Is this disc brake safe?

[Veloc]

Hi all.. Just need your opinion here. Preferably those with experience in this please...

I bought a disc brake set to fit into my car about a year ago from a seller in this forum. Suppose to fit it in today but I spotted some problem. It is full of rust. The knuckle, the caliper bracket, the rotor shield (that round thing like a shield don't know what is it called). I don't think it is due to me keeping it for one year because I kept it indoors and I bought another set and kept it for the same period and that set didn't rust. I don't expect new because it is halfcut item, but is this too much?

I am not blaming here. But I want to get some opinion on:
(i) Is it safe to use
(ii) What can I do to solve the problem

Below are some pictures:


At a glance, it is ok. just like any halfcut item

Zoom deeper. Everything is badly corroded and crusty.

Can poke thru the rusty rotor shield with finger.

Part of the rotor shield is already gone. Eaten by the rust. Is this part crucial?

I'm worried about the caliper bracket too. The rust is so thick that it formed layers of flakes.

So... Can use? Any ways to solve this?

 

[LesleyAprotto]

Dear Veloc,

From the photos I think its worth throwing it away....

Dont compromise safety for that small sum of money....

Sorry if my frank opinion offended you...

Also dont understand how it can be that rusty...

Salvaged from the sea? hahaha....

 

[VTEC LoVeR]

Dear Veloc,

From the photos I think its worth throwing it away....

Dont compromise safety for that small sum of money....

Sorry if my frank opinion offended you...

Also dont understand how it can be that rusty...

Salvaged from the sea? hahaha....

Agree with you bro...

 

[YYC]

It looks like a Titanic salvage.

 

[DarkAccoon]

i think the rotor shield is there to protect your rotors from stones and stuffs. I have seen cars with disc brakes without them. Practicality wise, no idea.

The thread seems to be pretty rusted as well and these are critical points. As Lesley said, best to scrap this away and get another set. This is not useable anymore and should not be on the road. Think of your love ones, yourself and other road users as well.

 

[BuroQ]

It looks like a Titanic salvage.

Well at least a Titanic Salvage has waaaaayyyy more value than that. Anyway, it is a shame and loss on what you purchase couldn't be used at all. I have no personal experience with these issues, but judging from the picture, the disc brake set is beyond repairable.

By the way, are the rust that bad on both of those disc brake set or just one side?

 

[Veloc]

Thanks for everyone's frank opinion. Hmm... Anymore? No one can tell me that it is repairable? If really like that, I might throw it.

Well at least a Titanic Salvage has waaaaayyyy more value than that. Anyway, it is a shame and loss on what you purchase couldn't be used at all. I have no personal experience with these issues, but judging from the picture, the disc brake set is beyond repairable.

By the way, are the rust that bad on both of those disc brake set or just one side?

Both are rusted. Just that one side is more severe. Screw that seller. Costed me rm 450.

 

[ronaldindin]

better not to risk your life. seek for a new one bro

 

[Izso]

Veloc, that shield is easily replaceable. Spare parts shop only.

For the rest, I suggest lots of WD40 and dismantling evertyhing. Then sandpaper off the rusted parts then you can see how bad is the damage. It could be just the paint that's chipping off. Don't try to repair it if it is badly rusted underneath (there's some rust convertors out there, but mostly used for car body parts) but if it's just surface - I'd use it. The bracket is a customized fit for your car? If yes - redo that bracket la. One piece change is better than buying a whole new set.

Personally I'd try to salvage what I can and just buy what I need to replace.

 

[arturo]

agreed with Izso. sometimes rust looks way more than is actually there. clean away all the rust either by bead/sand blasting or lots of elbow grease and then only see if the metal is really worn out. after all the rust is cleaned, u'll need to go find metal crack penetrant dye and stain the entire assembly to see if there are any cracks in the metal assembly which could have been further eaten by the rust.

The shield is there to prevent oil from leaking shocks or any other source from getting onto the rotors. ever tried wd40-ing somebody's rotors? its like disney on ice until it burns off from friction (theres a sabo method for you. dont say it came from me.). the shield can be bought from halfcut shops...

 

[Veloc]

Veloc, that shield is easily replaceable. Spare parts shop only.

For the rest, I suggest lots of WD40 and dismantling evertyhing. Then sandpaper off the rusted parts then you can see how bad is the damage. It could be just the paint that's chipping off. Don't try to repair it if it is badly rusted underneath (there's some rust convertors out there, but mostly used for car body parts) but if it's just surface - I'd use it. The bracket is a customized fit for your car? If yes - redo that bracket la. One piece change is better than buying a whole new set.

