Silicone intake to replace OEM with "Helmholtz resonator" (1 Viewer)

[phi1osopher]

I am sick of repairing the little broken vacuum line nipples off my old OEM intake and discovered this one on AliExpress when shopping for a replacement. The OEM Toyota intake (with RESONATOR) is part number is 17875-50190 and cost about $500 to replace. This silicone intake pipe is about $130 shipped. I ordered it, but it will take another week or two to arrive.
I currently have a snorkel and it looks like this will allow me to retain the factory airbox and MAF sensor. Any thoughts?

https://www.aliexpress.us/item/3256804237690037.html

 

[Rhetoric]

Sorry about your nipples.

Give us your thoughts on the new piece when it arrives.

 

[baltistyle]

This is how Toyota describes the resonator for a different model.

“The Intake Air Resonator #2 (#17894-0H100), an essential Engine-Fuel part of the Air Cleaner system, plays a vital role in regulating and stabilizing the airflow into the engine. It dampens the noise produced during the intake process and helps in maintaining optimal air-fuel ratio for combustion. This Toyota part, backed by Toyota's genuine parts warranty, is crafted for compatibility with specific vehicle models. As with any part, the Intake Air Resonator #2 (#17894-0H100) is subject to wear and tear. If it becomes old, clogged, or defective, it can disrupt the air-fuel mixture, potentially leading to increased fuel consumption, decreased engine performance, and elevated emission levels. Therefore, periodic replacement is crucial. In addition to supporting engine efficiency, this part also aids in maintaining a quieter and smoother ride, contributing to the overall safety and performance of your Toyota vehicle.”

 

[2001LC]

I've removed resonators, more than 300 times in over 100 4.7L. Never busted a nipple. But, I have fix a few.

I've not seen this aftermarket on a 100 series. But have seen the K&N, which looks similar. I see fuel trim issues, and I do not recommend their use.

 

[phi1osopher]

I am hoping that by lengthening the intake with my snorkel it will help maintain a smooth air flow. Unrelated but relevant I also just added an air filter flow restrictor gauge to help keep an eye on things. Wix part #24801, requires drilling an 11/16” hole in the top half of the air box.

 

[2001LC]

Other than tired of fixing nipples. Are you have some issues, with how engine running?

Nice FP gauge. Is it permanently attached, or was it just a picture during a leak down test.

 

[phi1osopher]

The truck was running poorly and i did some maintenance which included permanently installing the fuel rail pressure gauge.

I came back from a couple thousand miles off-roading in Mexico with a misfire. I apparently picked up a tank of bad gas and blew the iridium tips off of my spark plugs. I replaced the coil packs and plugs, and then decided to check up on the whole fuel system.

I don't think the bad gas ruined my fuel pump, rather it has been going out for a while, which manifested as two long crank hard to starts over the course of a week. So I went ahead and replaced a bunch of fuel system stuff which included the gas cap, fuel pump, fuel sender gasket, fuel filter, fuel pressure regulator, fuel pressure dampener -- all OEM parts except for the fuel pump. I was getting 31 PSI at the fuel rail, and as seen in the photo I'm now getting 43 PSI. Also replaced the air filter and the fuel trim temperature sensor.

Attached is a photo of my messy maintenance journal with part numbers.

 

[2001LC]

The truck was running poorly and i did some maintenance which included permanently installing the fuel rail pressure gauge.

I came back from a couple thousand mi off-roading in Mexico with a misfire. I apparently picked up a tank of bad gas and blew the iridium tips off of my spark plugs. I replaced the coil packs and plugs, and then decided to check up on the whole fuel system.

I don't think the bad gas ruined my fuel pump, rather it has been going out for a while, which manifested as two long crank hard to starts over the course of a week. So I went ahead and replaced a bunch of fuel system stuff, which included the gas cap, fuel pump, fuel sender, gasket, fuel filter, fuel pressure, regulator, fuel pressure dampener, all OEM parts except for the fuel pump. I was getting 31 PSI at the fuel rail, and as seen in the photo I'm now getting 43 PSI.

Cool, to have gauge permanently on rail. I looked into wireless, for iphone monitoring. But never did get one.

Never heard of bad gas blow tip off spark plugs. But I've see bootlegs spark plugs, do just that.

 

[phi1osopher]

I don't really know what blew the tips off my spark plugs. I believe they were correct Denso plugs, but who can say for sure. The old ones lasted about 30k miles and I think they had holograms on the boxes.

 

[2001LC]

I don't really know what blew the tips off my spark plugs. I believe they were correct Denso plugs, but who can say for sure. The old ones lasted about 30k miles and I think they had holograms on the boxes.

30K, bootleg from China.

 

[phi1osopher]

Perhaps so. I bought them from a Toyota dealership website. They sure seemed like real Toyota parts. I used to be a service manager in the automotive industry for Honda, Toyota and Porsche. While I'm not infallible, they sure seemed real to me at the time. But who can say for sure.

I think it's totally possible that me driving 90 mph for 500 miles across the Mexican desert with a tank or two of bad gas might have been enough to blow the tips off/ melted the electrodes off my iridium plugs.

I also noticed a 25% fuel economy drop at the same time.

 

[2001LC]

Typical buying from Toyota, is best. Box would be Toyota. If Denso box. Well! You must know some Toyota parts guys, pull from world pac (advance auto).

 

[MrMikeyG]

I'm considering a 2002 lx470. That resonator on the stock intake pipe; is it a filter of some sort and can become clogged? As these trucks gain milage, is the whole tube assembly leaning into being a maintenance item?

 

[Bisho]

...or you can fix the nipple for about $3 and 5 minutes of time. EVAP Hose Connection To Intake Broken. Best Fix? - https://forum.ih8mud.com/threads/evap-hose-connection-to-intake-broken-best-fix.1355235/post-15815778

 

[Bisho]

...The dreaded double post...

 

[Trunk Monkey]

I'm considering a 2002 lx470. That resonator on the stock intake pipe; is it a filter of some sort and can become clogged? As these trucks gain milage, is the whole tube assembly leaning into being a maintenance item?

No clogs, not a maintenance item. Guessing most of dinking with them and breaking the nipples when they clean their TB occasionally.

 

[MrMikeyG]

Understood. Just occasional breakage of things then.

 

[FJFOOL]

Toyota spent a lot of R & D developing that part so as far as I'm concerned why ditch it . Replacing old vacuem lines and putting a little silicone grease on the nipples (oh, my mind wandered there) will make that job easier. My .02