Evo's Rust Issues [MEGA MERGE]
Sep 29, 2003, 06:54 AM
#121
Hey guys, I know exactly why this is occuring. Any engineer can tell you why just by looking at the kind of rust that is occuring and how it is occuring. This is called "disimilar metal corrosion". It occurs with two materials of different ION charge that stay in touch with each other for prolonged periods of time. A metal with a high ION content will want to transfer positively charged IONS to a metal with less IONS. This occurs most when humidity is present, as the water also will carry an additional positve ION charge. It has nothing to do with the paint and exfoliation will start to occur anyway if this is not treated. I saw some people start painting the cars again, and that is great, but your best bet is the get "Zinc Chromate Primer" from an Aviation store or small aircraft store. This is designed to stop any kind of ION transfer from metals such as steel to galvanized metals and aluminum and such. Sand it back down a lot to get the damaged metal off (not just rust), then spray with Zinc Chromate Primer.
I have a few degrees in engineering and the aicraft industry. trust me on this one.
As usual, Mitsu screwed up again. What else is new.
Goddluck, and I hope this helps!
I have a few degrees in engineering and the aicraft industry. trust me on this one.
As usual, Mitsu screwed up again. What else is new.
Goddluck, and I hope this helps!
Sep 29, 2003, 07:48 AM
#122
Originally posted by GaryChios
Hey guys, I know exactly why this is occuring. Any engineer can tell you why just by looking at the kind of rust that is occuring and how it is occuring. This is called "disimilar metal corrosion". It occurs with two materials of different ION charge that stay in touch with each other for prolonged periods of time. A metal with a high ION content will want to transfer positively charged IONS to a metal with less IONS. This occurs most when humidity is present, as the water also will carry an additional positve ION charge. It has nothing to do with the paint and exfoliation will start to occur anyway if this is not treated. I saw some people start painting the cars again, and that is great, but your best bet is the get "Zinc Chromate Primer" from an Aviation store or small aircraft store. This is designed to stop any kind of ION transfer from metals such as steel to galvanized metals and aluminum and such. Sand it back down a lot to get the damaged metal off (not just rust), then spray with Zinc Chromate Primer.
I have a few degrees in engineering and the aicraft industry. trust me on this one.
As usual, Mitsu screwed up again. What else is new.
Goddluck, and I hope this helps!
Hey guys, I know exactly why this is occuring. Any engineer can tell you why just by looking at the kind of rust that is occuring and how it is occuring. This is called "disimilar metal corrosion". It occurs with two materials of different ION charge that stay in touch with each other for prolonged periods of time. A metal with a high ION content will want to transfer positively charged IONS to a metal with less IONS. This occurs most when humidity is present, as the water also will carry an additional positve ION charge. It has nothing to do with the paint and exfoliation will start to occur anyway if this is not treated. I saw some people start painting the cars again, and that is great, but your best bet is the get "Zinc Chromate Primer" from an Aviation store or small aircraft store. This is designed to stop any kind of ION transfer from metals such as steel to galvanized metals and aluminum and such. Sand it back down a lot to get the damaged metal off (not just rust), then spray with Zinc Chromate Primer.
I have a few degrees in engineering and the aicraft industry. trust me on this one.
As usual, Mitsu screwed up again. What else is new.
Goddluck, and I hope this helps!
Sep 29, 2003, 10:00 AM
#124
Originally posted by strat
Except the body construction section of the shop manual shows both parts as steel w/o zinc coating.
Except the body construction section of the shop manual shows both parts as steel w/o zinc coating.
If you take both pieces to a metalurgy lab, they can analize for you.
Trust me, I know this subject very well, and I use to do Aircraft Inspections, and this can be a common problem.
Sep 29, 2003, 11:10 AM
#125
What about up front where it's plastic and metal contact?
https://www.evolutionm.net/forums/sh...ht=intake+rust
https://www.evolutionm.net/forums/sh...ht=intake+rust
Sep 29, 2003, 11:27 AM
#126
Originally posted by n00dle
What about up front where it's plastic and metal contact?
https://www.evolutionm.net/forums/sh...ht=intake+rust
What about up front where it's plastic and metal contact?
https://www.evolutionm.net/forums/sh...ht=intake+rust
Thanks
-Gary A
Sep 29, 2003, 04:06 PM
#127
Originally posted by n00dle
What about up front where it's plastic and metal contact?
https://www.evolutionm.net/forums/sh...ht=intake+rust
What about up front where it's plastic and metal contact?
https://www.evolutionm.net/forums/sh...ht=intake+rust
Sep 30, 2003, 09:00 AM
#128
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Has anyone gone to their dealer about this? And what has the dealer said to you? I plan on checking out my car as soon as I can (Silver Evo, 5/2003 build date) I bet you it's rusted. I'm going to check the paint/corrosion warantee. Car does not even have 1000 miles on i!!! We could probably get a class action suit againt Mitsu for this. I had a 1997 Eclipse GSX for almost 7 years, not one spot of rust on it, affter sitting in many NY winters.
Sep 30, 2003, 11:04 AM
#129
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These issues should be addressed period!
recall is eminant.
You shouldnt be dealing with this at all.. contact the dealer for all of us .
cheers
gino
recall is eminant.
You shouldnt be dealing with this at all.. contact the dealer for all of us .
cheers
gino
Oct 3, 2003, 04:44 PM
#131
Originally posted by strat
How is this occuring?
How is this occuring?
Thus raw metal is bolted to raw metal then the assembly is dipped. Some of the interface is coated while portions are not. The material is not able to fully penetrate the interface. Over time water is able to penetrate the interface and rust occurs.
You can bet that Mitsubishi knows exactly what is occurring from these pictures given they know the production work instructions. Now how long will it take for someone to admit to this? My bet is never....
Last edited by strat; Oct 3, 2003 at 04:47 PM.
Oct 3, 2003, 06:13 PM
#133
Can anyone come up with other areas that may have rust potentially building up. So far it's the rear bumper beam that is being noted by many here. Has anyone checked the front bumper beam to see if there's rust there?
Oct 3, 2003, 06:19 PM
#134
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If a sufficient amount of owners write to the NHTSA, they will start an investigation. If they find that the rust negatively affects the bumper assembly integrity (duh) they will likely rule it a safety hazard and require a recall.
So, forget the lawsuit stuff, just write to the NHTSA. More effective and forces real action by
to improve their production process.
So, forget the lawsuit stuff, just write to the NHTSA. More effective and forces real action by
to improve their production process.
