Automotive type help

You can talk about anything here

Moderator: Akira

Post Reply
User avatar
BD
First Veteran
Posts: 1757
Joined: Wed Feb 26, 2003 12:01 am
Location: OC, CA
Contact:

Automotive type help

Post by BD »

Maybe someone who works on cars a lot or knows someone who does can help?

I took apart the master cylinder on an old motor cycle I am working on which sat for quite a while and managed to develop some rust inside the reservoir. There’s not really any pitting just some small areas where I can see rust.

Do I
A: Try to scrape it out
B: Spend $120+s/h to replace it
C: Ignore it because Brake fluid will have no further negative effects on it

Is there some chemical that won't hurt the brake parts but will kill the rust?
Image
Image
Image
User avatar
warf
Posts: 1067
Joined: Wed Feb 26, 2003 7:15 pm
Location: Clan Curmudgeon

Post by warf »

Brake part cleaner?

Glass bead blast, then brake part cleaner?
North Carolina Sunday Hunting: http://www.ncdeer.net

Can't you feel our souls ignite
Shedding ever changing colours,
in the darkness of the fading night,
Like the river joins the ocean,
as the germ in a seed grows
We have finally been freed to get back home.
User avatar
BD
First Veteran
Posts: 1757
Joined: Wed Feb 26, 2003 12:01 am
Location: OC, CA
Contact:

Post by BD »

Will glass bead blasting work if it's inside where the rust is? This is it, 6" left to right

Image
Image
Image
Image
User avatar
(V)OPAR[CotC]
Legion 2 - CS:S
Posts: 112
Joined: Thu Mar 17, 2005 10:00 pm
Location: las vegas
Contact:

Post by (V)OPAR[CotC] »

brake cleaner and get all that you can out then add brake fluid, bleed the brakes very will
Image
User avatar
warf
Posts: 1067
Joined: Wed Feb 26, 2003 7:15 pm
Location: Clan Curmudgeon

Post by warf »

Bead blast mey change the inside of the cylinder, so it may not be a good idea.

I think if it's not pitted, Vopars seems like a good try,


Have you looked for a used on at a junkyard?
North Carolina Sunday Hunting: http://www.ncdeer.net

Can't you feel our souls ignite
Shedding ever changing colours,
in the darkness of the fading night,
Like the river joins the ocean,
as the germ in a seed grows
We have finally been freed to get back home.
User avatar
BD
First Veteran
Posts: 1757
Joined: Wed Feb 26, 2003 12:01 am
Location: OC, CA
Contact:

Post by BD »

Brake cleaner... oddly enough I never thought of using that on anything other than the service rifle... heh. Thanks!
Image
Image
Image
User avatar
Rico
Posts: 1901
Joined: Wed Feb 26, 2003 6:16 pm
Location: The Abyss
Contact:

Post by Rico »

If the rust isn't in the area where the piston moves, no problem.

Some brake cleaner and piston seals don't get along.

Lukestr would know much more about this. Maybe Dave can help you to get ahold of him???
Rico[CotC]
Veteran
Image
User avatar
KrAzYdAvE
Posts: 2121
Joined: Wed Feb 26, 2003 12:35 am

Post by KrAzYdAvE »

Naval Jelly eats rust (not the crap in your belly button after a long run either!)... though I don't remember where you can find that stuff anymore.
other than that, a small wire brush (not steel!) will do, then clean it with brake cleaner to get all the remnants out.
And as Rico said, as long as it's not in a place where the piston rubs, you should be fine.
Oh yeah, and keep the brake cleaner away from the rubber... it'll fux0r it
User avatar
BD
First Veteran
Posts: 1757
Joined: Wed Feb 26, 2003 12:01 am
Location: OC, CA
Contact:

Post by BD »

Replacement wheel cylinders are installed.
Master cylinder is completely apart and soaked in fluid. Tomorrow I'l douse it in Jelly (I have some) overnight.

Do I need to give it a bath between Jelly and Brake Cleaner? like some Orange fizzie balls and alberto VO5 or just spray on the cleaner?
Image
Image
Image
User avatar
KrAzYdAvE
Posts: 2121
Joined: Wed Feb 26, 2003 12:35 am

Post by KrAzYdAvE »

leave the jelly on for only 10-15 maybe 20 minutes then rinse it off with water. I wouldn't do it overnight or it'll be like scraping dried cake frosting from your jeans the next morning. Then use the brake cleaner to get anything that's left and dip it in the brake fluid again to keep the rust off.
Post Reply