Recon!
Maniac
I'll come to you, I hate this place
CK5
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89 K5 - Recon's 1 Ton Blazer
- Thread starter Recon!
- Start date
Evolrider
Registered Member
Looks awesome!! Cant wait to get mine done. I do have a question though!! is the D60 sitting further forward, or is it an optical illusion?
A few more Beers might fix that illusion though...
A few more Beers might fix that illusion though...
Recon!
Maniac
It is 1.5" forward on the zero rate
Recon!
Maniac
Stupid Brakes
Ok, I have the new 1 ton calipers up front and the 3/4 ton calipers out back and a new adjustable proportioning valve. The brake fluid nearly all leaked out over the course of having things ripped apart.
I have been bleeding and bleeding and bleeding and bleeding and bleeding and bleeding the brakes, but I can't come up with a firm pedal. I know how to do it, I've done it many times, including one time at The Excalibur parking lot in Las Vegas when a line blew on my 01 Expedition. Never had an issue getting them bled rather quickly.
I understand that I have 4 brand new calipers and the fact that there was a ton of air in the system, but it seems like this is taking way too much time or I am not doing something I should be.
No leaks or seepage.
So far 1 quart of brake fluid added to system.
The pads are all touching the rotors evenly and the pistons are touching the pads as they are supposed to.
The fronts shoot brake fluid like a water hose on full blast. I shot fluid past the rear tire while bleeding them.
The rears just have a very slight amount of fluid coming out. It does come out, it just isn't under much pressure at all.
I have the proportioning valve for the rears on wide open for full force.
I am trying to get this fixed by Friday evening so I can go wheeling at Hidden Falls this weekend.
Do I need one of those residual valves for the rear system?
Ok, I have the new 1 ton calipers up front and the 3/4 ton calipers out back and a new adjustable proportioning valve. The brake fluid nearly all leaked out over the course of having things ripped apart.
I have been bleeding and bleeding and bleeding and bleeding and bleeding and bleeding the brakes, but I can't come up with a firm pedal. I know how to do it, I've done it many times, including one time at The Excalibur parking lot in Las Vegas when a line blew on my 01 Expedition. Never had an issue getting them bled rather quickly.
I understand that I have 4 brand new calipers and the fact that there was a ton of air in the system, but it seems like this is taking way too much time or I am not doing something I should be.
No leaks or seepage.
So far 1 quart of brake fluid added to system.
The pads are all touching the rotors evenly and the pistons are touching the pads as they are supposed to.
The fronts shoot brake fluid like a water hose on full blast. I shot fluid past the rear tire while bleeding them.
The rears just have a very slight amount of fluid coming out. It does come out, it just isn't under much pressure at all.
I have the proportioning valve for the rears on wide open for full force.
I am trying to get this fixed by Friday evening so I can go wheeling at Hidden Falls this weekend.
Do I need one of those residual valves for the rear system?
Find a shop and have them put a power bleeder on it. Best $50 or so you can spend.
Recon!
Maniac
ugh, I don't like people touching my happy place
The master cylinder doesn't have the right size pistons to be able to accommodate the rear disc brakes. Search and I think muddybuddy came up with the right size master cylinder for the rear disc trucks.
Recon!
Maniac
But shouldn't my adjustable proportioning valve solve that problem?
I dont' think so, the piston still has to move a certain amount of fluid, and a drum brake system doesn't require as much fluid movement as a disc caliper. In addition the disc/drum m/c has a residual valve in the m/c under the tapered seat to retain a couple #'s pressure on the drums.
Lunatic
1/2 ton status
I've been thinking on this for the majority of the night in order to try to put the simple explanation into terms. Pressure and volume work together - Theres no way around it (Well, there is - But we wont go into that, doesnt apply to this).
You can have all the pressure you need - But in order to use that pressure for your intended (engineered) task, you also need the (engineered) volume. You no longer have that.
Think of a water hose. It has alot of pressure at full crank and will spray across a front yard right ? Well - If you keep your same hose (master cylinder), and add a bigger spray nozzle (calipers) you dont get the volume you need on demand. If you hold your spray nozzle wide open, sure - at first the pressure is the same. But, once the pressure reduces the stored volume......
This is also why your rear brakes only weep fluid, instead of shooting like your front.
The pro-valve is controlling the balance of pressure by controlling volume. Your MC doesnt supply the needed volume for the pro-valve to be effective.
It makes sense to me, and I know what Im trying to express - I dont think I've quite worded it right though. You know to ask/call if you have questions - I'll break it down as far as I know how to in order to help anyone learn.
And, here's the thread from muddybuddy, regarding his findings of MC choice. His initial quote, below.
Good luck ! While your wheelin (hopefully) this weekend, I'll be rolling in fiberglass and resin
Troy B
Ft Hood, TX
You can have all the pressure you need - But in order to use that pressure for your intended (engineered) task, you also need the (engineered) volume. You no longer have that.
