Brake bleeding issues. - Page 59 - Ford Muscle Forums : Ford Muscle Cars Tech Forum

Mroldfart2U · 01-29-2013, 03:04 PM

Quote:

Originally Posted by KULTULZ

THANX!

I breeze in and out here and I miss much I suppose. But damn if I want to go back through it all looking for something specific...

LOL I know the feeling, same reason I didnt dig for it..... Your Welcome btw...

danv · 01-29-2013, 04:01 PM

OK I'm back after a sleep....

The Galaxie caliper did not flex.

As for the video, whether the piston cocked sideways or did any other strange things, the fact is the caliper flexed!

K, I asked you a question around this time yesterday.

ShotRod64 · 01-29-2013, 04:22 PM

Glad that's cleared up on flex or no flex! Must of came from china or something, mixture of some soft metals for sure.

RAGGAREN · 01-29-2013, 05:11 PM

Quote:

Originally Posted by danv

How the hell is it going to grab the rotor and slow it down with flex like that?

yeah alot of brake energy is being lost with that amount of flex...

i assume mine are doing the same...
and that would explain...all tho i have a desent pedal ,its not as firm and stopping power is less than expected....

about 10 years ago i installed very simular setup, bracket and s10 calipers on my 57 chevy..better pedal feel/firmer ...and it has fantastic stopping power....

the good news for me ,
i can trade mine in for about...$35...

wish it was just as simple for you Dan...

RAGGAREN · 01-29-2013, 05:24 PM

Quote:

Originally Posted by FEandGoingBroke

Considering that BOTH masters made the calipers flex?

Isn't the stopping force the main thing to concentrate on here, WHILE you wait for stronger calipers to show up?

i would say thats what Dan is doing by replacing calipers....think just about everything that can be done,,,has been done....
whats really left to check, untill new caliper has been put on and tested...
just saying....

KULTULZ · 01-29-2013, 09:00 PM

Now you begin to wonder that possibly at some point, these off-shores will go to a re-builder and they don't check to see if they are the real thing. They then get released again.

danv · 01-29-2013, 10:35 PM

Lars and any of the other guys who have this kit, I would seriously be thinking of doing the checks I did for caliper flex.
It's up to you guys, but I'm getting rid of this stuff.

And I'm going to alter my thread about the disc brake conversion in the Tech Exchange section. As far as I'm concerned, Toms doesn't get the thumbs up anymore.

FEandGoingBroke · 01-29-2013, 10:45 PM

I hope you get your pedal. I'll post my Brake stopping power theory between the two masters later this month. I gotta call NASA for more photos. (I mean get my crayons out....

)

KULTULZ · 01-30-2013, 04:27 AM

Quote:

Originally Posted by FEandGoingBroke

I hope you get your pedal.

I'll post my Brake stopping power theory between the two masters later this month.

I gotta call NASA for more photos. (I mean get my crayons out....

)

If you haven't noticed, later in the month is here.

danv · 01-31-2013, 04:13 AM

Just a little update on the Galaxie calipers as a comparison to the GM calipers.

I set up the steel bars exactly as I did with the test as shown in the video.
Pressing the pedal, it is immediately noticeable that the pedal is harder and travels less before it gets a lot harder.
Looking at the video, it is probably around this point where I tried to push the pedal REALLY hard, and the Galaxie caliper began to flex a little, at a guess around a quarter of the amount than what I had with the GM caliper. I could push no more.
The funny thing is that with the GM caliper, if I would have had more pedal stroke after it bottomed out, I reckon I could have kept going a little further, resulting in more flex.

So it looks like that calipers under load with 1000psi pushing through them could in actual fact flex a little, but I'm convinced that these GM calipers are flexing too much.
Also, my quick "use the 40 year old stretched rubber seal" rebuild seemed to have worked on the Galaxie calipers. After the steel plate test, I checked them out and there appeared to be no seepage around the piston area. And I would think with all that pressure against the steel plates, the seal would have blown before the flexing began.

