flush mount solution to heater ducts
Thread Starter
Supreme Member

Joined: Jan 2002
Posts: 1,162
Likes: 1
From: California
Car: Z28
Engine: L98
Transmission: T56
flush mount solution to heater ducts
step 1:
obtain flexible rubber ducting tube from a pontiac fiero in the junkyard. I THINK i used the rubber tube from the passenger side up under the front hood, kind of by the heater core hoses. (there is another section on the drivers side by the power brake booster). you need the one that has a nice long straight center section, well you need TWO of them .. one for each duct.
step 2: clean it up, cut off the ends (so you are left with a long straight section), use a tiny bit of vaseline or other oil product to lube the inside 2" of one end, and slip it over the heater duct tube, as shown:
obtain flexible rubber ducting tube from a pontiac fiero in the junkyard. I THINK i used the rubber tube from the passenger side up under the front hood, kind of by the heater core hoses. (there is another section on the drivers side by the power brake booster). you need the one that has a nice long straight center section, well you need TWO of them .. one for each duct.
step 2: clean it up, cut off the ends (so you are left with a long straight section), use a tiny bit of vaseline or other oil product to lube the inside 2" of one end, and slip it over the heater duct tube, as shown:
Last edited by 91L98Z28; Mar 14, 2004 at 04:57 PM.
Thread Starter
Supreme Member

Joined: Jan 2002
Posts: 1,162
Likes: 1
From: California
Car: Z28
Engine: L98
Transmission: T56
final step:
notice flexibility and increased room to flush mount radio:
also note the little red things. they are to space the screw out a tiny bit so the sharp end doesn't pierce the rubber tube.
notice flexibility and increased room to flush mount radio:
also note the little red things. they are to space the screw out a tiny bit so the sharp end doesn't pierce the rubber tube.
Thread Starter
Supreme Member

Joined: Jan 2002
Posts: 1,162
Likes: 1
From: California
Car: Z28
Engine: L98
Transmission: T56
conclusion:
no, there isn't a perfect air tight seal, the rubber tube just kind of "floats" in the (trimmed down) plastic ductwork, but the rubber duct is an almost perfect fit inside the plastic duct, so it's a pretty effective setup.
i felt it a more "permanent" fix than just duct-taping the ducts up, we all know how after a year or two, duct tape's adhesive gets really messy with heat and just makes a mess.
no, there isn't a perfect air tight seal, the rubber tube just kind of "floats" in the (trimmed down) plastic ductwork, but the rubber duct is an almost perfect fit inside the plastic duct, so it's a pretty effective setup.
i felt it a more "permanent" fix than just duct-taping the ducts up, we all know how after a year or two, duct tape's adhesive gets really messy with heat and just makes a mess.
Trending Topics
Thread Starter
Supreme Member

Joined: Jan 2002
Posts: 1,162
Likes: 1
From: California
Car: Z28
Engine: L98
Transmission: T56
the tube is a nice fit over the plastic spout (where the air comes from), I will bet money they never come off. I don't think it needs securing.
if I could have figured out a way to get the rubber flex tube to seal/mate against the plastic "grill" of the vent (the outer piece that you can see when everything is assembled), then the plastic cut duct woudn't have been necessary at all.
as it is, they seem to flow air just fine
if I could have figured out a way to get the rubber flex tube to seal/mate against the plastic "grill" of the vent (the outer piece that you can see when everything is assembled), then the plastic cut duct woudn't have been necessary at all.
as it is, they seem to flow air just fine
Thread
Thread Starter
Forum
Replies
Last Post
IROCZDAVE (88-L98)
Engine/Drivetrain/Suspension Parts for Sale
0
Sep 2, 2015 08:49 AM