Think of a water hose. It has alot of pressure at full crank and will spray across a front yard right ? Well - If you keep your same hose (master cylinder), and add a bigger spray nozzle (calipers) you dont get the volume you need on demand. If you hold your spray nozzle wide open, sure - at first the pressure is the same. But, once the pressure reduces the stored volume......
This is also why your rear brakes only weep fluid, instead of shooting like your front.
The pro-valve is controlling the balance of pressure by controlling volume. Your MC doesnt supply the needed volume for the pro-valve to be effective.
It makes sense to me, and I know what Im trying to express - I dont think I've quite worded it right though. You know to ask/call if you have questions - I'll break it down as far as I know how to in order to help anyone learn.
And, here's the thread from muddybuddy, regarding his findings of MC choice. His initial quote, below.
Good luck ! While your wheelin (hopefully) this weekend, I'll be rolling in fiberglass and resin
Troy B
Ft Hood, TX
Recon!
Maniac
progress? sure
new sending unit installed, it's shorter than the other one, so i may randomly run out of gas which will add to the excitement
gas tank installed, gas tank skid plate installed
all the lines except the filler neck and breather hooked up, need new ones, these are rotted like a mofo
tried to start it, hear the fuel pump, but no gas in tank, so no starty
shocks installed, the 14" Bilsteins fit motherfizucking perfect on the inside hole of the ghetto fabulous upper shock mount me and my friend made, plenty of up travel and not as angled as i had thought they would be, i think they will be perfect the way they are
front shocks (formerly the rears) installed, they have no damn rebound, so that will be a much sooner mod than previously anticipated, bbcs here i come
rear bumper installed with only 4 bolts, found the rest in my milk jug/bolts bin so i'll put those in tomorrow
still need to do the rear pinion yoke, but i want it to be day light so i can make a lot of noise
need to go get a container suitable for fuel so i can put some stupid gasoline in my tank, then hopefully it will start and not run like shizzle since it hasn't run in a long time (5 or 6 weeks)
need to bleed the damn brakes, bought that mc muddybuddy found (thanks!)
then i will fill all the fluids in the transmission, transfer case, front diff and rear diff. did i forget any?
then i will drive it and try not to crash on it's first voyage as a 1 Ton Blazer!
new sending unit installed, it's shorter than the other one, so i may randomly run out of gas which will add to the excitement
gas tank installed, gas tank skid plate installed
all the lines except the filler neck and breather hooked up, need new ones, these are rotted like a mofo
tried to start it, hear the fuel pump, but no gas in tank, so no starty
shocks installed, the 14" Bilsteins fit motherfizucking perfect on the inside hole of the ghetto fabulous upper shock mount me and my friend made, plenty of up travel and not as angled as i had thought they would be, i think they will be perfect the way they are
front shocks (formerly the rears) installed, they have no damn rebound, so that will be a much sooner mod than previously anticipated, bbcs here i come
rear bumper installed with only 4 bolts, found the rest in my milk jug/bolts bin so i'll put those in tomorrow
still need to do the rear pinion yoke, but i want it to be day light so i can make a lot of noise
need to go get a container suitable for fuel so i can put some stupid gasoline in my tank, then hopefully it will start and not run like shizzle since it hasn't run in a long time (5 or 6 weeks)
need to bleed the damn brakes, bought that mc muddybuddy found (thanks!)
then i will fill all the fluids in the transmission, transfer case, front diff and rear diff. did i forget any?
then i will drive it and try not to crash on it's first voyage as a 1 Ton Blazer!
Recon!
Maniac
these brakes are pissing me off
uh oh
it's always something!
it's always something!
Recon!
Maniac
It's the last thing to finish before I can drive it. But they just won't hold in drive and just barely in reverse. Pedal is mush. Maybe I need to switch out the new proportioning valve with a butt load of adapters with the stock one and see what I get.
Recon....have a look here: http://www.pirate4x4.com/tech/billavista/Brakes/
maybe something in there will help you out.
maybe something in there will help you out.
Recon!
Maniac
While very good information, not much help.
Recon!
Maniac
I hate bleeding brakes over and over and over and over and getting nowhere
Just thinking, but are the back brakes adjusted. I can`t remember if you put disks on the back or not, but if they are still drums, it might be hard to bleed them if they are to loose. Just a thought,
but good luck!
Recon!
Maniac
Just thinking, but are the back brakes adjusted. I can`t remember if you put disks on the back or not, but if they are still drums, it might be hard to bleed them if they are to loose. Just a thought,
They are disc brakes. I think I need to pull out the proportioning valve and put the stock distribution block in, but I feel like I am chasing my tail.
Brakes can be a pain,Sorry it`s always the little sh#t that takes the fun out of it.
