Avoid rust rear fender - MAZDASPEED3

[Atomic41]

I got rust on my rear fender.

I will repair it with a pro in this domain ... but if I want to avoid rust after this job. What can I modify to help.

I already apply an anti-rust every year (KROWN - one of the best), wash my car every week during summer and every 1 - 2 weeks during winter.

I'm detailling my car every spring and seal it 2 times a year.

I will try to smooth the rear plastic bumper. Maybe with the vibration of it, it rub againt the paint of the rear fender. Changer the rear bolt that hold the bumper with the body to avoid the movement of the rear bumper.

Let see if you have better idea.

[CaptainCode]

I just paid to have mine fixed. Sand blasted to bare metal and repainted. Some other rust with the bumper mounts and stone chips in other areas were fixed as well. The guy put some clear tape between the bumper and the body panel. He said the vibration causes the issue. I'm hoping the tape will eliminate much of the vibration contact but I'm interested in other solutions as well.

[CaptainCode]

See this is where I had rust repaired. You can see the one side post sandblasting and post painting. You can see below the fuel door was where the bumper rubs on mine. Same on the other side but not quite as bad(had it fixed at the same time though).

[Atomic41]

Perfect !

I will do the same ... both side at the same time. But when you talk about the clear tape between the bumper and the body ... you can't see it from the outside ... the clear tape is just fitting the larger of the bumper section under the body ???

[CaptainCode]

The tape is basically between the bumper and the body panel where it is touching which caused the rusting issue in the first place. It's right at the end if the bumper by the wheel well where it was sand blasted.

I'm going to look into getting some more durable 3M film or something. The tape isn't visible unless you look hard since it's cut so it doesn't stick out past the panel.

[Xerxes]

Originally Posted by CaptainCode See this is where I had rust repaired. You can see the one side post sandblasting and post painting. You can see below the fuel door was where the bumper rubs on mine. Same on the other side but not quite as bad(had it fixed at the same time though).

Where did you get it repaired? I've got rust starting and it's freaking me out. I'm in Brampton, Ontario and don't mind a little drive. As Long as it's done with amazing care and work. Would really like some help. And any idea on how much they charged you?

[CaptainCode]

Originally Posted by Xerxes Where did you get it repaired? I've got rust starting and it's freaking me out. I'm in Brampton, Ontario and don't mind a little drive. As Long as it's done with amazing care and work. Would really like some help. And any idea on how much they charged you?

I got it repaired in a body shop in London. The guy has been off work for a while though because he tore his rotator cuff. I think any good body shop can fix it though. He charged me $800 which is a lot but it took care of the problem(so far).

[Atomic41]

Originally Posted by CaptainCode See this is where I had rust repaired. You can see the one side post sandblasting and post painting. You can see below the fuel door was where the bumper rubs on mine. Same on the other side but not quite as bad(had it fixed at the same time though).

How your paint job do across the winter season ... does it peel or do you see some rust anywhere ???

Mine already peel and I see rust around all the both rear fender ... and I use 3M tape around all the fender ... it's so bad

[CaptainCode]

Originally Posted by Atomic41 How your paint job do across the winter season ... does it peel or do you see some rust anywhere ??? Mine already peel and I see rust around all the both rear fender ... and I use 3M tape around all the fender ... it's so bad

It actually held up fine so far. No bubbling, peeling or anything on the repainted spots.

[Atomic41]

Do you have 3m tape all around the fender

Envoyé de mon HTC One X

[CaptainCode]

Originally Posted by Atomic41 Do you have 3m tape all around the fender Envoyé de mon HTC One X

Not the whole fender but I do have some tape between the parts where the fender and bumper touch

I got it done before there was a lot of rust. It was just starting to be visible through the paint. So maybe it wasn't too bad to the point where it'll come back quickly.

[Atomic41]

What is the best technique to repair my rear fender (product, step, finalisation)

Because I need to repair again my rear fender and I really want the best method to solve this problem for a long run. We got rough winter here with salt, rock, ice, snow, -35C and sometimes +5C during the same week in winter ...

So if somebody work in a body shop and know something in this world can you help me with your knowledge please.

Thanks

[Tommy_y0]

I'm curious to hear back on this as well. I'm in Minnesota and this is most definitely an issue for me. My back left drivers door is beginning to bubble underneath and I will be needing to get it repaired this coming summer.

