06-02-2020, 08:53 PM | #1 |
Give speed a chance
Drives: 2015 Camaro 2LS, 2015 Camaro Z/28 Join Date: Nov 2019
Location: Mesa, Az
Posts: 2,373
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Inlet design rationale
This is a 2 part question. 1st, can someone tell me why there are these large extra chambers on our V6 intakes? Curious as to what (if any) purpose they serve. 2ND, what is the best way to clean out oil residue from this chamber and its smaller companion on the other side? After 50K miles mine is well lubricated. Can only remove so much with rags, fingers and obscenities. I know the catch can discussion will come up. I have a dirty side can I installed 5K ago, may do clean side in near future.
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2LS: a TREMENDOUS machine. Z/28: it's a BIT MORE POWERFUL, of course.
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06-02-2020, 09:48 PM | #2 |
Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013
Location: Orlando, FL
Posts: 1,741
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1. Resonators. Reduce intake noise.
2. I am quite partial to Simple Green.
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06-02-2020, 10:11 PM | #3 | |
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There is only one large chamber. It's a resonator, so you don't hear the intake
growl. That's why people change to CAIs, they want to hear it. Why? I don't know, but they do. It's not only a resonator, it's an expansion chamber. Quote:
back to the stock intake from the CAI. Of the two types, it's a side-branch resonator; a chamber that sit next to the tube and is connected to it via a small duct or channel. They increase air flow by dampening harmonic reflections due to air flow being suddenly cut off (on the falling edge of each intake cycle), which cause the air mass to bounce back and create back pressure that interferes with the next intake cycle. They work in exhausts for eliminating drone by flipping the phase of the exhaust pulse. Back to the intake: That smaller one, from the fresh air vent off the LH side valve cover is made so that works properly. The problem is, if you have a 10-12, or early 13, your PCV valve orifices are too small. There is an updated part, or a modification procedure. You're not supposed to get oil and moisture in that fresh air side, but the inadequate PCV on the earlier models causes pressure to go out that side. That's why it's called the clean side. It also alleviated an oil leak from the front main seal. IT also stopped a lot of venting through the fresh air side, where I was getting oil. |
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06-03-2020, 01:25 AM | #4 |
Give speed a chance
Drives: 2015 Camaro 2LS, 2015 Camaro Z/28 Join Date: Nov 2019
Location: Mesa, Az
Posts: 2,373
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Thanks DSX for reminding me about Simple Green. I use it around the house often. I recall I used it on some greasy Buick valve covers once with good results. Thanks '10 for a thorough explanation. I figured there was a purpose other than some engineers artistic creativity.
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2LS: a TREMENDOUS machine. Z/28: it's a BIT MORE POWERFUL, of course.
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