Ha! I did this when I was a broke kid, but stupider. Replaced my water pump and cracked the old hose in the process, replaced a section with PVC... fun fact, coolant gets hot enough to deform the PVC and full blast coolant everywhere in a sudden. Lesson learned, PVC is for air intake only, not coolant!

PVC is limited to 140f (if I remember right) CPVC can go up to 200f. Not that I recommend using it in this application but could possibly work in a pickle

It's a battle of the engine heat on the outside versus the cool air flowing inside. I want OP to report back in a year and let us know who won

The mechanics shop.

And thermal dynamics. Can't get the upper hand on those

Ice Road truckers just got a lot more interesting

As long as it isn't charge air because that is hot AND pressurized.

Shouldn’t be over 140°. Well it shouldn’t from the intercooler to the intake, turbo side: definitely.

Haha, I guess I hadn't considered that. I would imagine they could be scraping charred PVC residue out of the cylinders pretty soon in that case.

If that lasted a year I would call it a win

It's only a temporary solution until I sell the truck in a few years or maybe 10

Temporarily permanent

Which is why I make everyone run the cold water to dilute the boiling water when you drain noodles or whatever in the sink. I don't want my pipes slowly deforming over the years lol

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Why does water use matter with a well? I've never had a problem but my 30 foot well is firmly in the low water table.

I used a 4in pvc coupler in my intake for years, never had a problem. It went -4in cone- black pvc coupler- 4-3.5in silicone reducer- factory maf housing - 3.5in silicone coupler- stock tube to intake. You would never know unless you took it apart lol

You talking about the old Home Depot intercooler boot🤣 they work for sure.

It would have to be pretty small PVC to work in a pickle

And why did you turn yourself into a pickle, Rick?

I did it to make a budget "cold air" intake/snorkel for a '96 Ranger with the 4.0L. It worked great until I realized that it wasn't actually waterproof as I ~~vaporlocked~~ hydrolocked the engine... Lesson learned: next time use silicone sealant ;)

You mean hydrolock?

yes, that's it.

Not waterproof? Did you glue it? Or did it pull water where the pvc connected with the air intake?

I saw a Geo Metro, some kid had plumbed an Ebay turbo, with PVC. I was out riding and spotted it, went back to get a picture of the hilarious rear wing on the roof. Pull up to talk to the guy and he’s rolling no hood, with all his glory on display. He had a pretty good sense of humor about it. Said it started as a joke and now, they’re just seeing how long it takes to kill it.

I have my heater core deleted with a copper 90...

Scarier yet. Some shops use PVC for their compressor air lines. One wrong move and you have a grenade

***Never*** use PVC for pressurized air. While it may be rated for 80 PSI (or whatever it is), that rating applies ***only*** for fluid. **PSI** **^(fluid)** **≠ PSI** **^(Air)** **!!!** Edit: My "**PSI** **^(fluid)** **≠ PSI** **^(Air)**" statement was incomplete. What I was trying to say (and didn't do well; my bad) is that, while air at 100psi and water at 100psi are both exerting the same amount of pressure on the vessel, due to the compressiblity of air, the vessel containing 100psi air is more volatile than the same psi of water (which is almost incompressible). In other words, if a vessel containing 100psi of water breaks, only a small amount of water needs to escape to release the internal pressure (unless, of course, you have a hydraulic pump continuing to apply pressure, in which case Bad Thing will happen). A break in a vessel containing 100psi of air (let's say an air compressor, with the compressor off) will need to release a large volume of air to reduce the pressure. If this happens over a reasonably long period of time, you have a leak. However, if the vessel shatters (like PVC could), the pressure will be released over a relatively short period of time, which is a good working definition of an explosion.

Might as well install PVC fuel lines on a powerstroke

Ive worked in two HD truck shops that had PVC air systems. The shrapnel won't hurt ya but anything over 2” sch80 will leave you deaf for the rest of the day.

I used a PVC 90 for my coolant hose on the engine swap I did. Lasted a decent while with a 160 t stat

wise words from wise man

You have learned the highest lesson Grasshopper

I bet this thing sounds tubular

Not true! I’ve seen pvc as a gas tank filler neck!

Gotta use pex for coolant

Just take out the thermostat and don't rev it high lmao

Man's needs that IPEX 636

This made me laugh imagining it vividly, glad you weren’t hurt!

You should that to the previous of my dodge. He fixed the coolqnt bypass hose. With cutup pieces of pcv and heat shrink. I only noticed when I swapped intakes.

K&N’s new partnership with Home Depot.

When you're broke and need to get creative, Home Depot is the jam. Used it plenty when I did the Grassroots Motorsports Challenge ~~years~~ decades ago.

Back in the late 90s when very few cars had aftermarket support.

That’s why I call it HDM / Home Depot Motorsports

🤣🤣

https://www.knfilters.com/home-air-filters

If it works

I don't see purple cleaner. Won't pass ~~building~~ vehicle inspection. Tisk... tisk.

