scottc5z

I was checking the connections for the battery on my 08z and noticed a hose that was flopping around coming from the wheel well? It has an end on it that makes it appear it should be connected somewhere but I didn't find any place that looked like it would fit. Anyone know what this hose is for and where it plugs into?

RyanT

I think it is the vent hose for the battery.

REDZED2

It's fine likely where it is. (hose)
Let it be. IMO

AzDave47

If it is the vent hose for the battery it is definitely not fine where it is as that would allow hydrogen gas from the battery to be vented into a closed space and that is not good at all.

psp6158

unless the battery was changed to a non vented battery

scottc5z

So you think that hose connects to the battery itself then? I had no idea batteries had vents.

REDZED2

I have talked to enough techs and others about this. I bet you there are thousands with the hose just dangling in the battery box. My buddies car and mine both have Johnson Controls GM factory batteries and no solid connection to the battery. His battery hasn't exploded. 8 years and still going. Lid shut. Blown out of proportion. JMO. There should be a GM plastic connector to mate the hose to the battery if one so chooses. Don't know part number.

AzDave47

If it is a lead acid battery (the most common type) then the proper battery would have a place where that odd fitting on the hose connect onto the top of the battery. When batteries are in open vented spaces like the engine compartment there is no issue as the hydrogen will vent and dissipate in the air. The Z06 battery is enclosed in a tight, flammable space and if the hydrogen vented into that space and the battery terminal provided a spark (because it was loose) exciting things could happen. In that case, excitement is not a good thing.

There are other high cost batteries that do not require venting and some of those get replaced in Z06's, but if you have a standard battery, the that hose should connect to the battery.

AzDave47

OPs original post said: It has an end on it that makes it appear it should be connected somewhere,

perhaps that was the fitting you mentioned?

Maybe some of the techs you talked to can also change oil properly in a Z06.

OP, I am not saying it will cause problems, just that GM built it to be vented to the outside.

z06clif

thats what it is

Clif

rprice

Is the yellow top Optima battery a vented battery?

REDZED2

What did I say to you to **** you off Dave?? Wow...I just said from what I have been told by pros (mechanics with 25 + years and gear heads to boot) and mine and my friends personal experience. It still vents enough without the hose. My hose never had a connector to connect to the side hole in the battery. I might have hooked it up at first. That reply was undeserved. Agree to disagree.

AzDave47

Sorry for the comments.

REDZED2

All good Dave.

stefuel

Hydrogen gas is very explosive. Does anyone remember that German blimp It's also not very good for your lungs, eyes or any other soft tissues.

Z06hopeful

That is the battery vent hose. It will connect to a fitting on the original GM battery and to the fender well. This vents the battery gases to the outside of your passenger compartment. The fact that the battery is mounted in the hatch (passenger compartment) necessitates the venting.

shopteacher

Not in a Corvette, but I charged a battery once in a '48 Dodge pickup where the battery was in a compartment under the driver floorboards in the cab. I unhooked the charger from the battery after an overnight 1 amp charge before unplugging the charger, got a spark and a large hydrogen flame. That cab was way more ventilated than a vette where you must open a door to close the hatch. Summary, if you use a lead acid battery, get one with the vent and hook up that hose.

z06 driver

I bought a replacement for my 08z at autozone and it came with a fitting that plugs in the battery and connects to the hose.

murf257

I recently replaced my original Delco battery and found the vent hose connected directly to this battery. The replacement battery does not allow for the hose to be reconnected so I just left it there.

Premiumspeed

I'd connect it just to be safe. There is a very small chance of an issue with the gases. Not something to lose sleep over, but it's better to be safe.