Wrong flex line?

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kittypancake

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Replacing 9" drums with KH 4 piston discs. The flex line i have doesn't fit through the tab welded to the sub frame. The tab and original flex line have a flat spot on one side, I presume it's to keep the line from spinning. The disc brake flex line does not have the flat spot and won't fit through tab.
My question is... do i grind the tab hole round, or do i look for flex lines that have a corresponding flat spot?
 
What car, are working on...? Let's start, with the parts, you want to swap.....
 
Abodybomber said:
What car, are working on...? Let's start, with the parts, you want to swap.....
Click to expand...
72 Valiant, I've changed the spindles, have the hubs and discs on, when i went to install the calipers i ran into this problem
 
I find it difficult to believe that welded tab would be different for the different brake assemblies the chassis might receive later down the line. I never saw hoses on any vehicle that didn't have some type of positioning fix. My best guess is you have the wrong lines in hand.
I would first find out what is correct for K-H lines, then decide do I create flats on these hoses? whittle the tab opening to round? buy correct hoses?
 
I would shop for the correct hoses-that flat spot on the ferrule is an index which keeps the brake hose from twisting in the frame tab.If it were to twist, it's either going to break the line from fatigue or loosen off the line to hose connection.Some auto parts stores like to say "yeh we got the part" but it's not the RIGHT part. There are so many foreign car part companies making pieces to fill low volume sales that they take short cuts in manufacturing. On some applications, that notch also keeps the hose angled and positioned properly-like Aspen/volare hoses that have a steel tube on them. You never want the hose to have a spiral twist in them when the wheel is pointed straight ahead.
 
I highly recommend those steel-braided hoses. The brake-feel is so much better, and mine were installed in 99, so they have an excellent lifespan. Mine seemed to be slightly longer too, which helps when the front end falls to the bottom of the shock extension,like when the front end gets airborne,lol.

I'm kindof remembering tho, that the index was not there on mine either. No biggie I thought, the retaining groove still was, so I kindof remember modding the frame tab. In any case, I never looked at 'em again. That's going on 130,000 miles now.
 
kittypancake said:
Replacing 9" drums with KH 4 piston discs. The flex line i have doesn't fit through the tab welded to the sub frame. The tab and original flex line have a flat spot on one side, I presume it's to keep the line from spinning. The disc brake flex line does not have the flat spot and won't fit through tab.
My question is... do i grind the tab hole round, or do i look for flex lines that have a corresponding flat spot?
Click to expand...

If the hose is the right length and works other than the one issue I'd file the hole to fit. Shouldnt need to remove much material.
Unless your worried about "originality".
I had to file a couple notches in the tabs on my 72 Demon.
Much simpler than trying to return the hoses I had and hunting for the "correct" ones.
"correct" doesnt likely exist as I was putting single piston calipers on a 72 A body.
 
kittypancake said:
72 Valiant, I've changed the spindles, have the hubs and discs on, when i went to install the calipers i ran into this problem
Click to expand...


hemi71x said:
Wagner BH66718
NAPA BH36654
Car Quest BHA66718 CHW
Dorman H66718
Raybestos BH36654
Click to expand...

Follow hemi71x's (Jim's) advice, he does many of these and knows his ****....
 
hemi71x said:
Wagner BH66718
NAPA BH36654
Car Quest BHA66718 CHW
Dorman H66718
Raybestos BH36654
Click to expand...
Ordered a pair of Raybestos. Should arrive at my house Wednesday. Seems like the sensible thing to do, being a whopping $20 investment and all...
 
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