Personally I'd try to salvage what I can and just buy what I need to replace.

Thanks Izso! This is what I had in mind too. Feel so wasting to throw the whole thing without trying to save it. I also plan to remove the rust. But instead of DIY, I'm finding an engineering shop to sandblast it it or remove by using chemical. If not possible, then I DIY... As for the bracket and calipers, I got a spare. So thank you... I think that is what I'll do!

 

[vr2turbo]

Bro., you bought a year ago, means it was in this shape already?
Anyway, try to salvage. The rusted through shield is very thin only, but the other parts are cast iron, so whole thing is solid.
After getting of the surface rust then check the condition again....

 

[pwhyze]

Agree with Izso. It's hard to tell when it comes to rust. Better do a through check first.

The brake shield is not really crucial as some do remove it to save weight. But that's up to you.

 

[^pomen_GTR^]

tedious job to revive this unit back on working condition...

not to mention a lot of sweat,swearing and elbow grease....

might be worthy as junkyard sales and bought another set instead of using this set...

 

[Izso]

tedious job to revive this unit back on working condition...

not to mention a lot of sweat,swearing and elbow grease....

might be worthy as junkyard sales and bought another set instead of using this set...

Aww come on man. Where's your DIY spirit?

Imagine the huge grin on his face and the huge amount of satisfaction if he manages to DIY repair the whole thing and install on his car.

Some of us are DIY-ing not for the money saving, some of us do it for the satisfaction ecstasy!

 

[LesleyAprotto]

tedious job to revive this unit back on working condition...

not to mention a lot of sweat,swearing and elbow grease....

might be worthy as junkyard sales and bought another set instead of using this set...

I agree with you 100%

Correct me if Im wrong, from the look of the photos, I think the metal is damn rusted and could
be as crispy as a biscuit,

Probably its a waste of time trying to salvage it...

Moreover its a brake part, not worth the risk!

 

[vr2turbo]

DIY is never meant to be a waste of time. Either you make it or your don't and the purpose is try....

 

[^pomen_GTR^]

Aww come on man. Where's your DIY spirit?

Imagine the huge grin on his face and the huge amount of satisfaction if he manages to DIY repair the whole thing and install on his car.

Some of us are DIY-ing not for the money saving, some of us do it for the satisfaction ecstasy!

hehehehe...


is ask me sure can revive....but up to the owner lorrr...

especially if the disc set was rare unit.....for sure we do what we can do to revive that.....

 

[weu250]

Veloc, that shield is easily replaceable. Spare parts shop only.

For the rest, I suggest lots of WD40 and dismantling evertyhing. Then sandpaper off the rusted parts then you can see how bad is the damage. It could be just the paint that's chipping off. Don't try to repair it if it is badly rusted underneath (there's some rust convertors out there, but mostly used for car body parts) but if it's just surface - I'd use it. The bracket is a customized fit for your car? If yes - redo that bracket la. One piece change is better than buying a whole new set.

Personally I'd try to salvage what I can and just buy what I need to replace.

I agree with Izso as well.... Sometime the rust may look worse than actually is

My brother had some tool rusting in his car boot sometime ago... His Satria the boot banjir and he did not notice it. Anyway he wanted to chuck it all off.

So I had some black oil that was drained from my car in a container that I plan to throw as well and decide to chuck those tools inside.

Long story short, after a week when I wanted to get rid of the oil. I notice all the tools was clean from rust due to the submerging in the black oil. Clean it up and it look good. Those tools are still in use 4 years down the road now...

 

[Veloc]

Some updates here... Due to what the mighty DIY legend, Izso has spoken, thus I took heeded the decree and try to save it...

Here are some pictures... Limited pictures because i always forgot to snap after pictures. Too much into the job.

Got myself 2 metal brushes form the hardware shop. One super hard one and another a bit mroe flexible. I started off with the hard one and used the flexible one where spaces are tight.

A lot of hours brushing... Can you see the difference.. The front part of tis is brushed. The one close to the centre is not brushed yet

The amount of iron dust from both sides knuckle, rotor shield, caliper, caliper bracket and so on. I don't know how much have I inhaled.

The crusty layers of rust were gone. But the whole thing still has that orangey rust colour. So I treated it with a generous amount of Iron-X to dissolved the rust off...

Not 100% gone. The orangey colour is still there. But significantly reduce.

This is the after pics of the severely rusted knuckle.

For these parts, I decided to bring it to an engineering shop to have it properly machine sanded/filed as there are still traces of rust colour. Don't feel good about it as these are vital parts. My hand is so **** sore now from 2 hours of brushing...