Heated air intake
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Heated air intake
well i found that i am missing a peice from this PITA system. my neighbor says its some kind of heat resistant paperlike tube. it goes there
looking at my shop manual it could be called the HAI Diaphragm.
if anyone knows where i can get one of these or what its called or any other information related to its function i would really appreciate it.
thanks
Parker
oh and that tube on the bottom goes to the exhaust manifold and just above that tube there is an identical one protruding from the air intake hose
looking at my shop manual it could be called the HAI Diaphragm.
if anyone knows where i can get one of these or what its called or any other information related to its function i would really appreciate it.
thanks
Parker
oh and that tube on the bottom goes to the exhaust manifold and just above that tube there is an identical one protruding from the air intake hose
Last edited by parkkicks; 12-07-2008 at 11:52 AM.
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I know carbs have to be kept warm so they don't freeze up, but is the 4" mini dyer-duct really going to make much of a difference, granted it extends towards the exhaust manifold. My memory is kind of foggy on this as I sold my '89 2wd 3 years ago.
Last edited by Matt16; 12-07-2008 at 02:14 PM.
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well from what i have read and heard it speeds up the warming process. i live in washington so we get some cold mornings and my rig spits out crazy amounts of white smoke for 5-10 mins before idling down. my neighbor told me this would speed things up a bit
#7
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normally just called the "pre-heater duct" or "heat-riser"; and I'm willing to bet that a guy at the parts store will have no idea what you're talking about unless he's an old school guy that know his stuff good, lol. You might have to just show him in a repair manual, cause even if you show him on the truck, he still might be
I had to teach my manager at Advance Auto Parts when I worked there what it was and what it did! The freak'n manager!
Basically, it's just a corregated (spelling) tube, most of the time with an aluminun exterior coating, that runs from the top of the exhaust manifold to the bottom of the intake tube; just redirects in the intake to pull heated air right from around the exhaust manifold when vaccum accuates that pluger you circled
I had to teach my manager at Advance Auto Parts when I worked there what it was and what it did! The freak'n manager!
Basically, it's just a corregated (spelling) tube, most of the time with an aluminun exterior coating, that runs from the top of the exhaust manifold to the bottom of the intake tube; just redirects in the intake to pull heated air right from around the exhaust manifold when vaccum accuates that pluger you circled
Last edited by iamsuperbleeder; 12-07-2008 at 06:46 PM.
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#9
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naw, they sell perfect replacements at parts stores (in the "help" section as Ezrider explained); they have several sizes, all you have to do is match one up with the ID of the openings on your truck; no need to go to the dealership for something you can get for $5 at the local parts house
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Personally, I've removed any of these from any vehicle I've had. Something that conducts heated air into the intake is horrible for gas mileage. I've found that a properly tuned carbed motor in good condition doesn't really warm up quicker from one of these, and like I said, it hurts gas mileage once it is warmed up. stock disclaimer of it's my $.02
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well its just when cold and its white smoke and it just pours from the tailpipe. only lasts untill engine is at normal temp. i dont believe im burning oil. what causes white smoke?
#14
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cold weather and consdensation maybe?
every vehicle does it; even new ones; it's just something motor's do in cool weather...
so long as it's more like steam and it's dissapearing not too long after coming from the tail pipe, I'd say your safe, but if it's a lingering smoke that leaves a trail behind you, then a little something more than gas is burning... or too much gas...
every vehicle does it; even new ones; it's just something motor's do in cool weather...
so long as it's more like steam and it's dissapearing not too long after coming from the tail pipe, I'd say your safe, but if it's a lingering smoke that leaves a trail behind you, then a little something more than gas is burning... or too much gas...
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well... it lingers for awhile i suppose. but like i said only for awhile. and it is a lot of smoke. like seriously alot. i am not losing any oil tho so im thinking antifreeze? how can i tell?
#17
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Total misinformation.
They should only draw warm air from the exhaust manifold until the engine warms up.
They should only draw warm air from the exhaust manifold until the engine warms up.
Personally, I've removed any of these from any vehicle I've had. Something that conducts heated air into the intake is horrible for gas mileage. I've found that a properly tuned carbed motor in good condition doesn't really warm up quicker from one of these, and like I said, it hurts gas mileage once it is warmed up. stock disclaimer of it's my $.02
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nope oil is good. it had batter not be a HG cause i just bought the truck with 22k on a rebuild. how can i test for burning antifreeze? i have read that it burns white
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the piping called 'heat riser duct' though I've also heard it referred to as a 'stove pipe'. It does not cause the engine to warm up any quicker than without. It's only purpose is to get warm air into the carburetor as quickly as possible to reduce emissions during warm-up since the warmer air will help the fuel remain atomized. Once the engine has warmed up sufficiently, there is no need for warmer air to aid fuel atomization so the diverter flap in the snorkle closes the riser and opens the snorkle to ambient air from the engine compartment.
#20
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... and I feel we have fully explained what it does and why it does it
point is, it's not 100% needed for the running of the truck, but if it bothers you not being there, then you know what to do...
I've never purposefuly ripped them off a past vehicle, but I'm guilty of never replacing one that just fell apart due to old age; I saved the $5 and didn't worry about replacing it, and no harm comes from doing to (so long as you don't go through an emmision test with a cold engin )
point is, it's not 100% needed for the running of the truck, but if it bothers you not being there, then you know what to do...
I've never purposefuly ripped them off a past vehicle, but I'm guilty of never replacing one that just fell apart due to old age; I saved the $5 and didn't worry about replacing it, and no harm comes from doing to (so long as you don't go through an emmision test with a cold engin )