...

Go Back   Lateral-g Forums > Technical Discussions > Brakes
User Name
Password



Reply
 
Thread Tools Display Modes
  #1  
Old 04-19-2017, 07:34 PM
vstol vstol is offline
Senior Member
 
Join Date: Jul 2005
Posts: 524
Thanks: 0
Thanked 13 Times in 10 Posts
Default Wilwood Master Brake Cylinder will not stop leaking

I have a manual Wilwood Master brake cylinder and the front port and line leaks and I can not get it to stop. Wilwood said to wrap the adapter with tape three wraps and that has not worked and I have had 4 brakes lines going into it. Very hard to tell where its leaking, I am suspecting the line is not seating properly or the adapter is defective. Wilwood said they never had this happen, yea right. I am calling Wilwood again tomorrow for another adapter but... and ideas? Thanks
Reply With Quote
  #2  
Old 04-20-2017, 04:48 PM
vstol vstol is offline
Senior Member
 
Join Date: Jul 2005
Posts: 524
Thanks: 0
Thanked 13 Times in 10 Posts
Default

new Master Cylinder on its way.. thanks
Reply With Quote
  #3  
Old 04-20-2017, 10:52 PM
rustomatic rustomatic is offline
Senior Member
 
Join Date: Apr 2014
Location: ATL
Posts: 746
Thanks: 11
Thanked 57 Times in 35 Posts
Default

That's good market awareness! On that note, from what I've experienced, it's always frowned upon to put thread tape on brake fittings . . .

On another note, I've seen brake system leaks go away with usage (heat & expansion), which can be hard to apply with a minimally used fun-car . . .

Good on Wilwood (I have their stuff, too!) for stepping up and trying to put the fire out!
Reply With Quote
  #4  
Old 04-20-2017, 11:21 PM
Vegas69's Avatar
Vegas69 Vegas69 is offline
Senior Member
 
Join Date: Dec 2006
Posts: 8,663
Thanks: 86
Thanked 210 Times in 119 Posts
Default

Bad master seat or line flare, what else could it be?
__________________
Todd
Reply With Quote
  #5  
Old 04-21-2017, 08:39 PM
vstol vstol is offline
Senior Member
 
Join Date: Jul 2005
Posts: 524
Thanks: 0
Thanked 13 Times in 10 Posts
Default

The Teflon tape for the adapter going into the MC is Wilwoods recommendation, it is not on the brake line. I tried 4 brake lines (store bought not made) and it still leaked. Something was just a little off (milled)
Reply With Quote
  #6  
Old 06-10-2017, 01:17 PM
speed_m5 speed_m5 is offline
Member
 
Join Date: Apr 2013
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
Default

never use thread tape on aluminum it acts like lube and you will split the bore
Reply With Quote
  #7  
Old 06-11-2017, 05:41 AM
vstol vstol is offline
Senior Member
 
Join Date: Jul 2005
Posts: 524
Thanks: 0
Thanked 13 Times in 10 Posts
Default

Quote:
Originally Posted by speed_m5 View Post
never use thread tape on aluminum it acts like lube and you will split the bore
Thanks but as mentioned it was Wilwood recommendation. Got a new MC and it looks like I have it fixed
Reply With Quote
  #8  
Old 06-11-2017, 07:50 AM
dhutton dhutton is online now
Senior Member
 
Join Date: Nov 2006
Location: Mountain Springs, Texas
Posts: 1,857
Thanks: 985
Thanked 448 Times in 247 Posts
Default

Quote:
Originally Posted by vstol View Post
Thanks but as mentioned it was Wilwood recommendation. Got a new MC and it looks like I have it fixed
Glad you finally got it fixed.

Don
Reply With Quote
  #9  
Old 06-11-2017, 08:56 AM
GregWeld's Avatar
GregWeld GregWeld is offline
Lateral-g Supporting Member
 
Join Date: Jul 2005
Location: Scottsdale, AriDzona
Posts: 20,642
Thanks: 504
Thanked 1,076 Times in 384 Posts
Default

Quote:
Originally Posted by vstol View Post
I have a manual Wilwood Master brake cylinder and the front port and line leaks and I can not get it to stop. Wilwood said to wrap the adapter with tape three wraps and that has not worked and I have had 4 brakes lines going into it. Very hard to tell where its leaking, I am suspecting the line is not seating properly or the adapter is defective. Wilwood said they never had this happen, yea right. I am calling Wilwood again tomorrow for another adapter but... and ideas? Thanks



I'm shocked Wilwood (or some idiot that works there) would suggest using tape - or anything else for that matter - in a brake system....

#1 cause of leaks --- OVER TIGHTENING the fittings.... and if they leak - tightening them some more. LOL

Not saying you did this - but other people read these posts - so have to spell it out. The interface of the soft brass conical areas and using double flares or single AN spec flares and stainless steel lines and then CRUSHING them... is where I've always seen the issues. You look down inside and see the brass deformed.... a leaker for sure. No amount of tightening the fitting will fix it.

I always sneak up on these --- snug it - back off - snug a bit more - back off - snug it up tight - without being a gorilla.... The snug/back off - give the two mating surfaces a chance to seat.
Reply With Quote
  #10  
Old 06-11-2017, 04:20 PM
GregWeld's Avatar
GregWeld GregWeld is offline
Lateral-g Supporting Member
 
Join Date: Jul 2005
Location: Scottsdale, AriDzona
Posts: 20,642
Thanks: 504
Thanked 1,076 Times in 384 Posts
Default

Quote:
Originally Posted by dhutton View Post
Hi Greg. Wilwood masters have NPT threads and they supply NPT threaded adapters to convert to flare fittings. At least that is my recollection. I am guessing they were suggesting teflon tape for the NPT connections.

Don


I know them very well..... they use a crush washer for that fitting - the one that goes directly in to the MC.
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


All times are GMT -5. The time now is 09:44 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright Lateral-g.net