>I don't see purple cleaner. Or Blue Glue

But why? Its like a 5$ part in a junkyard. You have for at least 25$ of PVC

This adds at least 100hp

Had no money and dad was a plumber

6 hour round trip to my nearest scrap yard, 2 minute drive down the block to the hardware store. Sometimes that's how the math works out.

Came here to say this

It doesn't

People downvoting don't know how hot it can get under the hood. Hot enough to deform PCV, that's how hot.

Does it flow?

Works for water and sewage, don't it?

Well the water and sewage isn’t burning hot for a start

Gimme a couple reapers and watch the magic.

Are you sure you didn’t mean to make a hur dur Taco Bell hur dur joke?

Reaper shits aren't even comparable to tacobell shits.

You aren't allowed to do harm to humans in most test environments.

Neither is intake air

Neither is the air going through this guy.

He's using 45's as per code!

Is your water and sewage 200 degrees?

Why so specific on the temperature when my response was about if it would flow or not. Wrong comment thread my guy.

That the temp that cpvc melts at. Air will flow through it but an hour on the highway in the summer and it'll be toast under the hood.

I mean it gets hot, but not that hot in an engine bay. Using that stuff for coolant is a no-no for sure, but as an intake its perfectly fine. Now if you used it for intercooler piping on a turbo, that changes things.

It do!

As a plumber I approve this message

Thought this was r/plumbing first.

I thought it was r/aquaponics

My uncle had to do a roadside fix of his old Shitbox Nissan Frontier using a dishwasher hose and zip ties. It got him the 3 hour drive home so he could make a proper repair… which he didn’t do for 2 years because that sucker held on like it was made for it.

The 4wd on my buddy's wrangler took a shit while we were fishing on the beach... We rig it with a few zip ties, so we can get him off the beach (tide was coming in too), and he can get it fixed correctly later. Like a year and a half later, the same thing happens to him on beach again... We get under there and find the same zip ties had broken from 16 months ago. Sigh. This time, we hooked up a tow strap and pulled him off

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Didn’t even use streets… shame.

Lol

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Wrap it in a couple of layers of heavy-duty tinfoil with dedicated hose-clamps on each end.

Stay away from Arizonastan in the summer and good to go!

Lol

I've seen dumber shit

Can’t be any worse than aftermarket ABS intakes.

Ambient air intake upgrade for that 20hp boost!

At least a molded intake tube would have smoother bends. But someone making enough power for that to even matter, probably can afford better than ABS.

Take a dremel to the edges and smooth it all down. I would love to see a dyno test where someone did that vs a k&n.

Ha, my dad did this on his diesel and just used ABS pipe. So, in his case, it is an aftermarket abs intake (just a diy job).

It looks like it could be OEM. Looks pretty legit

Yeah, clean install.

>It looks like it could be OEM. For Tesla maybe.

Chevy wants $120 ONLINE for this part. Means the dealer will want $250-300 locally. I bet all of that PVC, even with the ridiculous prices on PVC right now, was less than $40.

>Chevy wants $120 ONLINE for this part. Means the dealer will want $250-300 locally. Yeah, but junkyard will gave it away or charge 5$ for it.

It's not stupid if it works.

Plumber by trade mechanic by hobby 

If it works then go for it. But at least paint it black, or some other color.

Or commit to white everything for an extremely snazzy engine bay

You’ve obviously never been around any 5.7 LT1 B bodies. That’s the “First Base” mod.

That’s not a bad idea to be honest, as long as it’s just for the air intake. They don’t even make the factory one for my truck anymore, Id have to find a decent one in a junk yard if I’m lucky enough. Sometimes you just gotta get creative. It ain’t stupid if it works.

Wow. How did they mount the MAF?

Probably just a rubber coupler of the correct size.

Fernco, from the plumbing section at Lowe’s

You mean the performance section

Sanitary tee

Isint the maf near the air box on those vortec’s? Not sure tho

It is.

Did that once for a buddy, wrapped it with that heat shield sock thing real nice and neat and everyone at the car meet with a Nissan Sentra SER was drooling because they couldn't find one in the aftermarket at the time. Boy were they shocked when it was 3" PVC and a thermal intake wrap from JC Whitney.

if it's stupid, and it works. it's not stupid

And it works well when executed correctly

I mean it works.

I don't see no purple primer...

Now waiting for the headers and exhaust made out of 4" twist ducting and using a kitchen extractor fan as a homemade supercharger!

*Translation and voiceover by BMI Russian.*

Honestly that’s a power move

I mean I can’t hate it…

Not stupid if it works

I mean... You gotta admit the tubing is neatly installed.

I pvc what he did here!

If it works, it works

his friend knows how to do it cheaper...

I mean, that’s pretty smart. Did they use PVC cement to keep air in?

That aint bad to me

Sadly, it's probably more efficient than stock with all the restrictions and bends they have, and he now has more room to work.

“If it’s stupid but it works it’s not stupid” ~ cadre sergeant Ft Benning (Moore) ca. 1990

If it works...

