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Kris239
Gen II
8/03/2001
18:31:51
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 Subject: What? PVC intake melted?!?
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Message:
I came accross this site and was startled by the info this guy has posted. He built a pvc intake for his R/T and said that in 100+ ambient temps the plastic will warp. Of course this could be true or him just advertising this for his product. Has anyone ever have this happen to them? Since I saw this my homemade intake is been sitting in the basement till I start to see cooler temps. Aren't these pipes made to handle water with temps over 200 degrees?
http://www.360airintakez.com/plastic.html
Kris Harnack
1994 Dodge Dakota SLT
3.9L V6 / RC / SB / Auto
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sandman
Dodge Dakota
8/04/2001
00:03:32
|  RE: What? PVC intake melted?!?
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Message:
PVC was not enginiered to take temps. much higher then what a home water heater puts out. I have seen people try to splice two coolant hoses with PVC and it always split on the seam and deforms. I was amazed when I saw so many people on this board useing PVC with out a problem. I always recomend Stainless Steel tubing and pure silicone hose material in place of plastic ducting. The problem with plastic is that you never know what grade and type of plastic you are getting unless you buy bulk blastic and specify.There are alot of high temp plastics but they are not usualy sold over the counter. You will also see that even if the PCV does not melt the repeated heating and cooling will make the PCV degrade much faster. It will become very dry and brittle!
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redbone
Dodge Dakota
8/04/2001
01:13:43
| RE: What? PVC intake melted?!?
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Message:
if you burn pvc it lets of sinide gas
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Joe Boblett
Dodge Dakota
8/04/2001
06:01:04
| RE: What? PVC intake melted?!?
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Message:
That was the actual 3" ABS plumber pipe I made and ran on my R/T. Living here in Las Vegas, NV our outside temperatures reach 115 degrees, so while sitting in traffic with the engine heat and outside heat together melted the intake.
Please do not use PVC/ABS pipe to make the intake piping. PVC/ABS piping is not heat tolerant and will melt and release toxic fumes when exposed to under hood temperatures. Intakes like Iceman systems and K&N Generation 2 are made of thermoplastic, which is a special plastic formulated to take heat. PVC/ABS piping is not..
Take Care,
Joe Boblett
360AirIntakez.com
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DStarr
Dodge Dakota
8/04/2001
10:44:51
| RE: What? PVC intake melted?!?
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Message:
Yes, I was waiting to hear people say that their home made intakes melted.
ABS can only handle temps to 140 deg. F.
PVC can only handle temps to 120 deg. F.
A plastic that you could use is a polyethelyne .
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Kris239
Gen II
8/04/2001
13:04:39
| RE: What? PVC intake melted?!?
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Message:
So Joe, will your intakes fit on a Generation 2 Dakota? I'm positive you would have a market for these if you made them. I already have the air hat and filter, you have a pipe for me?
Kris Harnack
1994 Dodge Dakota SLT
3.9L V6 / RC / SB / Auto
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bjlindsey
Gen III
8/04/2001
14:09:56
| RE: What? PVC intake melted?!?
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Message:
What is the factory airbox made of?
'01 QC 4x4 5.9L 3.92 LSD K&N FIPK Clone Truck Tec bed cover
www.FreeGasForYou.com
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Brian Gaarder
Dodge Dakota
8/04/2001
18:21:07
| RE: What? PVC intake melted?!?
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Message:
I would just like to correct REDBONE. pvc does not give off sinide gas when burned or else it would not be allowed in homes. It gives off Poly Vinyl Chloride gas P-V-C.......
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Flash
Dodge Dakota
8/04/2001
22:08:56
| RE: What? PVC intake melted?!?
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Message:
You are correct about the cyanide gas, it does not produce it when burning. While PVC pipe will melt at high temps, CPVC pipe, which looks just like it, will not melt and is designed for high temps.
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Kraw
Dodge Dakota
8/05/2001
01:35:00
| RE: What? PVC intake melted?!?
