Brake line ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70GMCer · 09-07-2005, 01:14 PM

Well, I found the source of my brake failure. Turns out I have a hole in the front right brake line just before it screws into the backing plate. My question is what is the difference between manual drum front brake lines and front power disk lines? I would like to replace this line with the correct bent line, but don't want to change it again, when I switch to disk brakes. Are the lines the same? Now, I'm talking about the steel lines, not the flex lines. If they are different, then maybe I'll try to make one up for now. Another question, are these lines that are sold pre-bent, are they easy to install?

steve

Americanrider · 09-07-2005, 01:28 PM

I've never seen a soild line that went into the front backing plate. I thought they where all flex lines to allow for the wheel to turn? Disk brakes lines have different fittings where they attach to the caliper.

mplex2000 · 09-07-2005, 01:33 PM

I have no idea on the difference between the fittings on drum and disc as I haven't received my disc lines yet, but while we're on the subject..

Does anybody know what size the bleeders are? I need to order some speed bleeders.

70GMCer · 09-07-2005, 03:21 PM

I ment to say the hard line that connects to the hose.....

**raggedjim** · 09-07-2005, 04:00 PM

The 71-72 hardlines for disc are in front of the crossmember, the drum hardlines are behind it. I think the hardlines have different connections... This link says the 79 chevette flexible hose will work with the drum hardline and disc brakes... Good luck, Rg

http://67-72chevytrucks.com/vboard/s...light=chevette

4tiresngas · 09-07-2005, 04:06 PM

The guys at Inline Tube are pretty helpful. They walked me through exactly what I needed when I went to front disc brakes on my 69. You might cal them. Their number is on their website www.inlinetube.com.

**guyryan100** · 09-07-2005, 08:33 PM

I purchased a full hard line system from Inline Tube and was very pleased. I am not confident in my ability to bend and flare brake lines. I'd give them a call and they will know what you need.

*FormerMember* · 09-07-2005, 08:45 PM

So, where can I get a diagram of how to install a complete front and rear brake circuit?

09-07-2005, 01:14 PM	#1
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Brake line ? Well, I found the source of my brake failure. Turns out I have a hole in the front right brake line just before it screws into the backing plate. My question is what is the difference between manual drum front brake lines and front power disk lines? I would like to replace this line with the correct bent line, but don't want to change it again, when I switch to disk brakes. Are the lines the same? Now, I'm talking about the steel lines, not the flex lines. If they are different, then maybe I'll try to make one up for now. Another question, are these lines that are sold pre-bent, are they easy to install? steve __________________ 1997 GMC Sierra Ext 1965 Mustang

09-07-2005, 03:21 PM	#4
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	I ment to say the hard line that connects to the hose..... __________________ 1997 GMC Sierra Ext 1965 Mustang

09-07-2005, 04:00 PM	#5
raggedjim Senior Member Join Date: Jun 2002 Location: Murray, Kentucky Posts: 3,476	The 71-72 hardlines for disc are in front of the crossmember, the drum hardlines are behind it. I think the hardlines have different connections... This link says the 79 chevette flexible hose will work with the drum hardline and disc brakes... Good luck, Rg http://67-72chevytrucks.com/vboard/s...light=chevette __________________ Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd '73 Firebird - https://67-72chevytrucks.com/vboard/...d.php?t=853203

09-07-2005, 04:06 PM	#6
4tiresngas An American Soldier Join Date: Feb 2005 Location: Grumolo D' Abadessee, Italy Posts: 503	The guys at Inline Tube are pretty helpful. They walked me through exactly what I needed when I went to front disc brakes on my 69. You might cal them. Their number is on their website www.inlinetube.com. __________________ Dan dan.brue@us.army.mil

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09-07-2005, 01:28 PM	#2
Americanrider Registered User Join Date: Dec 2004 Location: NW, WA. Posts: 1,421	I've never seen a soild line that went into the front backing plate. I thought they where all flex lines to allow for the wheel to turn? Disk brakes lines have different fittings where they attach to the caliper.

09-07-2005, 01:33 PM	#3
mplex2000 Registered User Join Date: Jul 2005 Location: DFW Posts: 463	I have no idea on the difference between the fittings on drum and disc as I haven't received my disc lines yet, but while we're on the subject.. Does anybody know what size the bleeders are? I need to order some speed bleeders.

09-07-2005, 08:33 PM	#7
guyryan100 Registered User Join Date: Sep 2001 Location: Cumming, GA Posts: 483	I purchased a full hard line system from Inline Tube and was very pleased. I am not confident in my ability to bend and flare brake lines. I'd give them a call and they will know what you need.

09-07-2005, 08:45 PM	#8
FormerMember Account Suspended Join Date: Feb 2004 Posts: 3,051	So, where can I get a diagram of how to install a complete front and rear brake circuit?



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