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PostPosted: Mon Nov 07, 2016 5:31 am 
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Year and Trim: 1998 pontiac bonneville se
Does anybody know if I have 4 brake lines or 3 with the back brakes combining into 1


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PostPosted: Mon Nov 07, 2016 8:49 am 
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Location: Central Illinois
Year and Trim: 1992 SSE
2009 G8 GT
It should be 4 channel abs. So, 4 lines. It might be two that run from the master cylinder to the abs unit, then 4 from there to the brakes.

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PostPosted: Mon Nov 07, 2016 9:42 am 
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Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
hi, from the abs controller there will be 1 line going to each wheel - if you get it off the ground, you can trace the lines to the respective wheel.

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past rides:
1996 SSEi
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1987 Grand Am


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PostPosted: Tue Nov 22, 2016 2:29 am 
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Year and Trim: 1998 pontiac bonneville se
A couple of questions :
1. When I flare the brake line should I use
a double flare or bubble flare?

2. Depending on a double or bubble flare
what size fittings do I need to buy?


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PostPosted: Tue Nov 22, 2016 9:50 am 
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Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
you will need a flare - and union to match flare
the bubble wont fit flare fitting and lines

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poverty forces one to do unorthodox things

2000 SSEi
past rides:
1996 SSEi
1992 GTP
1987 Grand Am


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PostPosted: Tue Nov 22, 2016 1:46 pm 
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Location: Dearborn, MI
Year and Trim: '93 SSEi
'05 STS-4
'97 Camaro
'97 LeSabre
There are two sizes of brake line used on these cars, 3/16" and 6mm (can use 1/4" to replace).

These are from the '97 that I did a few years ago.
Front Brake hardware
Brake line to brake hose: M10x1.0 (3/16 line) BLF-39C-5
Brake line to ABS: M12x1.0 (3/16" line) BLF-48C-5
Master cylinder to ABS: M12x1.0 (1/4" line, all 4 same) NAPA 641-3329

Rear Brake hardware
Brake line to ABS: M10x1.0 (3/16" line)
Brake line to Proportioning valve: M12x1.0 (inlet) M10x1.0 (outlet) (3/16" line)
Brake line to brake hose: M10x1.0 (3/16 line)

You need to bubble flare anything that's going into the factory connections, all brake line connections from the factory are metric and bubble flare.
If you have to add a splice, it doesn't matter if you bubble flare or double flare, as long as it matches the union you use. The fittings will work with either flare style.

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Runs:
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'97 Chevy Camaro - 3800, T5, T-tops, my DD
'05 Cadillac STS - V8, AWD, her DD
'89 Buick LeSabre Limited - winter DD
'84 GMC Sierra Classic - Twin turbo 3800
'97 Buick LeSabre - L67 project
'92 Pontiac Bonneville SSE future project

Doesn't run:
'87 Buick LeSabre T-type - future victim
'67 Buick LeSabre - future victim


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PostPosted: Tue Nov 22, 2016 2:30 pm 
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Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
[quote=

You need to bubble flare anything that's going into the factory connections, all brake line connections from the factory are metric and bubble flare.
[/quote]


i find this strange.both my ssei(96,2000) and 92 gtp had flare to fittings.

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poverty forces one to do unorthodox things

2000 SSEi
past rides:
1996 SSEi
1992 GTP
1987 Grand Am


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PostPosted: Tue Nov 22, 2016 7:32 pm 
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Joined: Tue Aug 25, 2009 8:32 pm
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Location: Dearborn, MI
Year and Trim: '93 SSEi
'05 STS-4
'97 Camaro
'97 LeSabre
Yep. Basically everything FWD GM with a unibody uses all metric hardware. I'm sure there are limited exceptions to that rule, but everything on the '92-'99 H-body is definitely metric with bubble flares from the factory.

Now, I've seen people jamb a double flare in a bubble flare socket...But you risk stripping the hardware getting it tight enough to seal.

_________________
I don't know how much boost it takes to blow the tires off. But I know how much I'm going to use!
Image

Runs:
'93 Pontiac Bonneville SSEi - Twincharged, manual, racecar! Build thread
'97 Chevy Camaro - 3800, T5, T-tops, my DD
'05 Cadillac STS - V8, AWD, her DD
'89 Buick LeSabre Limited - winter DD
'84 GMC Sierra Classic - Twin turbo 3800
'97 Buick LeSabre - L67 project
'92 Pontiac Bonneville SSE future project

Doesn't run:
'87 Buick LeSabre T-type - future victim
'67 Buick LeSabre - future victim


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