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| Different length for trumpet setup; could it work? | |
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| Tweet Topic Started: Aug 5 2009, 12:25 AM (328 Views) | |
| Jc. | Aug 5 2009, 12:25 AM Post #1 |
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Stage 3
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Hey, im sure all you know how the length effects the hp or torque gain of the trumpets right? So instead of having all equal length say 50mm, why not have the centre trumpets as 50mm and the out sides 20mm, Do you reckon this would achieve anything? Or just make the ECU think wtf is going on? |
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| 1i1 | Aug 5 2009, 01:01 AM Post #2 |
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NZ Toyota Parts Guy
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I wouldn't have thought this would be an ideal set-up. Because as one piston is in it's "power zone" another is outside of it's zone, therefore dragging the performance down. Like having a miss down low in a car that should have great torque down low. I could be completely wrong in my thinking, but i'm sure someone will back me up with my theory |
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| AceSniper | Aug 5 2009, 01:38 AM Post #3 |
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Global Moderator
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Think you would get into mixture problems as you will be getting varying amount of air over the cyl's and the ecu fuels all of them the same. |
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| Crampy | Aug 5 2009, 10:38 PM Post #4 |
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Stage 2
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Uneven length runners are used to broaden the torque delivery. Seen it on V8s quite a bit, but not so much on a 4 banger. |
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| Jc. | Aug 5 2009, 11:40 PM Post #5 |
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Stage 3
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Alright thanks I understand all what you are saying. thanks for clearing that up |
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| mike ae111 | Aug 5 2009, 11:43 PM Post #6 |
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new ae111 coming soon
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link? |
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| The Parrot | Aug 6 2009, 09:23 AM Post #7 |
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well i know my poor little cbr250 runs an inline 4 and did have longer ones in the middle 2 and shorter on the outer as well. so its somthing that has been used for many years. |
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| Jc. | Aug 6 2009, 04:35 PM Post #8 |
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Stage 3
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hmm, fair enough then, maybe someone needs to try this haha |
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