Merge collectors?
03-02-2003, 05:57 PM
#1
Re: Merge collectors? Our headers will be offered with merge collectors. Will have pics up next week on them, so stay tuned. Here is a little imfo on high velocity merge collectors.
In order to understand how the merge collector works, you must first know why one exhaust system can generate more torque and horsepower than another. The ability of a header/exhaust system to maintain exhaust gas velocity has a tremendous impact on realizing maximum torque and horsepower. Any significant changes in the system such as baffles (mufflers) or collectors will have an impact on exhaust gas velocity. The large area change seen at the transition from the primary tube to the collector causes an immediate reduction in exhaust gas speed. This reduction in speed decreases the efficiency of the system thereby reducing scavenging ability. Scavenging ability is the key factor to which an exhaust system is evaluated. The more efficient the system, the more air/fuel mixture that can be pulled into the combustion chamber. Obviously, the greater quantity of air/fuel mixture that can be burned, the more torque and power potential the engine has.
The construction of a merge collector is such that the change in area at the primary tube to collector transition point is minimized. This gradual transition allows the exhaust gas to maintain as much velocity as possible. Maintaining gas velocity is the key to allowing the exhaust system to reach its efficiency potential.
Merge collectors significantly improve the efficiency of the exhaust system. Its recommend dyno testing to arrive at the final camshaft combination when using this style of collector. If you need that last little edge and are willing to do the testing required to realize the potential gains, merge collectors are one of the most economical ways to gain significant amounts of torque and horsepower in the entire engine combination.
In order to understand how the merge collector works, you must first know why one exhaust system can generate more torque and horsepower than another. The ability of a header/exhaust system to maintain exhaust gas velocity has a tremendous impact on realizing maximum torque and horsepower. Any significant changes in the system such as baffles (mufflers) or collectors will have an impact on exhaust gas velocity. The large area change seen at the transition from the primary tube to the collector causes an immediate reduction in exhaust gas speed. This reduction in speed decreases the efficiency of the system thereby reducing scavenging ability. Scavenging ability is the key factor to which an exhaust system is evaluated. The more efficient the system, the more air/fuel mixture that can be pulled into the combustion chamber. Obviously, the greater quantity of air/fuel mixture that can be burned, the more torque and power potential the engine has.
The construction of a merge collector is such that the change in area at the primary tube to collector transition point is minimized. This gradual transition allows the exhaust gas to maintain as much velocity as possible. Maintaining gas velocity is the key to allowing the exhaust system to reach its efficiency potential.
Merge collectors significantly improve the efficiency of the exhaust system. Its recommend dyno testing to arrive at the final camshaft combination when using this style of collector. If you need that last little edge and are willing to do the testing required to realize the potential gains, merge collectors are one of the most economical ways to gain significant amounts of torque and horsepower in the entire engine combination.
03-02-2003, 06:10 PM
#2
TECH Fanatic
Join Date: Nov 2001
Location: Baton Rouge, LA
Posts: 1,055
Likes: 0
Received 0 Likes
on
0 Posts
Re: Merge collectors? Barry, how does the merge collector rate on your full length headers? Is this the same sort of merge collector I have on my 2 yr old g-hanns?
03-02-2003, 06:25 PM
#3
On The Tree
Join Date: Jun 2002
Location: CT
Posts: 104
Likes: 0
Received 0 Likes
on
0 Posts
Re: Merge collectors? Hey Barry you seem to really understand that scavenging technique in a good exhaust system. This is the reason why my car made 431 with just a cam. It's to bad more people on this board won't open their eyes to a great system. IMO collector design is as important than the header itself. But 99% of the people here think were full of bologna. <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />
Bottom line is you can lead a horse to water but you can't make them drink.
Oh well keep up the good work <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Bottom line is you can lead a horse to water but you can't make them drink.
Oh well keep up the good work <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