PSIG · 01-31-2013, 07:25 AM

Quote:

Originally Posted by danv

... And I'm going to alter my thread about the disc brake conversion in the Tech Exchange section. As far as I'm concerned, Toms doesn't get the thumbs up anymore.

Perhaps you should have a chat with Tom first. In fairness, he may have no clue there is any weirdness with his parts. If using original-quality parts solves the issue, then I would imagine he would gladly foot the bill to send you replacements to correct and solve the issue to avoid threads and articles advising everyone to avoid his kits. Also, I would wait until you have actually solved your issue with awesome brakes as proof, before pulling the trigger on him.

David

danv · 01-31-2013, 06:21 PM

I've decided I have had enough of this kit after 6 months of trying to get it right with a so called bolt on kit.
I've decided to fit Galaxie stub axle assemblies to the car, something which I know should work. So therefore I don't want replacements.

If you check the Disc Brake Conversion thread, I have suggested people check their calipers because I found a lot of flex with mine.

RAGGAREN · 02-17-2013, 03:27 PM

it been awhile ..so i decided to update....
and i got my brakes squard away a week or so ago... soo heres what transpired

my calipers where the same 499 casting as Danv's
but they did not seem to have as much flexing as dan's, hard to tell since i was not able to do exact steel plate testing ...
i stacked an extra set of pads in mine and pads may have absorbed some pressure.....
i replaced calipers with a pair of 1979 k10's since they use same metric m10 banjo bolt,so that way i did not have to replace hyd hose too..
basiclly identical , but had to grind off a casting hump in order for it to fit in bracket..as you can see in these pictures...

also where banjo fitting connects its a little diffrent,
i cut a couple notches so i could position/clock hose better than before....

i noticed a great improvement...
so with that said....
my rears was now the next problem in chain of events...so i decided, i did not want to invest more time and money into the old drum and shoe setup....
so i orderd rear disc also...
there was an issue with one of the calipers ...but tom's sent me a new one immiditlly...

after i installed the rear disc's....
with the GM mc 1"bore i had to pump pedal to get desent pedal height...
whent for a test drive...
brakes work good if i pumped them....
then if i slightly engaged parking brake..
then brakes worked good without pumping pedal but slightlly low....
then i decided to switch back the ford master....
now that mc would bottom out...
with parking brake slightlly engaged ,pedal was better...when pushing heavy, i could still bottom out, but would pump up...
whent for another test drive , brakes was terrible..
had to do a quick double pump for brakes to work, but rears didn't do much...
switched back to GM mc, added a 10lbs pressure residual valve to rear...
got good feel and pedal height....
whent for another test drive good stopping power
without parking brake engaged or pumping....
but now the rears had a slight delay in releasing. so i would feel a slight drag for a second or two
due to residual valve....
whent over to O'realies picked up a 1969 427 corvett 4 wheel disc powerbrake master cylinder 1 1/8 bore....

removed front and rear residual valves, installed new mc bleed mc and all four corners.....
good solid pedal with short throw and brakes works great.....yeeeaay

heres a picture of new mc, it also have bleeder screws integrated at each port...

i also will have to clean up and repaint my inner fender...since the constant messing with brake fluid...

another thing the new e-brake cables was way to short...
i ended up using old e-brake cables but casing/sleve was still a little short,
so i used and modifyed a pair of sparkplug foulers to use as extentions to sleves...

colkerr · 02-17-2013, 10:14 PM

So i guess you'd run a SBC in a Ford?

Sent from AutoGuide.com App

RAGGAREN · 02-17-2013, 10:27 PM

Quote:

Originally Posted by colkerr

So i guess you'd run a SBC in a Ford?

Sent from AutoGuide.com App

when it makes sense...why not..

im not chebbyfobic....

and if you look behind brake booster...theres a toyota hydralic clutch mc...
does that mean i have a honda vtec in a ford????