High Velocity Merge Collector
10-06-2008, 07:47 PM
#1
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High Velocity Merge Collector
Any one know the benefits of a high velocity merge collector over a standard merge collector? Got the idea stuck in my head with cuttin the collector off my pace setters and welding up a high velocity meger collector.
10-06-2008, 08:11 PM
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this is what im talkin about. some of the z06 headers ive seen and nascar and higher rpm engines have high velocity collectors.. with the cam im runnin im lookin to be around 7000-7200 rpm 
10-06-2008, 08:49 PM
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10-06-2008, 09:27 PM
#8
I had regular 3" collector on the my old header and the truck ran fine.. Then I switched to my current headers AEM and I noticed the bottom end was alot better... The website I got alot of information from ( www.spdexhaust.com ) had alot of useful information on merge style collectors and transitions... From what I remember the size of the collector determines the RPM range... For example a 1 3/4 primary to 3" collector is designed more for tighter RPM range... The same 1 3/4 primary to a 2.5 collector then back to a 3" pipe will help broaden the rpm range... For some reason the website is not working now.... Maybe they are out of business...
But here is what mine look like... They neck down to 2.5 then expand back to 3.0... The expansion afterwards helps create a low pressure which will actually suck the exhaust out... Or something like that... Also the angle that it merges and expands is also important... You want a gradual merge 20* and a rapid expansion 7*.....
But here is what mine look like... They neck down to 2.5 then expand back to 3.0... The expansion afterwards helps create a low pressure which will actually suck the exhaust out... Or something like that... Also the angle that it merges and expands is also important... You want a gradual merge 20* and a rapid expansion 7*.....
10-06-2008, 10:21 PM
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I had regular 3" collector on the my old header and the truck ran fine.. Then I switched to my current headers AEM and I noticed the bottom end was alot better... The website I got alot of information from ( www.spdexhaust.com ) had alot of useful information on merge style collectors and transitions... From what I remember the size of the collector determines the RPM range... For example a 1 3/4 primary to 3" collector is designed more for tighter RPM range... The same 1 3/4 primary to a 2.5 collector then back to a 3" pipe will help broaden the rpm range... For some reason the website is not working now.... Maybe they are out of business...
But here is what mine look like... They neck down to 2.5 then expand back to 3.0... The expansion afterwards helps create a low pressure which will actually suck the exhaust out... Or something like that... Also the angle that it merges and expands is also important... You want a gradual merge 20* and a rapid expansion 7*.....
But here is what mine look like... They neck down to 2.5 then expand back to 3.0... The expansion afterwards helps create a low pressure which will actually suck the exhaust out... Or something like that... Also the angle that it merges and expands is also important... You want a gradual merge 20* and a rapid expansion 7*.....
10-06-2008, 10:28 PM
#10