C4 Rust problems
Thread Starter
Instructor
Joined: Dec 2002
Posts: 238
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C4 Rust problems
1.Although I expect that C4s are more corrosion resistant than C3s because they were better protected from the factory, what areas are most prone to rust?
2. Can a boroscope be used to inspect the inside of the frame and areas of the unit body (I apologize if unit body is the wrong term)?
3. Are replacement frames and unit body parts available?
Thank you
2. Can a boroscope be used to inspect the inside of the frame and areas of the unit body (I apologize if unit body is the wrong term)?
3. Are replacement frames and unit body parts available?
Thank you
Melting Slicks
Joined: May 2000
Posts: 2,029
Likes: 63
Re: C4 Rust problems (DSKRALL)
C4's do have galvanized frames so they are not prone to rusting unless there is battery leak that has been unnoticed for some time.
Only rust I've seen on my Vette is the inside support of windlace seal which totally rusted away between the door and dashboard. It was 2 minute job to replace the seals with new ones.
Regards,
Toni
[Modified by ToniH, 5:05 PM 1/7/2003]
Only rust I've seen on my Vette is the inside support of windlace seal which totally rusted away between the door and dashboard. It was 2 minute job to replace the seals with new ones.
Regards,
Toni
[Modified by ToniH, 5:05 PM 1/7/2003]
Drifting
Joined: Feb 2000
Posts: 1,994
Likes: 0
From: Charleston, WV
Re: C4 Rust problems (ToniH)
The steel brackets that the hood latches to can and will rust if allowed to fill with water. Some are welded together in such a way tha water drains but others have a good seal and retain water. There is a kit to remedy this but I found that my left one drained quite well while the right one would fill .......... soooooooooo I drilled a 1/8 inch weep hole in the bottom outside where I could get to it and when I wash the car I flush both of them . If the water doesn't drain I do whatever is neccessary to get it to drain......
Safety Car
Joined: Feb 2000
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From: Howell N.J. Home of Redgar
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Re: C4 Rust problems (vettmech)
The steel brackets that the hood latches to can and will rust if allowed to fill with water. Some are welded together in such a way tha water drains but others have a good seal and retain water. There is a kit to remedy this but I found that my left one drained quite well while the right one would fill .......... soooooooooo I drilled a 1/8 inch weep hole in the bottom outside where I could get to it and when I wash the car I flush both of them . If the water doesn't drain I do whatever is neccessary to get it to drain......
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Drifting
Joined: Mar 2002
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From: lakeview new york
Cruise-In IV Veteran
Re: C4 Rust problems (DSKRALL)
If a salt mixture is used in your area, the first first thing you will notice the effects on would be bare aluminum. Then clear-coated aluminum and steel (galvanized and/or painted) If it's bare aliminum you will see pitting in the aluminum itself. If it's clear-coated aluminum the effects are rather ugly. The salt will attack any defect ( crack or chip) and proceed to ruin the surrounding metal and clear-coat. On steel you will see rust forming at the wlds.
Drifting
Joined: Apr 2001
Posts: 1,926
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From: Portugal
Re: C4 Rust problems (vettmech)
[QUOTE]The steel brackets that the hood latches to can and will rust if allowed to fill with water. Some are welded together in such a way tha water drains but others have a good seal and retain water. QUOTE]
After reading this, I ran out and checked mine. Absolutely no rust, and I drive it alot including in the rain, and it has around 74,000 miles right now. I guess I don't need to worry about it? Or, should I go ahead and drill the little hole on the passenger side? The driver side already has the little hole. Since there's no rust, I'm actually kind of hesitant to drill a hole which might actually give rust a place to start.
After reading this, I ran out and checked mine. Absolutely no rust, and I drive it alot including in the rain, and it has around 74,000 miles right now. I guess I don't need to worry about it? Or, should I go ahead and drill the little hole on the passenger side? The driver side already has the little hole. Since there's no rust, I'm actually kind of hesitant to drill a hole which might actually give rust a place to start.
Thread Starter
Instructor
Joined: Dec 2002
Posts: 238
Likes: 1
Re: C4 Rust problems (paintdaddy)
I knew unit body was the wrong term, but I didn't know the right one for the central structure to which the body is attached. It's called the birdcage on C3s, of course. Thanks for your reply, and thanks to everyone who helped to answer my questions. D.S. Krall
[Modified by DSKRALL, 7:20 PM 1/10/2003]
[Modified by DSKRALL, 7:20 PM 1/10/2003]
Instructor
Joined: Sep 2002
Posts: 185
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From: Rocky Mount NC
Re: C4 Rust problems (DSKRALL)
On my 85, the metal brace that attaches to the front, inner portion of the hood ( that the hinges attach to) is rusted some. Mostly on the passenger side. It looks like just the front edge, but it is rusted pretty good ( metal gone in a couple of places). The area missing is at the very front where it turns down, I guess to brace the front edge of the hood. Is this common? I haven't found any other rust.
Instructor
Joined: Apr 2017
Posts: 137
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C4's do have galvanized frames so they are not prone to rusting unless there is battery leak that has been unnoticed for some time.
Only rust I've seen on my Vette is the inside support of windlace seal which totally rusted away between the door and dashboard. It was 2 minute job to replace the seals with new ones.
Regards,
Toni
[Modified by ToniH, 5:05 PM 1/7/2003]
Only rust I've seen on my Vette is the inside support of windlace seal which totally rusted away between the door and dashboard. It was 2 minute job to replace the seals with new ones.
Regards,
Toni
[Modified by ToniH, 5:05 PM 1/7/2003]
