves
and yeah you don't want a ticket for open headers.
George
6th Gear Member
Joined: Sep 2005
Posts: 5,128
From:
RE: Open Headers
not so much the back pressure, but because if you have no exhaust beyond the headers, the heat is going to build up. Your exhaust system does serve as a giant radiator for some engine heat. Mostly heat from the exhaust valves and the cylinder head. No back pressure just makes a lot of engines run like a$$
3rd Gear Member
Joined: Mar 2006
Posts: 579
From: SC
RE: Open Headers
ORIGINAL: monkeydude3
first, will sound like crap. second, you will lose most of your torque/power unless you are forced inductin or have a massive high rpm cam. some backpressure is needed, otherwise your engine wont be able to run right. fuel injected engines repsond to open headers way different than carbureted engines.
third, YES IT WILL HURT YOUR ENGINE!!! Not instantaneously, but if left like that for prolonged time, it will burn the exhaust valves and eventually weld the head to the block. This is due to too little back pressure and see... the exhaust pipes do help take heat away from the engine... you take away that heat exchanger and the heat just burns up whatever it touches last a.k.a. the cylinder head and exhaust valves
and yeah you don't want a ticket for open headers.
George
first, will sound like crap. second, you will lose most of your torque/power unless you are forced inductin or have a massive high rpm cam. some backpressure is needed, otherwise your engine wont be able to run right. fuel injected engines repsond to open headers way different than carbureted engines.
third, YES IT WILL HURT YOUR ENGINE!!! Not instantaneously, but if left like that for prolonged time, it will burn the exhaust valves and eventually weld the head to the block. This is due to too little back pressure and see... the exhaust pipes do help take heat away from the engine... you take away that heat exchanger and the heat just burns up whatever it touches last a.k.a. the cylinder head and exhaust valves
and yeah you don't want a ticket for open headers.
George
2nd Gear Member
Joined: Jul 2005
Posts: 382
From:
RE: Open Headers
ORIGINAL: monkeydude3
not so much the back pressure, but because if you have no exhaust beyond the headers, the heat is going to build up. Your exhaust system does serve as a giant radiator for some engine heat. Mostly heat from the exhaust valves and the cylinder head. No back pressure just makes a lot of engines run like a$$
not so much the back pressure, but because if you have no exhaust beyond the headers, the heat is going to build up. Your exhaust system does serve as a giant radiator for some engine heat. Mostly heat from the exhaust valves and the cylinder head. No back pressure just makes a lot of engines run like a$$
6th Gear Member
Joined: Apr 2005
Posts: 5,608
From: Wilmington, NC
RE: Open Headers
ORIGINAL: Master
gas milage will suck also
gas milage will suck also
my h pipe is leaking and i get 150 miles on 1 tank... 16 gallon tank...
150/16 = 9mpg.... so sad..
and my daily driver now is a 99 tahoe
250 miles on 20 gallon tank...
250/20 = 12.5mpg... even sadder.
3rd Gear Member
Joined: Dec 2005
Posts: 533
From:
RE: Open Headers
ORIGINAL: BBond007
yep. and the exhaust fumes will build up under the car. C02. especially in high altitudes, like above 9000 foot where the air is lean, you could easily become asphyxiated and run off a mountain pass and die. Or live and just wake up with a crashed car and a pounding headache.
ORIGINAL: monkeydude3
not so much the back pressure, but because if you have no exhaust beyond the headers, the heat is going to build up. Your exhaust system does serve as a giant radiator for some engine heat. Mostly heat from the exhaust valves and the cylinder head. No back pressure just makes a lot of engines run like a$$
not so much the back pressure, but because if you have no exhaust beyond the headers, the heat is going to build up. Your exhaust system does serve as a giant radiator for some engine heat. Mostly heat from the exhaust valves and the cylinder head. No back pressure just makes a lot of engines run like a$$