RUST: Windshield rim lower weep holes - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dyno · 02-22-2010, 10:57 PM

Hi,

I'm doing a frame off on my 80 K20 4X4 and am working on rust around the bottom of the windshield just below the rubber gasket. Most of the rust is on both sides close to the 1/4" drain holes.

I have sectioned those areas out and am welding in new sheetmetal pieces (pain in the rear!)

Question: Should I drill new weep holes on both sides or just leave it solid?

Thanks,

Dyno

James McClure · 02-23-2010, 04:31 AM

Dyno, when I did mine I had rust along the entire lower flange. What I did was grind the flange inside and out, then rebuilt it with fiberglass. It turned out quite nicely and the added thickness of the fiberglass makes for a better seal. I did drill out the existing drain holes so in event there is some leakage it drains outside the cab and not inside. Hope this helps, jim

dyno · 02-23-2010, 09:31 PM

Quote:

Originally Posted by James McClure

I did drill out the existing drain holes so in event there is some leakage it drains outside the cab and not inside. Hope this helps, jim

Can you clarify that? Sounds like a contradiction. If you drilled out the drain holes, water goes into the cowl and flows out down by the fenders. My question is do I need those holes?

*78 Chevyrado* · 02-23-2010, 10:20 PM

yes. they are to keep water from staying under there and causing rust. its rusty now but would have been way worse without them. or they could have been plugged. on mine they accidentally got sealer in one of the holes on mine and there was rust, while the other one looked brand new still.

James McClure · 02-24-2010, 12:35 AM

I agree with Kenny and would drill them out. Jim

02-22-2010, 10:57 PM	#1
dyno Registered User Join Date: Sep 2008 Location: Middleton, Idaho Posts: 352	RUST: Windshield rim lower weep holes Hi, I'm doing a frame off on my 80 K20 4X4 and am working on rust around the bottom of the windshield just below the rubber gasket. Most of the rust is on both sides close to the 1/4" drain holes. I have sectioned those areas out and am welding in new sheetmetal pieces (pain in the rear!) Question: Should I drill new weep holes on both sides or just leave it solid? Thanks, Dyno __________________ "Built- not bought" 1958 GMC 150 4x4 in progress 1980 K20- Restored 1985 K3500 Flatbed 58 GMC 4x4 build thread: http://http://67-72chevytrucks.com/vboard/showthread.php?t=557675

02-23-2010, 04:31 AM	#2
James McClure One shot, one kill. Join Date: Dec 2007 Location: Saratoga Springs NY Posts: 859	Re: RUST: Windshield rim lower weep holes Dyno, when I did mine I had rust along the entire lower flange. What I did was grind the flange inside and out, then rebuilt it with fiberglass. It turned out quite nicely and the added thickness of the fiberglass makes for a better seal. I did drill out the existing drain holes so in event there is some leakage it drains outside the cab and not inside. Hope this helps, jim __________________ 1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shotJim or Paladin whichever you choose.

02-23-2010, 10:20 PM	#4
78 Chevyrado Account Suspended Join Date: Dec 2007 Location: Unnapreciative, Trollville Posts: 2,079	Re: RUST: Windshield rim lower weep holes yes. they are to keep water from staying under there and causing rust. its rusty now but would have been way worse without them. or they could have been plugged. on mine they accidentally got sealer in one of the holes on mine and there was rust, while the other one looked brand new still.

02-24-2010, 12:35 AM	#5
James McClure One shot, one kill. Join Date: Dec 2007 Location: Saratoga Springs NY Posts: 859	Re: RUST: Windshield rim lower weep holes I agree with Kenny and would drill them out. Jim __________________ 1984 K20 350M engine with 465,000 miles. Well, it's finally done!! Almost 2 years of work, but it was really worth the effort. Little stuff left to do is mount winch, wet sand & buff out and build belly pan\running boards. Body work takes lots and LOTS of beer!!!! God, Guts and Guns made America and God, Guts and Guns will preserve it! The worst thing you could do is get into my sights, but that don't matter, you'll never know it, cause you'll never hear the shotJim or Paladin whichever you choose.



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