Rust inside the steel frame
Discussion
Last time the car was on the lifting ramp, we noticed something tearing at the back of the steel frame.
Turned out the drops came from the inside, and the tubes at the very back are corroded heavily...
Looks like some odd fluid was catched in there.
I have no idea how it came in,
and how it can eat up the steel in less than 3 years...
I have no idea if the segments and tubes of the frame are closed and if it's just the back that's affected.
I will check the rest of the chassis in december with a probe etc.
Anyone had a similar problem before?
Or do you have an explanation?
Unfortunately I missed to take some photos while it was on the ramp,
but here are some shots to give you an idea:
Left side:
More problematic right side:
Turned out the drops came from the inside, and the tubes at the very back are corroded heavily...
Looks like some odd fluid was catched in there.
I have no idea how it came in,
and how it can eat up the steel in less than 3 years...
I have no idea if the segments and tubes of the frame are closed and if it's just the back that's affected.
I will check the rest of the chassis in december with a probe etc.
Anyone had a similar problem before?
Or do you have an explanation?
Unfortunately I missed to take some photos while it was on the ramp,
but here are some shots to give you an idea:
Left side:
More problematic right side:
GTRCLIVE said:
I wounder if that part of the chassis got scratched badly at some point and you didn't realize. That left uncovered might have roted though maybe....
No, the outside was just fine, until we took a screwdriver and knocked of some bits to increase the hole...That's the thing I don't understand.
On the first look I don't see any way for water to get into that tube.
Especially if the tubes are closed.
And why on the back of the car. It's not the lowest point of the chassis.
The fluid that was leaking reminded us of accumulator acid.
I didn't build the car myself. No idea about the rivets, but there are no rivets at that end of the car.
I will take a closer look tomorrow. Maybe I can spot some holes, bracktes or mounts that could let some water in.
Talked to two different persons today and both gave me the same answer.
Looks like water came into the tube,
and it mixed with the exhaust fumes resulting in acid sulphur.
No idea what that hole is meant for, but that's one way for the water to come in:
Not sure about the transmission mount too:
So far it looks like four pipes are affected.
I will take the car to the mechanic today, and let him fix these 4 pipes.
Looks like water came into the tube,
and it mixed with the exhaust fumes resulting in acid sulphur.
No idea what that hole is meant for, but that's one way for the water to come in:
Not sure about the transmission mount too:
So far it looks like four pipes are affected.
I will take the car to the mechanic today, and let him fix these 4 pipes.
Okay, opened the bottom, and had a first look inside the pipes with a probe.
Situation is as follows (so far):
As supposed, it looks like the bottom 4 pipes only are affected
(red cross in the screen).
Their inside is connected.
So what ever came in, could spread from one to another, but not any further.
Tomorrow I will bring a piece of the corroded steel to a laboratory.
I am confident the analysis will tell what's responsible for the corrosion.
Situation is as follows (so far):
As supposed, it looks like the bottom 4 pipes only are affected
(red cross in the screen).
Their inside is connected.
So what ever came in, could spread from one to another, but not any further.
Tomorrow I will bring a piece of the corroded steel to a laboratory.
I am confident the analysis will tell what's responsible for the corrosion.
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