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Message:
I have used my PVC "poboy" intake for almost 2 years now... the temp gets up to 100 alot... lots of traffic.. no problems yet! Of course, I wrapped mine with insulated tape =]
I will keep my $50 filter setup.
thank you, drive through
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rezdak
Dodge Dakota
8/05/2001
14:49:57
| RE: What? PVC intake melted?!?
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Message:
Does not get as hot as Las Vegas here in central Nevada but it is not cold either. Have not had problems with my pvc abs intake melting. Like Kraw, I will keep using this po bo system. I am on a budget and can't afford K&N FIPK.
2000 sport 4x4 4.7L auto tran a/c
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duncan
Dodge Dakota
JOIN HERE
9/11/2003
23:54:20
| RE: What? PVC intake melted?!?
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Message:
i built a short ram intake for a 03 chevy extreme. so far so good but i used stainless steel. I had herd that PVC is not the way to go in these kind of applications. my buddy daniel has a 92 celica GTS and wants an intake. what should i use to build one??
thanx,
duncan
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GraphiteDak
GenIII
9/12/2003
00:35:37
| RE: What? PVC intake melted?!?
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Message:
Been using my ABS intake here in Phienix, AZ with no problems.
However I insulated it with reflective foil tape since day one so I don't know how it would be with out.
Kraw said "I will keep my $50 filter setup.
thank you, drive through"
I say the same thing!
2003 Graphite QC 4X4 4.7 Auto 3.55
Home Brewed Cold AIr Intake, Flowmaster 40 series, Modified TPS to .72VDC, Modified IAT to compensate for home brew intake
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wg34
Dodge Dakota
JOIN HERE
9/12/2003
05:41:42
| RE: What? PVC intake melted?!?
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Message:
The whole purpose is to give the engine cold air ,if these things got hot enough to melt they wouldn't be supplying cold/cool air now would they.The air rushing throuhg them should be enough to keep them keep them well below melting point.I however,fitted an PVC one ,then took it to a muffler shop and had them bend a piece of 3" tubing to match my shaping.It wasn't becuase I didn't think it would melt ,I just thought it didn't look good in my "03 Dak.
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GraphiteDak
GenIII
9/12/2003
23:04:05
| RE: What? PVC intake melted?!?
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I admit the metal ones "look" better. But metal duct always conducts ~~~HEAT~~~ faster. The ABS will insulate the outside heat much much better than metal. Hmm... that's why my second step which was planned from the beginning is to wrap reflective insulation around my ABS but I haven't found what I was looking for yet.
This will help for looks and for even more heat resistance!
I have my 6000 mi service tomarrow and want this to look better before the dealer sees it so maybe I'll go buy something tonight from home depo. If I do I'll take pictures and get back here with the results.
2003 Graphite QC 4X4 4.7 Auto 3.55
Home Brewed Cold AIr Intake, Flowmaster 40 series, Modified TPS to .72VDC, Modified IAT to compensate for home brew intake
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GraphiteDak
GenIII
9/13/2003
02:32:53
| RE: What? PVC intake melted?!?
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Message:
OK. I did some more insulating tonight.
Click HERE to see full details.
I can't possibly see any purchased Air Intake working any better than this home brewed one.
Save alot of your money and have fun building your own!
2003 Graphite QC 4X4 4.7 Auto 3.55
Home Brewed Cold AIr Intake, Flowmaster 40 series, Modified TPS to .72VDC, Modified IAT to compensate for home brew intake
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teamfast
Dodge Dakota
JOIN HERE
9/13/2003
12:10:01
| RE: What? PVC intake melted?!?
IP: Logged
Message:
okay. Why buy a 20000 truck and use the cheapest components to run it? do you buy your tyres at wal mart? Mandrel bent tubing is just as affordable as plumbers stuff. Get through your yellow pages and look for a trucking parts store. exhaust pipes for these babys work awesome and if you can run a hacksaw and a screwdriver, your set. Heres a pic of mine. sorry im an idiot with computers i cant link it.
http://f1.pg.photos.yahoo.com/ph/teamfast55/vwp?.dir=/Dakota+and+stuff&.dnm=4.7intake.jpg&.view=t&.done=http%3a//f1.pg.photos.yahoo.com/ph/teamfast55/lst%3f%26.dir=/Dakota%2band%2bstuff%26.src=ph%26.view=t
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GraphiteDak
GenIII
9/13/2003
22:45:17
| RE: What? PVC intake melted?!?
