Melaka TT
- Thread starter chili e30
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Lennon Tan
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chili e30;488973 said:
Lennon Tan
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Francis, u got your E36 liao ? Congrats.
chili e30
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dear all,i am planing to do a convoy to muar & have tt over there.pls list down your name if u wanna joint.tt venue to be comfirm.
date: 3/2
time: 7.45pm-8pm gather at shell semabok perdana
tt venue: uncle john tanjung agas muar.
1. chili e30
2. nevets
3. turbology
4. lennon tan
5. axcleleron
6.
8pm sharp covoy roll.
date: 3/2
time: 7.45pm-8pm gather at shell semabok perdana
tt venue: uncle john tanjung agas muar.
1. chili e30
2. nevets
3. turbology
4. lennon tan
5. axcleleron
6.
8pm sharp covoy roll.
marcus.ypyee
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- Feb 8, 2009
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dear all,i am planing to do a convoy to muar & have tt over there.pls list down your name if u wanna joint.tt venue to be comfirm.
date: 3/2
time: 7.45pm-8pm gather at shell semabok perdana
tt venue: uncle john tanjung agas muar.
1. chili e30
2. nevets
3. turbology
4. lennon tan
5. axcelron (correction)
6.
8pm sharp covoy roll
date: 3/2
time: 7.45pm-8pm gather at shell semabok perdana
tt venue: uncle john tanjung agas muar.
1. chili e30
2. nevets
3. turbology
4. lennon tan
5. axcelron (correction)
6.
8pm sharp covoy roll
marcus.ypyee
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coincidence i got come n see see look look..
*happy with "Official Member" tag
hahaha
*happy with "Official Member" tag
hahaha
marcus.ypyee
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chili e30;488974 said:
i tot malacca racun king is ChiliE30
Deuce
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- Aug 10, 2009
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dear all,i am planing to do a convoy to muar & have tt over there.pls list down your name if u wanna joint.tt venue to be comfirm.
date: 3/2
time: 7.45pm-8pm gather at shell semabok perdana
tt venue: uncle john tanjung agas muar.
Malacca clan:
1. chili e30
2. nevets
3. turbology
4. lennon tan
5. axcelron (correction)
Muar:
6. Deuce™ ( will try ma best to be there)
8pm sharp covoy roll
* Newly launch UPTOWN LEDANG nightly till 12am (weekend till 2am) located just in front of Uncle John.
date: 3/2
time: 7.45pm-8pm gather at shell semabok perdana
tt venue: uncle john tanjung agas muar.
Malacca clan:
1. chili e30
2. nevets
3. turbology
4. lennon tan
5. axcelron (correction)
Muar:
6. Deuce™ ( will try ma best to be there)
8pm sharp covoy roll
* Newly launch UPTOWN LEDANG nightly till 12am (weekend till 2am) located just in front of Uncle John.
turbology
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- Jan 26, 2008
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Since we brought it up, here you go:
THE MYTHS OF "BACK PRESSURE" - quoted online
Some self-proclaimed motor gurus state that you should not run too large of an exhaust tube on your car because engines need a certain amount of backpressure to run correctly. Although the statement about not running too large of a tube is correct, the assumption about engines needing backpressure is not. Remember this, it is one of the most common performance misconceptions out there. Read on and you will be able to argue with and break off any self-proclaimed expert on the subject!
You need to have the lowest backpressure possible to produce the maximum power by keeping pumping losses low. Too big of an exhaust pipe causes power loss, especially low-end torque. This is because a big pipe has less exhaust stream velocity than a smaller pipe. Velocity is essential to get the best scavenging (or sucking) effect from tuned headers, which we will discuss in more detail later in a future installment. To simplify things, if the exhaust gas flow is kept high with good velocity, a vacuum can develop behind the closed exhaust valve allowing even better scavenging when the exhaust valve opens on the next exhaust cycle. Good scavenging is even more critical on valve overlap, the part of the 4-stroke cycle where both the intake and exhaust valves are open, especially with longer duration performance camshafts.
If the exhaust pipe is too large, the flow will be sluggish with low velocity and the scavenging will not be good. Remember that a good exhaust has low backpressure and high velocity. The only possible exceptions to this rule are for turbocharged or nitrous motors. It is almost impossible to put too big of an exhaust past a turbocharger as a turbo depends a lot on the pressure differential across its turbine to get power recovery efficiency. A turbo engine can have an exhaust gas volume about 1.5-2 times more than an equivalent displacement naturally aspirated motor. NOS motors also have a pretty high exhaust volume and require a bigger exhaust if they are to be optimized for NOS operation.
THE MYTHS OF "BACK PRESSURE" - quoted online
Some self-proclaimed motor gurus state that you should not run too large of an exhaust tube on your car because engines need a certain amount of backpressure to run correctly. Although the statement about not running too large of a tube is correct, the assumption about engines needing backpressure is not. Remember this, it is one of the most common performance misconceptions out there. Read on and you will be able to argue with and break off any self-proclaimed expert on the subject!
You need to have the lowest backpressure possible to produce the maximum power by keeping pumping losses low. Too big of an exhaust pipe causes power loss, especially low-end torque. This is because a big pipe has less exhaust stream velocity than a smaller pipe. Velocity is essential to get the best scavenging (or sucking) effect from tuned headers, which we will discuss in more detail later in a future installment. To simplify things, if the exhaust gas flow is kept high with good velocity, a vacuum can develop behind the closed exhaust valve allowing even better scavenging when the exhaust valve opens on the next exhaust cycle. Good scavenging is even more critical on valve overlap, the part of the 4-stroke cycle where both the intake and exhaust valves are open, especially with longer duration performance camshafts.
If the exhaust pipe is too large, the flow will be sluggish with low velocity and the scavenging will not be good. Remember that a good exhaust has low backpressure and high velocity. The only possible exceptions to this rule are for turbocharged or nitrous motors. It is almost impossible to put too big of an exhaust past a turbocharger as a turbo depends a lot on the pressure differential across its turbine to get power recovery efficiency. A turbo engine can have an exhaust gas volume about 1.5-2 times more than an equivalent displacement naturally aspirated motor. NOS motors also have a pretty high exhaust volume and require a bigger exhaust if they are to be optimized for NOS operation.
