Custom ducting.
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Custom ducting.
I was thinking when I have my dash apart I will do a custom duct system behind the panels. I'm going to leave the stock center housing that rises up to become the defrost vent.
From there, I was thinking of modifying the housing over the door and running hoses to the ball vents instead of the bulky plastic ducts. The other idea I had was adding small in-line tube fans. Like on a wood stove exhaust, but smaller to fit in the tubes. That would give me an increase of air flow.
I was also thinking of making them reversable, so when the defrost is on, the tube fans will create back pressure from the ball vents and add to the defrosts air flow. any thoughts?
From there, I was thinking of modifying the housing over the door and running hoses to the ball vents instead of the bulky plastic ducts. The other idea I had was adding small in-line tube fans. Like on a wood stove exhaust, but smaller to fit in the tubes. That would give me an increase of air flow.
I was also thinking of making them reversable, so when the defrost is on, the tube fans will create back pressure from the ball vents and add to the defrosts air flow. any thoughts?
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
I agree with bernie, the defrost works by heating the windshield above the dew point and blowing the condensation thats there dry. So for Defrost/Defog, all you need is warm air to the windshield.
The ducts might be a good idea, I saw some somewhere had something to do with custom AC that should maybe work better than stock parts.
If the plan for the in-line fans if for air volume, I think fixing the ductwork air leaks and an improvement to the existing fan might get you where you want to be. High Speed circuit that gets full alt voltage to the fan motor, maybe a C4 fan and motor..
my .02
The ducts might be a good idea, I saw some somewhere had something to do with custom AC that should maybe work better than stock parts.
If the plan for the in-line fans if for air volume, I think fixing the ductwork air leaks and an improvement to the existing fan might get you where you want to be. High Speed circuit that gets full alt voltage to the fan motor, maybe a C4 fan and motor..
my .02
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by BanGnGearS
IDK.. Is this a daily driver? I only drive my vette in the nice weather so i just take the tops off.. Sounds like a lot of work and a huge PITA. Just my opinion
And you're right, it would be, but there is NO interior in the car right now, AND...putting the old system back together is a PITA big time. It was already held together with duct tape, and I just don't want to hassle with it. I can make one junction box at the door, with a tube for the ball vents and a tube for the center console. I don't need the foot vents aside from the ones already on that center box.
The tube fans were for volume. Maybe a better fan and no leaks will solve the defrost issue but it only worked on chilly days, not cold or humid days. I would have to crack a window to dry the glass.
Melting Slicks
Joined: Oct 2004
Posts: 2,662
Likes: 8
From: Knoxville Tennessee
The C4 fan is a little longer than your fan so you will need to make a spacer to allow for the longer fan. The fan also has more blades with better curvature to push more air. Buy the fan and motor and I think the mid 90's was the vintage you want.
Bernie
Bernie
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by BerniesVette
The C4 fan is a little longer than your fan so you will need to make a spacer to allow for the longer fan. The fan also has more blades with better curvature to push more air. Buy the fan and motor and I think the mid 90's was the vintage you want.
Bernie
Bernie
Any idea how big of a spacer? I suppose I could buy it and compare it to my old one. Do you have to remove the whole core box to get it removed? Never done a blower motor before.
Racer
Joined: Feb 2005
Posts: 373
Likes: 1
From: Bayonne NJ
Originally Posted by Durango_boy
And you're right, it would be, but there is NO interior in the car right now, AND...putting the old system back together is a PITA big time. It was already held together with duct tape, and I just don't want to hassle with it. I can make one junction box at the door, with a tube for the ball vents and a tube for the center console. I don't need the foot vents aside from the ones already on that center box.
The tube fans were for volume. Maybe a better fan and no leaks will solve the defrost issue but it only worked on chilly days, not cold or humid days. I would have to crack a window to dry the glass.
The tube fans were for volume. Maybe a better fan and no leaks will solve the defrost issue but it only worked on chilly days, not cold or humid days. I would have to crack a window to dry the glass.
So your going to switch from duct tape to duct work??? LOL
.. Let us kno how it goes
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by BanGnGearS
So your going to switch from duct tape to duct work??? LOL .. Let us kno how it goes
.. Let us kno how it goesYeah, it seems Bubba has had a roll of duct tape in the past involved with mty car...
Le Mans Master
Joined: Nov 2004
Posts: 6,128
Likes: 21
From: North Alabama
Originally Posted by Durango_boy
Yeah, it seems Bubba has had a roll of duct tape in the past involved with mty car...
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by Jclgodale3
Check the numbers on that duct tape...very well be matching numbers
Nah, I really couldn't care less about numbers matching...that's why I tossed the tape with no second thoughts. I did like his quality install job...everything was sealed good.
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
Some good threads (I have no idea what happened to the Corvette FAQ article):
http://forums.corvetteforum.com/show....php?t=1193350
http://forums.corvetteforum.com/show....php?t=1359891
http://forums.corvetteforum.com/show....php?t=1427175
http://forums.corvetteforum.com/show....php?t=1460612
http://forums.corvetteforum.com/show....php?t=1193350
http://forums.corvetteforum.com/show....php?t=1359891
http://forums.corvetteforum.com/show....php?t=1427175
http://forums.corvetteforum.com/show....php?t=1460612
Thread Starter
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Originally Posted by I'm Batman
Some good threads (I have no idea what happened to the Corvette FAQ article):
http://forums.corvetteforum.com/show....php?t=1193350
http://forums.corvetteforum.com/show....php?t=1359891
http://forums.corvetteforum.com/show....php?t=1427175
http://forums.corvetteforum.com/show....php?t=1460612
http://forums.corvetteforum.com/show....php?t=1193350
http://forums.corvetteforum.com/show....php?t=1359891
http://forums.corvetteforum.com/show....php?t=1427175
http://forums.corvetteforum.com/show....php?t=1460612
Great links...I think I have what I need. Wonderful stuff.