IP: Logged
Message:
Here is the photo teamfast is talking about...
Yup. That's an exhaust pipe allright. But it's kind of ...ah..well RICE if you ask me. No offense.
Sad thing is... that's an open filter getting VERY HOT air from the radiator. I was just showing my intake to someone today while my truck was running and VERY HOT air blows right there where the filter in the above photo is!
That may SOUND better but HOT AIR does no good at all.
The point I am trying to make is you need air from OUTSIDE the engine compartment.
As for metal vs. ABS, etc. Plastic conducts heat very very slowly. Yes it could melt, but not under the hood with insulation it wont.
Take two Dakota's, one with an older aluminum intake and a newer one with the plastic one. Shut them off after driving and put your hand on each one. Aluminum intake OUCH it burns your hand!
Plastic one. Not any hotter than ambient temp. I can pull up a mountain grade and pull into the gas station open the hood and hold my factory plastic intake.
My bro in law has the aluminum intake on his 5.2 RAm and after sitting 30 minutes the intake was still too hot too touch and we read the IAT sensor which was in that sucker and it gave a reading of like 200 degrees! That must suck when you re start that sucker and go to take off or from sitting at a light. I bet the 4.7 gets some of it's advantage from the plastic intake.
Anyway. I think the (un insulated) metal tube is more likely to heat up your incoming air than ABS.
But no matter what you decide, you better get that air form the outside of the engine compartment (and I mean more than just removing the rubber flap) or your just copying the Ricer mentality. (Mods with no purpose)
2003 Graphite QC 4X4 4.7 Auto 3.55
Home Brewed Cold AIr Intake, Flowmaster 40 series, Modified TPS to .72VDC, Modified IAT to compensate for home brew intake
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GraphiteDak
GenIII
9/13/2003
22:48:03
| RE: What? PVC intake melted?!?
IP: Logged
Message:
Oh yeah. I've shown this before in other threads. But this is where I installed my air filter. I had to cut a hole in the metal aiming down behind the headlight to get this here. But NO HOT AIR. It's 100% fresh outside COLDER air.
2003 Graphite QC 4X4 4.7 Auto 3.55
Home Brewed Cold AIr Intake, Flowmaster 40 series, Modified TPS to .72VDC, Modified IAT to compensate for home brew intake
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wg34
Dodge Dakota
JOIN HERE
9/14/2003
00:07:09
| RE: What? PVC intake melted?!?
IP: Logged
Message:
For you tht may be an okay location ,but where I live there is a lot of rain and snow ,that would suck up alot of moisture.
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GraphiteDak
GenIII
9/14/2003
12:43:41
| RE: What? PVC intake melted?!?
IP: Logged
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wg34. It hasn't so far.
I live in Phoenix, Az. It doesn't rain as much here. But I drive up to Payson and all over the mountains of AZ where it does. I also drive through big water puddles, creeks, etc.
With the spash gaurd under the location of the filter (which I placed there since day one) my K&N filter has not been effected. It works great!
Actually, you would get as much or MORE water/mud up in your engine compartment as you would ever get behind the bumper there. The plastic wheel well around the front tire reflects the water that splashes from the tire anyway.
Believe me. That was my first concern when removing my factory air filter box and installing an open element filter because I DO drive thru lots of rain, creek crossing, and in the winter the SNOW. This winter will be my Dak's first, so I haven't tested in the snow but snow is nothing compared to water.
2003 Graphite QC 4X4 4.7 Auto 3.55
Home Brewed Cold AIr Intake, Flowmaster 40 series, Modified TPS to .72VDC, Modified IAT to compensate for home brew intake
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