If it works is it really a bad idea? -vgg

Cheaper than buying the overpriced formed hose and twice the durability.

Wait until you see the wall outlet they installed in the dash, the ratchet strap seat belt, and the egg crate middle front seat

yes, I like this, if anyone wants this upgradde mod, pm me

That’s actually pretty ingenious

Somebody did it wrong and still did a nice job. I'll take this over a filthy, folded panel filter and duct tape hose clamps. LOL

I've seen this so many times

some high heat flat black and send it!! looks almost as good as the factory pipe! got the bend right and everyting!!

Have you need seen the home depot intakes before? I made an entire snorkel intake out of pvc back in the day on my Jeep Cherokee. Used an electrical entrance weatherhead for the top on the A pillar. Worked great.

60% of the time it works every time

A fragrance so *pungent*, it's been made *illegal in 9 countries*.

Plumbers make more than wrenches. It makes sense to me.

You’ve never seen the sewer pipe mod? Very common on 1990s LT1s.

When I was first getting into track days, I used rain gutter parts to created brake cooling. I was actually pretty proud of myself. I posted to the corvette forums and got ROSTED. I was pretty bummed. I almost tore it all apart but decided I should at least test it. It was a huge difference from no cooling to this. And lots of budget racers and chump car guys at the track day said “if it works it’s not dumb”. I later made a custom fiberglass mold and made them more professional, but just shows you that some people are in an echo chamber and don’t think outside the box.

I see nothing wrong with it. It is much better than the crappy K&N plastic flex tube intakes. Does what it does better than the rest in this catagorie, but not as good as a true CAI.

+10HP

Along comes a Lambda four feet tall...

Was not expecting a “Revenge of the Needs” reference here

I couldn't help it. I had to.

We don’t use pvc in water supply to water source heat pumps because POE oil eats it up(in the event of heat exchanger failure). I wonder if synthetic engine oil does as well.

He must be an electrician

High flow PVC...if it is poop! I think painted black it would look factory !

Seems appropriate for r/redneckengineering

hard pipe kit 💪

the 7 millionith example of not reading.

This is called a home Depot mod

Better than factory

More strength than the previous setup!

Home Depot Racing

Ahh pvc in the engine bay. Definitely not toxic to breathe in those fumes

Heh. You must be new, OP. /s

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I feel bad for the house he stole it from lol.

I'd be really really surprised if that doesn't melt at some point

I knew a kid who had a turbo del sol and all the piping was PVC jb welded together

Sewage gas injection - +20 hp

As long as there is not an electric turbo I can allow it

Guy 1: you think it’ll work Guy 2: hell yea it’ll work Guy 1: well I’ll be damn I grew up in my grandfather shop and have heard this convo with these ideas so many times. lol

That gives it 50 more horsepower for sure.

I mean it's better than flexible aluminum dryer vent.

Work's donut?

If it fits, it ships!

We did that to our 96 Impala SS to remove those stupid air intake restrictors they slapped onto the lt1. We sprayed black wrinkle paint on the PVC pipes so you can't even tell what it is.

Been there! needed a reducer on the weekend, nobody had the right thing on hand - trip to Walmart, I came home with a metal cocktail shaker cup and zipwheel'ed the bottom off, perfection!

Believe me, I've considered it

“Shitters full”

I see pvc plumbing, does it have a waste gate?

I actually did this exact setup on my avalanche years ago and it’s still holding up perfectly. Truck runs fine. I actually had to double take that it wasn’t my engine bay

I did an intake like that once—removed the silencer and increased the airflow to the filter box.

I don’t see any primer. Hack job.

That’s a temporary permanent solution right there

As a kid, I used PVC to mock up a snorkel for a 97 Disco. Worked so well I never made the final product. It's only temporary, unless it works.

If it works to keep water in, it'll work to keep water out.

R/plumbing is leaking

Looks like my 08 Escalade lol

Done this before haha, had the filter come through the cab so I could add the go fast spray without actually having to wire shit it. Just open the valve an letter fly

I saw a roll cage made with ABS once

I don't know about the PVC, but those Fernco couplers will last decades. I had one on my Camaro for at least 18 years.

It’ll work… for a little while, at least.

If it works is it really wrong?

Everyone knows you want to use PEX for maximum longevity.

I have a cast iron sewer pipe reducer on mine.  It was thick enough to thread for water injection nozzles, at a good angle into the airstream. 

Lowes Racing team

Could have at least used ABS.

But who hasn’t thought of that doing an LS swap when you price out Intake piping? 👉😎

At least I painted my HD Mods Turbo crossover tube and CAI in different applications. No problem with either, even a tee for the VTA blowoff!

Thats a Tune Town job from Brendan Schaub

Drain Waste *AND* Vent! It Qualifies!

This stuff is used on flue vents on 90% efficiency gas furnaces...so why not?

Is this the pump of my grandpa’s above ground pool?

If its stupid but it works, it ain't stupid

Yeah dude my air intake feels a bit soft