Line lock question

Dana Fitzpatrick · 05-10-2015, 04:35 PM

I found a drop of fluid on the bottom of my line lock,right on the stud/nut at the center of the solenoid. It's clear and odorless,are they filled with a lubricant? Thanks.

Eman · 05-10-2015, 06:11 PM

They are filled with brake fluid if they are on a car. Is this a Hurst or a copy? You can buy a rebuild kit and replace the o-rings. You can also just replace the o-rings if you have a source for EPDM O-rings. Only use EPDM O-rings, don't ask how I know! I found what I needed in small packs on ebay so I can rebuild mine if needed.

tommy d · 05-10-2015, 07:32 PM

Speaking of line-locks. Has anyone ever had a spongy pedal because of a line lock problem? Every single piece of the hydraulic system has been replaced except for the roll control and I still have a spongy pedal. It wil come around on the second stab and work great. I even installed a front disc conversion and went with a G.M. Corvette style master cylinder and still soft. Arrrgh!

Dragsinger · 05-10-2015, 08:56 PM

Tommy,

what about the mounting position? Might it be mounted at a high point and be trapping air?

tommy d · 05-10-2015, 11:20 PM

Quote:

Originally Posted by Dragsinger

Tommy,

what about the mounting position? Might it be mounted at a high point and be trapping air?

Its lower than the master cylinder but not by much. I am going to by-pass it tomorrow and see what I have.Thanks for the suggestion.

tommy d · 05-11-2015, 03:24 PM

Well I by-passed the line lock and the problem is still there. Anyone run a residual valve on their car even if the master cylinder is higher than the calipers?

Kenney Kelley · 05-11-2015, 07:13 PM

Quote:

Originally Posted by Tommy d

Speaking of line-locks. Has anyone ever had a spongy pedal because of a line lock problem? Every single piece of the hydraulic system has been replaced except for the roll control and I still have a spongy pedal. It wil come around on the second stab and work great. I even installed a front disc conversion and went with a G.M. Corvette style master cylinder and still soft. Arrrgh!

Tommy we had similar problem on a car we bought it had Strange brakes on the front and rear. On each caliper it has either 2 or 4 bleeders you need to bleed all of them. Also it had a Hurst line lock..We installed the rebuild kit and that fixed that problem.

Kenney Kelley

Mark Ugrich · 05-11-2015, 08:22 PM

Quote:

Originally Posted by tommy d

Speaking of line-locks. Has anyone ever had a spongy pedal because of a line lock problem? Every single piece of the hydraulic system has been replaced except for the roll control and I still have a spongy pedal. It wil come around on the second stab and work great. I even installed a front disc conversion and went with a G.M. Corvette style master cylinder and still soft. Arrrgh!

Is the pedal ratio correct for the conversion/disc brakes?

Eman · 05-11-2015, 10:28 PM

Buy a couple of plugs that will fit the MC. Plug off 1 section and see what it feels like. If it's still spongy plug off the other and try it, spongy with both plugged you've got air in the MC. If plugging 1 section makes the pedal firm you have air in the section or a hose ballooning.

tommy d · 05-12-2015, 12:06 AM

Thanks for the ideas guys. I like the idea about blocking off a chamber on the m/c and see what happens. The disc conversion company says to pick up the $30.00 Harbor Freight pressure bleeder and use it. Gonna try that tomorrow. I hear pedal ratio thrown around on other forums. Maybe I'm going to have to learn about that next. Thanks.

05-10-2015, 04:35 PM	#1
Dana Fitzpatrick Member Join Date: May 2009 Posts: 148 Likes: 4 Liked 10 Times in 6 Posts	Line lock question I found a drop of fluid on the bottom of my line lock,right on the stud/nut at the center of the solenoid. It's clear and odorless,are they filled with a lubricant? Thanks. Last edited by Dana Fitzpatrick; 05-10-2015 at 04:40 PM. Reason: spelling

05-10-2015, 06:11 PM	#2
Eman Member Join Date: May 2014 Location: E TN Posts: 473 Likes: 16 Liked 133 Times in 76 Posts	Re: Line lock question They are filled with brake fluid if they are on a car. Is this a Hurst or a copy? You can buy a rebuild kit and replace the o-rings. You can also just replace the o-rings if you have a source for EPDM O-rings. Only use EPDM O-rings, don't ask how I know! I found what I needed in small packs on ebay so I can rebuild mine if needed.

05-10-2015, 07:32 PM	#3
tommy d Senior Member Join Date: Oct 2010 Location: Indiana Posts: 830 Likes: 1,613 Liked 359 Times in 135 Posts	Re: Line lock question Speaking of line-locks. Has anyone ever had a spongy pedal because of a line lock problem? Every single piece of the hydraulic system has been replaced except for the roll control and I still have a spongy pedal. It wil come around on the second stab and work great. I even installed a front disc conversion and went with a G.M. Corvette style master cylinder and still soft. Arrrgh! __________________ Who owns this car, with the peace sign,mag wheels, and four on the floor?

05-10-2015, 08:56 PM	#4
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	Re: Line lock question Tommy, what about the mounting position? Might it be mounted at a high point and be trapping air? __________________ Larry Woodfin 471W

05-11-2015, 03:24 PM	#6
tommy d Senior Member Join Date: Oct 2010 Location: Indiana Posts: 830 Likes: 1,613 Liked 359 Times in 135 Posts	Re: Line lock question Well I by-passed the line lock and the problem is still there. Anyone run a residual valve on their car even if the master cylinder is higher than the calipers? __________________ Who owns this car, with the peace sign,mag wheels, and four on the floor?

05-11-2015, 10:28 PM	#9
Eman Member Join Date: May 2014 Location: E TN Posts: 473 Likes: 16 Liked 133 Times in 76 Posts	Re: Line lock question Buy a couple of plugs that will fit the MC. Plug off 1 section and see what it feels like. If it's still spongy plug off the other and try it, spongy with both plugged you've got air in the MC. If plugging 1 section makes the pedal firm you have air in the section or a hose ballooning.

05-12-2015, 12:06 AM	#10
tommy d Senior Member Join Date: Oct 2010 Location: Indiana Posts: 830 Likes: 1,613 Liked 359 Times in 135 Posts	Re: Line lock question Thanks for the ideas guys. I like the idea about blocking off a chamber on the m/c and see what happens. The disc conversion company says to pick up the $30.00 Harbor Freight pressure bleeder and use it. Gonna try that tomorrow. I hear pedal ratio thrown around on other forums. Maybe I'm going to have to learn about that next. Thanks. __________________ Who owns this car, with the peace sign,mag wheels, and four on the floor?