Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 02-15-2018, 06:47 PM   #1
albjerryg
Senior Member
 
Join Date: May 2012
Location: Lafayette, La.
Posts: 181
Default Sealent use with brake fluid

I have one of the remote reservoirs for underside of the car and it leaks, I have talked to the manufacture and they sent another on and it leaks also. I tried seal all and no luck. Do you know of a sealant or RTV that can be use with brake fluid. I have enclosed a picture of one not the same company that I got mine but look like it. maybe I should just buy there's . Thanks Jerry
Attached Images
File Type: jpg s-l400M1WZCJF6.jpg (23.1 KB, 51 views)

Last edited by albjerryg; 02-15-2018 at 08:31 PM. Reason: add picture
albjerryg is offline   Reply With Quote
Old 02-15-2018, 07:03 PM   #2
corvette8n
Senior Member
 
corvette8n's Avatar
 
Join Date: Jul 2010
Location: 36 miles north of Albany NY
Posts: 2,931
Default Re: Sealent use with brake fluid

Where exactly is it leaking do you have pictures?
corvette8n is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 02-15-2018, 08:13 PM   #3
albjerryg
Senior Member
 
Join Date: May 2012
Location: Lafayette, La.
Posts: 181
Default Re: Sealent use with brake fluid

It has a thick rubber gasket that fit between the master cylinder and top cap. It is dripping around the rubber gasket and top cap. Thanks jerry
albjerryg is offline   Reply With Quote
Old 02-15-2018, 08:22 PM   #4
albjerryg
Senior Member
 
Join Date: May 2012
Location: Lafayette, La.
Posts: 181
Default Re: Sealent use with brake fluid

It is more like it seeps out around the rubber seal and you get drop running down the master cylinder. I can try and take a picture tomorrow but I don't think it will show anything it so slow, Jerry
albjerryg is offline   Reply With Quote
Old 02-15-2018, 09:17 PM   #5
Randy in ca
Senior Member
 
Randy in ca's Avatar
 
Join Date: May 2010
Posts: 1,628
Default Re: Sealent use with brake fluid

Was going to ask how close to the top were you filling it, but then realized the picture shows a remote fill system, so I guess this was a useless post by me!!!

Last edited by Randy in ca; 02-15-2018 at 09:23 PM.
Randy in ca is offline   Reply With Quote
Old 02-15-2018, 09:40 PM   #6
Jack E/NJ
Senior Member
 
Jack E/NJ's Avatar
 
Join Date: May 2010
Posts: 2,171
Default Re: Sealent use with brake fluid

Sponsored Links (Register now to hide all advertisements)
Is the top cap metal or plastic? You might want to try to bend the bails a bit so that they press harder against the cap. Jack E/NJ
Attached Images
File Type: jpg topcap.jpg (3.5 KB, 222 views)
Jack E/NJ is offline   Reply With Quote
Old 02-15-2018, 10:46 PM   #7
FlatheadTed
Senior Member
 
FlatheadTed's Avatar
 
Join Date: May 2010
Location: Auckland
Posts: 4,691
Send a message via AIM to FlatheadTed
Default Re: Sealent use with brake fluid

I don't see that design working that well ,should have mutable fixings like a pan gasket
__________________
http://www.flatheadted.com


Flathead Ted brake Floaters ,
FlatheadTed is offline   Reply With Quote
Old 02-15-2018, 11:09 PM   #8
Talkwrench
Senior Member
 
Talkwrench's Avatar
 
Join Date: Aug 2012
Location: Perth, Western Australia
Posts: 2,687
Default Re: Sealent use with brake fluid

Ohh boy I don't think that's a good idea at all with that type of M / cyl ..
__________________
"Came too close to dying to stop living now!"
Talkwrench is offline   Reply With Quote
Old 02-16-2018, 12:27 AM   #9
Russ/40
Senior Member
 
Russ/40's Avatar
 
Join Date: May 2010
Location: Santee, California
Posts: 3,505
Default Re: Sealent use with brake fluid

