cowl vent question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

deiinc · 06-11-2013, 08:21 PM

When the cowl vent is closed is it supposed to be even with the cowl or does it stick up a little? I have the rubber gasket not the sponge gasket and the lip of the vent sets on top of the rubber seal which makes the vent set a bit higher than the cowl. Is the outside lip of the vent supposed to fit around the outside of the seal?

Thanks for any help,
Roger

**mr48chev** · 06-11-2013, 09:15 PM

The seal should fit in a channel around the opening and the outside lip of the vent lid should fit down in a groove/space that is around that. I'm at work so I can't get a photo or two but will try to remember when I get home.

parkwood · 06-11-2013, 10:03 PM

Quote:

Originally Posted by deiinc

When the cowl vent is closed is it supposed to be even with the cowl or does it stick up a little? I have the rubber gasket not the sponge gasket and the lip of the vent sets on top of the rubber seal which makes the vent set a bit higher than the cowl. Is the outside lip of the vent supposed to fit around the outside of the seal?

Thanks for any help,
Roger

The one we installed stuck up just a bit... maybe a 1/16"..

**mr48chev** · 06-11-2013, 11:43 PM

Looking at a couple of my cabs they do stick up a tad but you should be able to adjust things so the vent sits level when it is tight. Having the mechanism free and lubricated helps too

deiinc · 06-18-2013, 12:57 PM

What worked for me,,, I ditched the stiff rubber gasket and used a 3/16 x 3/8rubber foam door gasket from Home Depot. The new gasket compresses a bit and the vent now sets very close to even with the cowl. Hope this helps others.
Roger

NEWFISHER · 06-18-2013, 01:57 PM

Awesome follow up Roger, thanks for posting

daveboy · 06-18-2013, 07:35 PM

Okay, I have a follow-up question. My truck did not have a cowl gasket when I purchased it. I purchased the rubber one and noticed that it had a flat side and the other side had a raised lip on it. I didn't see any need to apply adhesive since with the cowl closed tightly there should be no way water can get it, right? Wrong! Got caught in the rain the other day and took a shower! I installed the gasket with the raised side down, so should this side be up? And, am I correct about not needing adhesive? The vent sits down flat with the cowl and closes very tightly.

Thanks,
daveboy

deiinc · 06-18-2013, 09:18 PM

My rubber gasket was flat on both sides and just too thick and didn't compress. To answer your question unless there's a groove in the cowl that the bump in the rubber fits into, I would have glued the flat side down to the cowl, (bump up)

**mr48chev** · 06-19-2013, 12:18 AM

Yep, raised side up, When I checked I found out that I never put the gasket I bought in my truck It's probably shriveled up in one of the sheds by now

06-11-2013, 08:21 PM	#1
deiinc Registered User Join Date: Sep 2010 Location: Lebanon NH Posts: 14	cowl vent question When the cowl vent is closed is it supposed to be even with the cowl or does it stick up a little? I have the rubber gasket not the sponge gasket and the lip of the vent sets on top of the rubber seal which makes the vent set a bit higher than the cowl. Is the outside lip of the vent supposed to fit around the outside of the seal? Thanks for any help, Roger

06-11-2013, 09:15 PM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,713	Re: cowl vent question The seal should fit in a channel around the opening and the outside lip of the vent lid should fit down in a groove/space that is around that. I'm at work so I can't get a photo or two but will try to remember when I get home. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

06-11-2013, 11:43 PM	#4
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,713	Re: cowl vent question Looking at a couple of my cabs they do stick up a tad but you should be able to adjust things so the vent sits level when it is tight. Having the mechanism free and lubricated helps too __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

06-18-2013, 12:57 PM	#5
deiinc Registered User Join Date: Sep 2010 Location: Lebanon NH Posts: 14	Re: cowl vent question What worked for me,,, I ditched the stiff rubber gasket and used a 3/16 x 3/8rubber foam door gasket from Home Depot. The new gasket compresses a bit and the vent now sets very close to even with the cowl. Hope this helps others. Roger

06-18-2013, 01:57 PM	#6
NEWFISHER Registered User Join Date: Sep 2012 Location: Oregon Posts: 3,303	Re: cowl vent question Awesome follow up Roger, thanks for posting

06-18-2013, 07:35 PM	#7
daveboy Registered User Join Date: May 2013 Location: Sylacauga, Alabama Posts: 60	Re: cowl vent question Okay, I have a follow-up question. My truck did not have a cowl gasket when I purchased it. I purchased the rubber one and noticed that it had a flat side and the other side had a raised lip on it. I didn't see any need to apply adhesive since with the cowl closed tightly there should be no way water can get it, right? Wrong! Got caught in the rain the other day and took a shower! I installed the gasket with the raised side down, so should this side be up? And, am I correct about not needing adhesive? The vent sits down flat with the cowl and closes very tightly. Thanks, daveboy

06-18-2013, 09:18 PM	#8
deiinc Registered User Join Date: Sep 2010 Location: Lebanon NH Posts: 14	Re: cowl vent question My rubber gasket was flat on both sides and just too thick and didn't compress. To answer your question unless there's a groove in the cowl that the bump in the rubber fits into, I would have glued the flat side down to the cowl, (bump up)

06-19-2013, 12:18 AM	#9
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,713	Re: cowl vent question Yep, raised side up, When I checked I found out that I never put the gasket I bought in my truck It's probably shriveled up in one of the sheds by now __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.



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