[aviator79]

MS6 has same issue where the bumper rubs the fender. I tried to use paint bens to fix where paint had rubbed off but it looks like it didn't hold up so I sprayed with LPS3.

[furinax]

Anyone ever try the rust dissolver/neutralizers? I bought some but have not yet applied it to the car. I figure it would be worth to try after the winter.

[Balthazar]

They sort of work if you let a part soak in it. But just spraying it on a rusted panel or seam won't do squat. Take it from me on these cars, once you have rust bubbles get it repaired quick and well if you care about the look of the car in 2 years.

[Atomic41]

Originally Posted by CaptainCode Not the whole fender but I do have some tape between the parts where the fender and bumper touch I got it done before there was a lot of rust. It was just starting to be visible through the paint. So maybe it wasn't too bad to the point where it'll come back quickly.

What the job look like now after a few years ??? is it perfect again

Thanks for your feedback

[Atomic41]

Someone try POR-15 in their rear fender to avoid to coming back again !?!?!

[CaptainCode]

Originally Posted by Atomic41 What the job look like now after a few years ??? is it perfect again Thanks for your feedback

No actually it's coming back again. The paint is starting to bubble now on both sides where it was originally starting to rust before. Not going to fix it again because there is some worse rust on the fender in front of the rear wheel and it's starting to deform the metal. So it got me a couple of years but that's all.


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[MikeBavaro]

Originally Posted by Atomic41 Someone try POR-15 in their rear fender to avoid to coming back again !?!?!

I POR'd my undercarriage last year, and re apply every 6 months where needed. Absolutely zero rot, just some surface rust here and there

[Atomic41]

Originally Posted by CaptainCode No actually it's coming back again. The paint is starting to bubble now on both sides where it was originally starting to rust before. Not going to fix it again because there is some worse rust on the fender in front of the rear wheel and it's starting to deform the metal. So it got me a couple of years but that's all. Sent from my iPhone using Tapatalk

What will you do with this rust ... change car or try another technique to remove it ???

[Atomic41]

Can I go with these if I want to cut my oem rusty rear fender and install fresh new one

Here the part number :

VARIOUS MFR RRP3762
VARIOUS MFR RRP3761

More Information for VARIOUS MFR RRP3762
More Information for VARIOUS MFR RRP3761

Thanks for your help

[CaptainCode]

Originally Posted by Atomic41 What will you do with this rust ... change car or try another technique to remove it ???

Just going to leave it. Too much cost to cut out the metal and weld in new plus paint again


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[Atomic41]

Originally Posted by Atomic41 Can I go with these if I want to cut my oem rusty rear fender and install fresh new one Here the part number : VARIOUS MFR RRP3762 VARIOUS MFR RRP3761 More Information for VARIOUS MFR RRP3762 More Information for VARIOUS MFR RRP3761 Thanks for your help

Somebody can help me with this ...

Envoyé de mon HTC One M9

[Atomic41]

Using a good level PPG ceramiclear on rear fender to avoid damage to it and final avoid rust do you think it could be a good idea ???

[Atomic41]

Or maybe line x for the under part ... it seem a really Good product to avoid rock chip ... what you Think ???

[stockms3]

I have painted cars on a professional level and the design of our bumpers fucking sucks. Plus, rust protection seems to be shit on mazdas.

I have an 05 mazda 3 and an 07 speed3. Where 3 is already rusted, the speed3 is starting to show rust in exactly same spots. Poor design, lack of paint in certain areas, cracked caulking.

Since speed3 is built and I don't drive it in the winter, I am going to wait till the rust gets bad then get a Texas/Vegas shell. I might be able to pick up a shell for $1k. I could cut the quarters and fix em myself but it is just a band aid.



You could slow down rust with POR-15. However to be honest, one would have to strip the whole suspension, clear all the rust mechanically, spray everything with acid to neutralize the remaining rust and then spray the whole thing with a good quality epoxy primer. Also, at that time you would fix any through rust by welding metal in. It is a shit load of work that I don't think I would do on a econobox.

[greg08]

Originally Posted by furinax Anyone ever try the rust dissolver/neutralizers? I bought some but have not yet applied it to the car. I figure it would be worth to try after the winter.

I've used it and I have 0 rust on my speed 6 ,and I've been in NJ and upstate NY the whole 10 years I've driven it. I use neutralizer and then rust prevention