turbo manifold design
07-20-2010, 10:18 AM
#1
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turbo manifold design
hi all
i am still a noob to mx5's but turbos i am familiar with. I have noticed alot of custom made exhaust manifolds are very short with all different runner lengths. from previous experience with turbo engine i use equal length manifold that enter the turbo all in the same direction giving a much fast response to boost and reduces lag times. Is it a basis its not needed, not the space or are alot of people not wanting to pay for expensive manifolds.
i am still a noob to mx5's but turbos i am familiar with. I have noticed alot of custom made exhaust manifolds are very short with all different runner lengths. from previous experience with turbo engine i use equal length manifold that enter the turbo all in the same direction giving a much fast response to boost and reduces lag times. Is it a basis its not needed, not the space or are alot of people not wanting to pay for expensive manifolds.
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07-20-2010, 10:25 AM
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most of us go with OTS cast manifolds in the design you see for a compromise in longevity and ease. when those brave souls dare try an adsurbflow style manifold design, improvement on performance are seem everywhere.
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07-20-2010, 10:28 AM
#5
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oh is see. i do stick to mild steel instead of satinless coz of cracking. the better ones for my starlets come with bracesto try and prevent it but the stainless ones do always crack eventually, annoyingly
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07-20-2010, 01:32 PM
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Unfortunately, it seems that much of Western culture is in educational decline. I lament that I was taught but a fraction of what I could have learned in those many hours I spent in the presence of worthless public educators.
Though he may not communicate it eloquently, the OP is certainly correct regarding efficient manifold design. Funneling the pulses in a common useful direction instead of crashing them into each other and dissipating them makes all the sense in the world. I need ABSURDflow in my life.
Though he may not communicate it eloquently, the OP is certainly correct regarding efficient manifold design. Funneling the pulses in a common useful direction instead of crashing them into each other and dissipating them makes all the sense in the world. I need ABSURDflow in my life.
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07-20-2010, 01:43 PM
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There are gains to be made from scavenging with an equal length turbo manifold.
The main reason you see the short manifolds is because the vibrational issues seen on a track car will break a manifold with long complex runners.
Theres a big difference between us, and the rest of the aftermarket/tuner/import world.
Most of us want to race around a road course, which is MUCH more demanding of these components than drag racing, street racing, etc.
If you pay attention, you will see a lot of very conservative tuning, extensive cooling systems, all around overbuilt engines and drivelines, and yet, there are still failures because of how demanding this sport is.
The main reason you see the short manifolds is because the vibrational issues seen on a track car will break a manifold with long complex runners.
Theres a big difference between us, and the rest of the aftermarket/tuner/import world.
Most of us want to race around a road course, which is MUCH more demanding of these components than drag racing, street racing, etc.
If you pay attention, you will see a lot of very conservative tuning, extensive cooling systems, all around overbuilt engines and drivelines, and yet, there are still failures because of how demanding this sport is.
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07-20-2010, 03:30 PM
#16
wow, that is purdy.
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07-20-2010, 04:11 PM
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fast forward to 2:20.... this is the type of person that does a remote turbo install:
http://www.youtube.com/watch?v=m67ZMn0tzg8
yes, he has a remote turbo...or had. it "blew up" on the dyno, twice.
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