The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Suspension

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-21-2009, 09:36 PM   #1
lo72
Truck Junkie
 
lo72's Avatar
 
Join Date: Aug 2008
Location: Lithia Springs Ga
Posts: 354
Air Lines

Where is the best place to come out of the front crossmember with the air lines? One down each side or both down one side to the valves? Will be using 1/4 in lines to a Big Red valve set up on the frame on the drivers side any help or ideas will be great...thanks in advance
lo72 is offline   Reply With Quote
Old 09-21-2009, 10:19 PM   #2
N2TRUX
Happy to be here
 
N2TRUX's Avatar
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
Re: Air Lines

Where are you mounting the valves? Are these 1/4" or 3/8" Big Red valves?
__________________
Follow me on Facebook and Instagram @N2trux.com

Articles-

"Jake" the 84 to 74 crewcab

"Elwood" the77_Remix

85 GMC Sierra "Scarlett"

"Refining Sierra"
N2TRUX is offline   Reply With Quote
Old 09-22-2009, 05:28 AM   #3
lo72
Truck Junkie
 
lo72's Avatar
 
Join Date: Aug 2008
Location: Lithia Springs Ga
Posts: 354
Re: Air Lines

1/4 inch Big Red valves mounted on the frame most likely on the driver's side. Unless there is a better location. Tank will be mounted close to valves as will the compressor..thanks
lo72 is offline   Reply With Quote
Old 09-22-2009, 06:26 AM   #4
lolife99
67-72 parts collector,…
 
lolife99's Avatar
 
Join Date: Nov 2002
Location: Mid-MO
Posts: 22,690
Re: Air Lines

You can run both front lines down the drivers side and cross over to the right side inside the front crossmember,... to get to the passenger side bag.
I drilled a hole under my motor mount stand (from the bottom) and used a rubber grommet to protect the airline.
Use plenty of wire ties to keep the air line away from exhaust heat and from getting pinched.
__________________
Keith

Convert to disc brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=444823

Last edited by lolife99; 09-22-2009 at 06:28 AM.
lolife99 is offline   Reply With Quote
Old 09-22-2009, 09:20 AM   #5
lo72
Truck Junkie
 
lo72's Avatar
 
Join Date: Aug 2008
Location: Lithia Springs Ga
Posts: 354
Re: Air Lines

Thanks Lolife99 i'll try that
lo72 is offline   Reply With Quote
Old 09-22-2009, 09:37 AM   #6
N2TRUX
Happy to be here
 
N2TRUX's Avatar
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
Re: Air Lines

If you don't have your fitting already, I would consider running 3/8" fittings and lines. The 1/4" Big Red is a bit slow and the 3/8" line will help speed it up.
__________________
Follow me on Facebook and Instagram @N2trux.com

Articles-

"Jake" the 84 to 74 crewcab

"Elwood" the77_Remix

85 GMC Sierra "Scarlett"

"Refining Sierra"
N2TRUX is offline   Reply With Quote
Old 09-22-2009, 10:25 AM   #7
lo72
Truck Junkie
 
lo72's Avatar
 
Join Date: Aug 2008
Location: Lithia Springs Ga
Posts: 354
Re: Air Lines

Thanks N2TRUX i do have 1/4 in fittings, but i can change them i've read post on this board that 1/4 in would make the system more manageable...would 3/8s be better? Not too fast? I have a Thomas 327 compressor and i will be getting a 3 gallon tank to support the system, i'm not looking to be speedy up and down. I just want the available adjustment and recovery. Thanks for your input.
lo72 is offline   Reply With Quote
Old 09-22-2009, 10:53 AM   #8
ob1monkey
Registered User
 
Join Date: Dec 2008
Location: sanford,fl
Posts: 185
Re: Air Lines

I just went from a manual 1/4inch valve setup with 3/8 line to a full 3/8 electric valve and line setup. I also went from 3 gal to 10 gal tank. The increase in valve size/lose of line due to swithing from manual to electric and they are way to fast. tank at 100 psi and the front bags jump 7-8 psi every tap of the switch. before it seemed really slow, I now see slower is better than to fast. I am purchasing some speed reducers for the dump sides that way I can air it up past the ride height and lower it to the correct pressure without fussing to much with the switches. maybe this info will help with your line and fitting sizing.
ob1monkey is offline   Reply With Quote
Old 09-22-2009, 10:54 AM   #9
C10Sim
Registered User
 
C10Sim's Avatar
 
Join Date: Oct 2008
Location: Houston, Tx
Posts: 469
Re: Air Lines

Dont mean to hi jack this thread, but I have 1/2 inch xtreme valves (I think) or I know for sure that what I bought was for 1/2 setup (lines,fittings, and so). My question is that im really not trying to hop the truck but want to have good control of ride height but dont want something slow either. What do you guys reccommend? Lines? Valves?
__________________
1968 Chevy Pickup
http://67-72chevytrucks.com/vboard/s...d.php?t=321717

1959 Chevy Apache 3100 SWB Big Window
http://67-72chevytrucks.com/vboard/s...d.php?t=597069
C10Sim is offline   Reply With Quote
Old 09-22-2009, 11:00 AM   #10
N2TRUX
Happy to be here
 
N2TRUX's Avatar
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
Re: Air Lines

Having had both 1/4" and 3/8" I would say the 3/8" is the better of the two. Yes it is fast, but not crazy fast. I think you would be happier trying to slow down a slightly fast sysptem than you would with a known slow system.

