Open headers?
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http://forums.corvetteforum.com/1570248307-post20.html
http://forums.corvetteforum.com/1570250956-post24.html
http://forums.corvetteforum.com/1570250956-post24.html
Last edited by rodj; Jul 8, 2010 at 09:03 AM.
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thanks for the upload, I like what he did. I also read the post and I agree with him, I would like the corvette to run better with open headers rather than through the whole system, I do plan for a Tpis Miniram, Lt4 hot cam, 1.6rr, and possiably a new set of heads. I dont care if I lose some hp and mpg for daily driving running the car through the full exhaust system (truly restricting it) if I set it up to run "open" all the time because I hardly drive distance, but when I flip the switch to run open I would really like it to lay down rubber in the 1/4 mile
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@surfer93;
thats really what im after, just that breif run down the track, and I agree, im no engine builder, hell im 15! but I work and im willing to learn and iv noticed everyone running open headers at the 1/4 mile. Where is the back pressure there?
thats really what im after, just that breif run down the track, and I agree, im no engine builder, hell im 15! but I work and im willing to learn and iv noticed everyone running open headers at the 1/4 mile. Where is the back pressure there?
Last edited by C4 Monster; Jul 9, 2010 at 01:48 AM.
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Neighbors were not happy.
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debateable
Read
http://www.uucmotorwerks.com/html_pr...torquemyth.htm
BACK PRESSURE
The amount of back pressure produced by the exhaust system is crucial as too much back pressure will restrict the flow rate of the exhaust gasses at high RPM. The result would be the engine not being able to expel the spent exhaust gasses fast enough to prevent spent exhaust gasses from contaminating the fresh air/fuel mixture that is drawn into the engine on the next intake stroke. Ultimately, this will result in reduced engine power!
If the exhaust pipe is too large, you will get reduced flow velocity of the exhaust gasses. The flow velocity of the exhaust gasses assists with the scavenging of the spent exhaust gasses as well as the amount of air/fuel mixture that can be drawn into the combustion chamber on the next intake stroke. This is because the flow velocity of the exhaust creates a low pressure immediately behind it that sucks more gasses out of the combustion chamber. The trick is thus to get the back pressure just right.
Read
http://www.uucmotorwerks.com/html_pr...torquemyth.htm
BACK PRESSURE
The amount of back pressure produced by the exhaust system is crucial as too much back pressure will restrict the flow rate of the exhaust gasses at high RPM. The result would be the engine not being able to expel the spent exhaust gasses fast enough to prevent spent exhaust gasses from contaminating the fresh air/fuel mixture that is drawn into the engine on the next intake stroke. Ultimately, this will result in reduced engine power!
If the exhaust pipe is too large, you will get reduced flow velocity of the exhaust gasses. The flow velocity of the exhaust gasses assists with the scavenging of the spent exhaust gasses as well as the amount of air/fuel mixture that can be drawn into the combustion chamber on the next intake stroke. This is because the flow velocity of the exhaust creates a low pressure immediately behind it that sucks more gasses out of the combustion chamber. The trick is thus to get the back pressure just right.
Last edited by rodj; Jul 9, 2010 at 03:26 AM.
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Joined: Dec 2009
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debateable
Read
http://www.uucmotorwerks.com/html_pr...torquemyth.htm
BACK PRESSURE
The amount of back pressure produced by the exhaust system is crucial as too much back pressure will restrict the flow rate of the exhaust gasses at high RPM. The result would be the engine not being able to expel the spent exhaust gasses fast enough to prevent spent exhaust gasses from contaminating the fresh air/fuel mixture that is drawn into the engine on the next intake stroke. Ultimately, this will result in reduced engine power!
If the exhaust pipe is too large, you will get reduced flow velocity of the exhaust gasses. The flow velocity of the exhaust gasses assists with the scavenging of the spent exhaust gasses as well as the amount of air/fuel mixture that can be drawn into the combustion chamber on the next intake stroke. This is because the flow velocity of the exhaust creates a low pressure immediately behind it that sucks more gasses out of the combustion chamber. The trick is thus to get the back pressure just right.
Read
http://www.uucmotorwerks.com/html_pr...torquemyth.htm
BACK PRESSURE
The amount of back pressure produced by the exhaust system is crucial as too much back pressure will restrict the flow rate of the exhaust gasses at high RPM. The result would be the engine not being able to expel the spent exhaust gasses fast enough to prevent spent exhaust gasses from contaminating the fresh air/fuel mixture that is drawn into the engine on the next intake stroke. Ultimately, this will result in reduced engine power!
If the exhaust pipe is too large, you will get reduced flow velocity of the exhaust gasses. The flow velocity of the exhaust gasses assists with the scavenging of the spent exhaust gasses as well as the amount of air/fuel mixture that can be drawn into the combustion chamber on the next intake stroke. This is because the flow velocity of the exhaust creates a low pressure immediately behind it that sucks more gasses out of the combustion chamber. The trick is thus to get the back pressure just right.
But the burned valve effect I have read and heard about, is when there is to little back pressure and intake air gets past the exhaust valve cooling it before the cylinder fires and then cylinder heats up after firing, this over time causes burnt valves. But after reading the article, guess on newer engines it would not hve the same effect as carbed engines, seeing how the ECM can better manage fuel and air flow.