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11-13-2023, 02:49 PM
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#1 |
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Senior Member
 Join Date: Mar 2003
Location: Colfax-California
Posts: 8,649
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Suburban rwal
So I upgraded axles and brakes on my 91 Suburban to a full float 14 bolt rear and a Dana 60 front. The front axle got a conversion to 3/4 ton rotors. Still have the 1/2 calipers on it. Have a 3/4 ton master (not installed yet). Issue is a spongy pedal and I'm leaning towards the RWAL dump valve not working quite right. NO bleeder on the valve. I previously had issues on my other Suburban with the same issue. I am considering removing/bypassing the dump valve. Yes everything is adjusted correctly and have bled the system thoroughly. Any thoughts?
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11-13-2023, 03:52 PM
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#2 |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,228
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Re: Suburban rwal
Deleted.
K
__________________
Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ Last edited by Keith Seymore; 11-13-2023 at 06:37 PM. |
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11-13-2023, 05:29 PM
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#3 |
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Registered User
Join Date: May 2005
Location: Mobile, Al
Posts: 92
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Re: Suburban rwal
My '91 Blazer had RWAL, I removed it when I swapped in 1 tons.
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John '91 Blazer, full top, bbc, 4spd, Doubler, 1 tons, 40's |
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11-13-2023, 08:39 PM
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#4 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,649
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Re: Suburban rwal
Was the difference noticeable?
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11-17-2023, 07:55 PM
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#5 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,649
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Re: Suburban rwal
Made quite a difference in braking. Have a real brake pedal now. Couple of pics
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11-17-2023, 07:59 PM
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#6 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,649
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Re: Suburban rwal
Left over parts
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11-22-2023, 11:19 AM
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#7 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,649
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Re: Suburban rwal
May have to re-do a little bit. I think the stock combination valve is a weak link with the elimination of the dump valve. Pedal is way better, but not quite there
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