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#1 |
Registered User
Join Date: Sep 2006
Location: arizona
Posts: 31
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Plumbing Airbag Suspension question
Can anybody help me decide which way I should plumb the air lines to my airbags. I have been told to run each bag independently with its own valve and guage. I like the idea of teeing the front bags together as well as the rear bags. I want the front to air up off of one switch as well as the rear. I am not into the side to side thing. So, what are the pros and cons of running the bags independently?
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#2 |
3DrDwn--the 'burb not the band
Join Date: Jan 2007
Location: missoula, mt
Posts: 598
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Re: Plumbing Airbag Suspension question
see this thread:
http://67-72chevytrucks.com/vboard/s...66#post2410966 "tee"ing the bags on a common F-B set-up rides very poorly even with upgraded sway bar as air transfer from side to side induces a TON of body roll. I used to prefer an 8 valve FBSS set-up with two vehicle mounted switches for FB action and then a 10-switch box wired to a 7-way trailer connector so I can plug it in and do FBSS for shows or criusing. Right now I'm converting one of my old 6 valve set-ups that was indy front and "tee'd" rear to the 6 valve set-up that Kontrol Freaks outlines in the referenced post and using the same set-up in a new build. On paper it seems like the perfect solution and if it works well on these two the it is how I'll set-up my '72 burb. Josh
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Slo and Lo that is the tempo. '72 burb build page here: http://67-72chevytrucks.com/vboard/s...d.php?t=259256 '89 GMC Dually crew build page coming soon. 88 ![]() duallys past/present pics here: http://67-72chevytrucks.com/vboard/s...46#post4001246 89 1 ton Dually rear flip kit install here: http://67-72chevytrucks.com/vboard/s...d.php?t=354327 |
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#3 |
Registered User
Join Date: Feb 2006
Location: Central Cali
Posts: 242
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Re: Plumbing Airbag Suspension question
Yeah .. Werd ..
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#4 |
Senior Member
Join Date: May 2004
Location: johnstown, NY
Posts: 2,393
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Re: Plumbing Airbag Suspension question
oh man, I missed that 6 valve setup. Nice idea. I may try that. So with that setup, you cant dump each corner independently, correct? Not something that I foresee wanting anyway so this may be perfect.
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#5 | |
3DrDwn--the 'burb not the band
Join Date: Jan 2007
Location: missoula, mt
Posts: 598
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Re: Plumbing Airbag Suspension question
Quote:
Josh
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Slo and Lo that is the tempo. '72 burb build page here: http://67-72chevytrucks.com/vboard/s...d.php?t=259256 '89 GMC Dually crew build page coming soon. 88 ![]() duallys past/present pics here: http://67-72chevytrucks.com/vboard/s...46#post4001246 89 1 ton Dually rear flip kit install here: http://67-72chevytrucks.com/vboard/s...d.php?t=354327 |
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#6 |
Senior Member
Join Date: May 2004
Location: johnstown, NY
Posts: 2,393
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Re: Plumbing Airbag Suspension question
hmmm, I think I may try the 6 valve setup.
I've got 3/8" valves, no airline yet. If I run 8 valves, do you think it will dump hard? |
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#7 |
3DrDwn--the 'burb not the band
Join Date: Jan 2007
Location: missoula, mt
Posts: 598
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Re: Plumbing Airbag Suspension question
i've used a few different methods to slow the dump speed. Those sintered bronze screens reduce airflow a bit and one of my friends has ball valves on his dumps to slow them down.
So far though the cleanest result yet is the 4L2D 6 valve. if you have the time you can always try a few set-ups and see which you prefer. Josh
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Slo and Lo that is the tempo. '72 burb build page here: http://67-72chevytrucks.com/vboard/s...d.php?t=259256 '89 GMC Dually crew build page coming soon. 88 ![]() duallys past/present pics here: http://67-72chevytrucks.com/vboard/s...46#post4001246 89 1 ton Dually rear flip kit install here: http://67-72chevytrucks.com/vboard/s...d.php?t=354327 |
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#8 |
Regular guy
Join Date: Oct 2003
Location: Round Rock TX
Posts: 518
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Re: Plumbing Airbag Suspension question
I know folks will probably think I'm full of poop, but I have done many 4 valve set ups and only a few needed to be switched to 8 valve independent. (to me a fairly simple addition)
In fact two trucks of mine have been on the road for over10 years and only have 4 valves. The only change on these trucks was a switch from Firestone to Slam Specialty bags. They ride and handle quit well and I have no planes to ever change to a 8 valve system on those trucks. But don't get me wrong....I'm not saying an 8 valve system is not desirable, it's just not necessary in all cases.
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'Frank' 77 Silverado 18 & 20 American CL205s Edelbrock MPFI, 700r4, Baer Brakes 9" F@rd rear, Vintage air, Bags etc etc.. Last edited by 7T7; 11-23-2007 at 08:55 PM. |
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#9 |
Happy to be here
![]() Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Re: Plumbing Airbag Suspension question
Frank you have found the magic formula. I don't know if it's the Slam bags or what, but 73-87 trucks are terrible about air transfer if you don't isolate the front corners. The rear isn't as bad, but the front sucks even with a sway bar.
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Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" |
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#10 | |
3DrDwn--the 'burb not the band
Join Date: Jan 2007
Location: missoula, mt
Posts: 598
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Re: Plumbing Airbag Suspension question
Quote:
Josh. ps here's the test mule I know it's not 67-72 or even a chevy but I was a poor kid once and mini's were all I could afford to be into:
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Slo and Lo that is the tempo. '72 burb build page here: http://67-72chevytrucks.com/vboard/s...d.php?t=259256 '89 GMC Dually crew build page coming soon. 88 ![]() duallys past/present pics here: http://67-72chevytrucks.com/vboard/s...46#post4001246 89 1 ton Dually rear flip kit install here: http://67-72chevytrucks.com/vboard/s...d.php?t=354327 |
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#11 |
Commander Taco Bello
Join Date: Sep 2006
Location: Des Moines, Iowa
Posts: 2,232
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Re: Plumbing Airbag Suspension question
with my 8 valve, 3/8" valve with 3/8" line, i don't think it dumps to fast. i'm using the SS RE7 bags with a single 3/8" opening. it's definately quick, but not so much that i worry about damage or noise.
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