You can always insert a piece of 1/4" line inside the 3/8" line to reduce the speed.
__________________
Follow me on Facebook and Instagram @N2trux.com

Articles-

"Jake" the 84 to 74 crewcab

"Elwood" the77_Remix

85 GMC Sierra "Scarlett"

"Refining Sierra"
N2TRUX is offline   Reply With Quote
Old 09-22-2009, 11:02 AM   #11
N2TRUX
Happy to be here
 
N2TRUX's Avatar
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
Re: Air Lines

Quote:
Originally Posted by C10Sim View Post
Dont mean to hi jack this thread, but I have 1/2 inch xtreme valves .... im really not trying to hop the truck but want to have good control of ride height but dont want something slow either. What do you guys reccommend?
Since you already have the 1/2" system I would go with it. You can add restrictors to slow it down of needed.
__________________
Follow me on Facebook and Instagram @N2trux.com

Articles-

"Jake" the 84 to 74 crewcab

"Elwood" the77_Remix

85 GMC Sierra "Scarlett"

"Refining Sierra"
N2TRUX is offline   Reply With Quote
Old 09-22-2009, 11:09 AM   #12
ob1monkey
Registered User
 
Join Date: Dec 2008
Location: sanford,fl
Posts: 185
Re: Air Lines

I agree. with the old setup I couldn't get any faster without upgrading. with the new one I can alway slow it down.

C10slim add some speed reducers to your system on the intake and dump side during install and that way if it's to fast you can just tune it to your speed. From now on with my installs they are going in just incase.
ob1monkey is offline   Reply With Quote
Old 09-22-2009, 11:25 AM   #13
lo72
Truck Junkie
 
lo72's Avatar
 
Join Date: Aug 2008
Location: Lithia Springs Ga
Posts: 354
Re: Air Lines

Thanks N2 and for everyone else's input. Speed reducers? What are they and where do i find them?
lo72 is offline   Reply With Quote
Old 09-22-2009, 12:28 PM   #14
ob1monkey
Registered User
 
Join Date: Dec 2008
Location: sanford,fl
Posts: 185
Re: Air Lines

you can get them at most air suspension websites. suicidedoors,avs,airbagit all carry them. This inline lift side are installed between the valve and bag and you adjust it with a thumb screw. I am acctualy going to get compressor drain valves from lowes for my dump side they work the same way and cost 5 to 6 bucks each. for you the big red valves I belive you will only need one for the lift. just put it between the valve block and tank.
ob1monkey is offline   Reply With Quote
Old 09-22-2009, 01:49 PM   #15
Primer70
Superbad
 
Primer70's Avatar
 
Join Date: Mar 2007
Location: Pittsburg, CA
Posts: 153
Re: Air Lines

I prefer the up fast, down slower. It's easier to slow your set up down with bigger valves & lines than it is to speed it up with smaller valves & lines if it's to slow, you can buy speed reducers for dumps & lift valves. I'm gonna be running HE8s with dual 3/4" lines & four 3/4" Parker valves for the lift & two 1/2" Parker valves with speed reducers for dumps up front, gonna make one set of the 3/4" valves switchable so I don't run all four all the time. Out back will be RE8s & all 1/2" lines & valves with speed reducers for dumps.
Primer70 is offline   Reply With Quote
Old 09-22-2009, 02:23 PM   #16
lo72
Truck Junkie
 
lo72's Avatar
 
Join Date: Aug 2008
Location: Lithia Springs Ga
Posts: 354
Re: Air Lines

Thanks again all. Where do you guys run your airlines where do you enter the front crossmember. i need to drill 2 holes and i only want to do it once. Inside the frame rails, directly under the rails or on the outside of the frame valves are assembled together so i'll be running all the lines to one point
lo72 is offline   Reply With Quote
Old 09-22-2009, 03:33 PM   #17
Primer70
Superbad
 
Primer70's Avatar
 
Join Date: Mar 2007
Location: Pittsburg, CA
Posts: 153
Re: Air Lines

I'm not sure where mine will be routed outta the bags, yet since I'm runnin dual 3/4" lines. I'll probably run'em out the back of the engine crossmember using rigid stainless tubing & bend with a tubing bender towards the rear on the inside of the frame cause they will be close to the exhaust. I'm gonna try to mount the valves inside the crossmember.
Primer70 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:08 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com