Garage Exhaust System

[rebel-a-wing]

Hi everyone, I hope you are all having a wonderful New Year. My question is I would like to employ a mechansim or system that would direct or vent my cars exhaust out of my garage while the dorr is closed. My purpose is this is to be abel to work on my car in my garage with the engine running with succumbing to the exhaust fumes. I really really don't wish to die.

Have any of the members here installed or fabricated such a system? If so would you mind sharing your process?

Your adiv e is appreciated.

[Donbecker]

I've seen really simple setups at a lot of garages (repair shops).

They just cut a hole in the bottom of the garage door and have a small piece of sheet metal covering it.

Then they have a flexible duct that they put over/near the exhaust and put the other end of the duct into the hole in the garage door.

[Dave]

Design your own...cheap.
http://www.thetoolwarehouse.net/shop/TTW120.html

[Donbecker]

Good find Dave.

[SweetDaddyD]

With a modern Cat and working closed loop computer controlled emissions systems once warmed up it would take a heck of a long time to kill yourself. But I understand. A long length of flexible rubber or silicone hose under the cracked garage door is what we usually used at work in the past. In the dyno rooms they had a unit roll down out of the ceiling that also had fan evacuation- prolly too complex for a home garage set up

[brian4.2]

I use 4" metal dryer hose. Lightweight and you can flatten the end to go under the door. Home depot type deal.

[Dave]

Originally Posted by Donbecker

Good find Dave.

Ironic this thread came up...I had just ordered this stuff, put it in today. All the parts were about $90 delivered (a little higher for the dual tip guys), and they're heavy duty. If you're going to play with cars in Ohio, gotta have it.

[Buz]

Exhaust venting systems are not uncommon in automotive and motorcycle repair shops. Most I have seen are routed toward the ceiling for ease of installation and the hot exhaust probably escapes faster upward. Make sure the part that attaches to the muffler seals and can take the heat. Melted plastic is really hard to get off of an exhaust system.

[TimMullen]

Originally Posted by Buz

Exhaust venting systems are not uncommon in automotive and motorcycle repair shops. Most I have seen are routed toward the ceiling for ease of installation and the hot exhaust probably escapes faster upward.

I would suggest that most are routed up so that the hoses are out of the way - nothing to trip on, and since there is more time spent moving vehicles around and more people walking around, it's safer that way. Also a lot of shop mounted systems connect to a common blower that sucks the exhaust into the tube and blows it out a vent.

Lots of smaller shops and home shops have the vents in the door or the wall, and that works just fine.

[Dave]

Originally Posted by Buz

Make sure the part that attaches to the muffler seals and can take the heat. Melted plastic is really hard to get off of an exhaust system.

Sounds like you might have learned the hard way at some point No, the tailpipe coupler is not plastic, but rather a hardened rubber compound designed just for that purpose. It fits like a glove on my 2bular.

For anyone interested, here are the part numbers I used:
CRUDF25, CRUFLT250, CRUF300.

[cpforyou]

Next time I visit this place, I take a picture, but I know of one who just doesn't vent his hose to the outside, but he vents it to an old MDF subwoofer box with two ports. One port is for IN, the other one is for OUT. There is some packing inside of it to reduce sound farther.

I guess know what the purpose of a subwoofer box is for when you switch to a Lotus and have no room for a subwoofer box.