|
Can't Get Wilwoods to Lock Up
#1351744
12/15/12 05:30 PM
12/15/12 05:30 PM
|
Joined: Sep 2012
Posts: 82
Cape Coral
65 DODGE POST
OP
member
|
OP
member
Joined: Sep 2012
Posts: 82
Cape Coral
|
I have a master power brakes 8" booster and Master cylinder. Wilwood disks front and back changed out the stock rubber line adapters to braided. I have gravity bled this thing, also have bled it 3-4 other times with a friend.... Brakes still suck... I can't get them to lock up Very annoying I have 14-17" of vacuum when I'm driving and If I nail the brakes with both feet it stops pretty quick.....but can not get them to lock up... This thing should stop on a dime... What the heck 
Last edited by Jims340; 12/15/12 05:31 PM.
65 DODGE CORONET 440 INDY EZ HEADS STRANGE S60
|
|
|
Re: Can't Get Wilwoods to Lock Up
[Re: 65 DODGE POST]
#1351745
12/15/12 05:36 PM
12/15/12 05:36 PM
|
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
|
Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
|
What is the piston dia in the master cylinder?
Are you getting a full stroke in the master cylinder?
How many pistons in each caliper? What are their dia?
Do you have a proportioning valve? Which one?
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
|
|
|
Re: Can't Get Wilwoods to Lock Up
[Re: 65 DODGE POST]
#1351747
12/15/12 05:58 PM
12/15/12 05:58 PM
|
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
|
Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
|
Whoops I forgot;
What pads are you using? What are their composition?
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
|
|
|
Re: Can't Get Wilwoods to Lock Up
[Re: 65 DODGE POST]
#1351749
12/15/12 06:18 PM
12/15/12 06:18 PM
|
Joined: Jan 2003
Posts: 28,068
Irving, TX
feets
Senior Management
|
Senior Management
Joined: Jan 2003
Posts: 28,068
Irving, TX
|
Brakes are hydraulic. The master cylinder must be a match for the bores.
You can't slam random stuff together and expect it to work. It's kinda like buying a random set of pistons and expecting them to fit your engine.
Find the diameter of the bores in the calipers. You can probably look them up on Wilwoods site if you have the part numbers.
You need to know the diameter of the master cylinder too.
Once you have that information share it with us and we'll know more.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
|
|
|
Re: Can't Get Wilwoods to Lock Up
[Re: feets]
#1351754
12/16/12 02:23 PM
12/16/12 02:23 PM
|
Joined: Sep 2012
Posts: 82
Cape Coral
65 DODGE POST
OP
member
|
OP
member
Joined: Sep 2012
Posts: 82
Cape Coral
|
29969 is stamped on the master cylinder. And from what I have been reading it appears to be for a 4 wheel disk corvette.
The booster is a dual 8"
The car did have rear drums when I got it.
I changed the rears to disks, flushed the lines.....but never changed a residual valve.. ( I have been reading about this)
The car will not lock up the front or the rears, and the pads do not seem to drag... the car rolls forward easily if I throw it in neutral....and my driveway hardly has a pitch at all.
It does say that I need 18" of vacuum for this kit....My car idles at 11" in gear.....but If I drive down the road I can get 17" While I'm driving with that much vacuum.....if I try to lock em up it will not. The pedal does not seem like it is assisted that much by the booster...Maybe my booster is shot....The car did sit for 13 years before I got it.....the mechanical fuel pump was shot..
65 DODGE CORONET 440 INDY EZ HEADS STRANGE S60
|
|
|
Re: Can't Get Wilwoods to Lock Up
[Re: 65 DODGE POST]
#1351755
12/16/12 03:03 PM
12/16/12 03:03 PM
|
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
|
Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
|
stupid questain; is there a vacumn line attached to the booster?  is that hose attached to the intake or the carb base? Is the valve/connector in the booster working/not stuck closed
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
|
|
|
Re: Can't Get Wilwoods to Lock Up
[Re: 65 DODGE POST]
#1351757
12/16/12 03:56 PM
12/16/12 03:56 PM
|
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
|
Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,666
On The Boat, On The Lake, Wa. ...
|
Quote:
Quote:
stupid questain;
is there a vacumn line attached to the booster?
is that hose attached to the intake or the carb base?
Is the valve/connector in the booster working/not stuck closed
I have tried with it connected to the intake, also have tried with it connected to the 3/8 barb off the back of the carb....
No difference, I get 13" of vacuum in park and 11" idling in gear....but driving down the road the vacuum is up plenty for the booster.
What is the valve connector in the booster sucked close? I gotta look into this
'stuck closed'
The connector/fitting on the booster where the hose is attached usually has a valve in there. To keep the vaumn in the booster instead of it bleeding off right away when the manifold vacumn drops off during acceleration. Ya know, just in case you have to stab the brakes on a panic stop when somebody pulls out in front of you.
If it's rusted stuck closed the 'power' won't work as the vacumn can't get to the booster. Or it lessens the vacumn boost. Take it off, look inside, and rattle it. Some people will blow and suck on the valve to see if it opens and closes easy.
Also check for a leak around that seal.
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
|
|
|
Re: Can't Get Wilwoods to Lock Up
[Re: DoctorDiff]
#1351759
12/16/12 04:29 PM
12/16/12 04:29 PM
|
Joined: Sep 2012
Posts: 82
Cape Coral
65 DODGE POST
OP
member
|
OP
member
Joined: Sep 2012
Posts: 82
Cape Coral
|
Well the check valve is good....works great and I even sucked on the booster and it holds vacuum...
Hey Cass, You are probably right.....My old man has a set of wilwoods...He said he switched pads and it made a day and night difference... Said they ate up his front rotors in a year though.
I guess a 1" bore would put a little more pressure on these things...I have an adjustable proportioning valve sitting here to throw in anyway...might as well do it all at once
65 DODGE CORONET 440 INDY EZ HEADS STRANGE S60
|
|
|
Re: Can't Get Wilwoods to Lock Up
[Re: 65 DODGE POST]
#1351763
12/17/12 04:45 PM
12/17/12 04:45 PM
|
Joined: Jan 2003
Posts: 28,068
Irving, TX
feets
Senior Management
|
Senior Management
Joined: Jan 2003
Posts: 28,068
Irving, TX
|
I'd swap to a smaller master cylinder.
Get the major parts correct before you swap brake pads. The pads you have now might be fine after you get pressure to them.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
|
|
|
|
|
.JPG){kind=link}
.JPG){kind=link}