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Hey guys. I was just wondering if there is a way to make my 1999 lexus gs400 v8 engine sound 100% silent. I heard somebody call it i think "Nightcrawler". If that makes any sense lol.. Any help is appreciated.
Well the stock intake has some pretty agressive helmholtz resonators for noise cancellation. I took it apart before and The the black box connected to the intake splits into two chambers to cancel noise. The first smaller chamber kills one frequency that is attached to one vacuum line. The other larger section in the box kills a different frequency with two vacuum lines. I actually did the opposite and fabricates a restrictor plate to make them louder while still preserving the stock black box and vacuum abilities. .
The exhaust is very quiet as well, there is just no room left for any additional mufflers.
100% silent combustion engine is 100% impossible. Darn you, physics. Best you could do is add insulation like kitabel said, and make sure every moving part is in optimal condition and properly lubricated.
Well the stock intake has some pretty agressive helmholtz resonators for noise cancellation. I took it apart before and The the black box connected to the intake splits into two chambers to cancel noise. The first smaller chamber kills one frequency that is attached to one vacuum line. The other larger section in the box kills a different frequency with two vacuum lines. I actually did the opposite and fabricates a restrictor plate to make them louder while still preserving the stock black box and vacuum abilities. .
The exhaust is very quiet as well, there is just no room left for any additional mufflers.
Eicca, For the intake mods basically I used a dremel drill to cut a plate sized section out of the bottom of the resonator chamber so you couldn't see it. Then I cut another plate out of plastic to replace it, except drilling two small holes to allow vacuum to the attached three hoses on the other side of the resonator box. There are two holes drilled in the plate because the factor box splits into two helm holtz chambers within the large resonator box. One side feeds one hose, and the other side feeds two. Now instead of air easily entering the chambers, it is now restricted probably by 30x the amount, while still providing the same or if not more vacuum to the hoses.
I did this for more noise, as well as retaining the factory resonator and hose attachment points. There is also a perfect outlined section on the lower air box, that points towards the passenger wheel well that I cut out. The other side of the air box as well as the hood air vent blocks engine heat from this side.
Although, I might just delete the resonator box off the stock intake entirely and running three vacuum lines, I just need to fabricate another plate with three fittings. I don't like the way after market intake filters look, so this is another reason why I am doing this. The resonator box blocks to much of the engine bay now that I have redone it. I painted the whole upper intake manifold, valve covers, cam covers, strut bar, and custom etched and painted the metal service plate on the throttle body with the "L" logo.
01-30-17, 05:03 PM
Completely Silent V8 Engine? Help!!