If your using DOT 5, nothing will stop the leak in that setup.
Russ/40 is offline   Reply With Quote
Old 02-16-2018, 12:31 AM   #10
51 MERC-CT
Senior Member
 
51 MERC-CT's Avatar
 
Join Date: May 2010
Location: East Hartford, Ct
Posts: 5,898
Default Re: Sealent use with brake fluid

Had a similar situation and made my own remote fill cover that tightened down using threaded rod and aluminum plate.
Needless to say, it never leaked again. ( THE SYSTEM IS USING DOT 5 )

Attached Images
File Type: jpg a.jpg (60.1 KB, 169 views)
File Type: jpg b.jpg (34.8 KB, 167 views)
__________________
DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES

Last edited by 51 MERC-CT; 02-16-2018 at 05:55 AM.
51 MERC-CT is offline   Reply With Quote
Old 02-16-2018, 08:32 AM   #11
richard crow
Senior Member
 
Join Date: May 2010
Posts: 1,764
Default Re: Sealent use with brake fluid

i have that set up shown on the first post. it has never leaked a drop. i am using dot 5. may be the top of the master cylinder is uneven.
richard crow is offline   Reply With Quote
Old 02-16-2018, 08:40 AM   #12
swanwaco32
Senior Member
 
Join Date: May 2010
Location: KC
Posts: 266
Default Re: Sealent use with brake fluid

If it is a rebuilt master cylinder they get tumbled to clean them and may have small imperfections on the gasket surface?
swanwaco32 is offline   Reply With Quote
Old 02-16-2018, 09:34 AM   #13
albjerryg
Senior Member
 
Join Date: May 2012
Location: Lafayette, La.
Posts: 181
Default Re: Sealent use with brake fluid

it is the aluminum top and I am just going to by the new set up I show in the picture and try that one. I am using Dot 3 brake fluid. thanks jerry
albjerryg is offline   Reply With Quote
Old 02-16-2018, 10:33 AM   #14
JSeery
Member Emeritus
 
JSeery's Avatar
 
Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
Default Re: Sealent use with brake fluid

I wouldn't think the aluminum top and/or gasket would be the issue. It is a lot more likely that the top of the master cylinder would be where the problem would be. The master cylinder is not designed to have a seal with the fluid level all the way to the top and also under some pressure. It is going to have to have a good sealing surface on the master cylinder and then enough clamping pressure on the cover to get a good seal.
JSeery is offline   Reply With Quote
Old 02-16-2018, 10:40 AM   #15
itslow
Senior Member
 
itslow's Avatar
 
Join Date: May 2010
Location: Central Iowa
Posts: 687
Default Re: Sealent use with brake fluid

Use a master cylinder that's designed to use a remote reservoir.

The master cylinder shown in the original post is not such a design. As noted by JSeery, it's not designed to have fluid above its machined cap surface.

http://www.wilwood.com/MasterCylinde...ter%20Cylinder
__________________
Mike

Wanted:
- '32-34 Open Cab Pickup (RPU) parts and documents/articles/info
- ARDUN parts
itslow is offline   Reply With Quote
Old 02-16-2018, 11:38 AM   #16
Russ/40
Senior Member
 
Russ/40's Avatar
 
Join Date: May 2010
Location: Santee, California
Posts: 3,505
Default Re: Sealent use with brake fluid

Quote:
Originally Posted by richard crow View Post
i have that set up shown on the first post. it has never leaked a drop. i am using dot 5. may be the top of the master cylinder is uneven.
My experience was on an off road vehicle and it never dripped but constantly weeped. The bail never was secure enough to stop the weep, probably due to off camber issues. I'm sure 51 Mercs solution would have solved the problem with the proper gasket.
Russ/40 is offline   Reply With Quote
Old 02-16-2018, 09:45 PM   #17
albjerryg
Senior Member
 
Join Date: May 2012
Location: Lafayette, La.
Posts: 181
Default Re: Sealent use with brake fluid

OK thanks for the info. Jerry
albjerryg is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 10:33 AM.