DSKRALL

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

superlund

Look under the battery for corrosion & rust....

:seeya

paintdaddy

C4s are full frame cars and your thinking of uni-body cars. :seeya

ToniH

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]

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......

DINO

I use a Turkey baseter to drain the hood latch thingy...works great :yesnod: :crazy:

stillthere

drill a hole in the bottom. i did.

CorvetteCoupe93

:iagree:

stinger95

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.

DiabolicalDave

[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.

vettmech

Next time you wash the car take the hose and fill it with water. If it drains your fine ....... if not, make it drain........ :seeya

DSKRALL

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]

dmorris

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.

Jsonova99

I have this problem, haven't had a chance to dig in yet, but what rusts behind it, anything of significance?

dorri732

Just an FYI, the comment thread you replied to is 13 years old.