8.8 axle vent (5/16") confused... - FFCars.com : Factory Five Racing Discussion Forum
 
LinkBack Thread Tools Display Modes
post #1 of 10 (permalink) Old 10-06-2011, 02:36 AM Thread Starter
Junior Charter Member
 
Lou N's Avatar
 
Join Date: Oct 2005
Location: Parker, CO
Posts: 458
8.8 axle vent (5/16") confused...

All,

My 8.8 rear axle has a 5/16" fine thread for the axle vent, does that indicate that the rearend came from a certain year Mustang or possibly a truck? I can't seem to find a Ford part for that size, everything I find is 1/8".

The rearend came with an orange plug so I'm assuming it wasn't drilled and re-tapped. Any idea if I can just run a 5/16" fitting with a hose for a vent?

Thanks,
Lou


MK III, Non Donor, Crate 302, 15\" American Racing Wheels, Disk/Drum, still deciding on the rest...
Lou N is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 10-06-2011, 02:45 AM
Senior Member
 
streetbeast's Avatar
 
Join Date: Nov 2009
Location: Henderson Nv
Posts: 156
Your right it 1/8"pipe.That what it should be.Just use a vent from any 8.8 axle.

streetbeast is offline  
post #3 of 10 (permalink) Old 10-06-2011, 02:59 AM
Junior Charter Member
FFCars Master Craftsman
 
ROADRACER83's Avatar
 
Join Date: Feb 2006
Location: EDMONDS, WA (SEATTLE)
Posts: 2,074
Thread terminology

Pipe is always measured by inside diameter and tube is measured by outside diameter.

1/8th inch pipe threads are 1/8th inch inside and about 5/16ths outside due to the thickness of the pipe walls. For instance a 1/2 inch pipe thread tap is about 3/4 inch in diameter due to the approximately 1/8 inch thick pipe walls.

On my 8.8 rear end I found that the 3rd link banana bracket covered the vent hole so I welded it up and drilled a hole toward the top of the back cover and put a right angle -6 AN bulkhead fitting and a 2 foot piece of hose in as a vent. I anchored the end of the hose to the frame with a loop between the diff housing and the frame to allow the rear end to move up and down. I put a 3/8 plastic fuel filter on the end to allow the vent to breath but not suck in any debris. If the 3rd link bracket doesn't hit the vent you don't need to go to those lengths.

Ron

Racing: "The world's most efficient way to turn money into noise and smoke"
"Think with your dipstick, Jimmy"
"Anybody can BUY a car, only a chosen few build their own"
FFR Challenge car #4182SP Carbed 302, Holley 600CFM, E303 cam, T5, 3 link rear-3:55, Levy wheels, Kumho tires, Fire Safe fuel cell, Griffin race radiator, ISIS wiring system, MSD 6ALN NASCAR ignition, 85 Mustang distributor,

Last edited by ROADRACER83; 10-06-2011 at 03:07 AM.
ROADRACER83 is offline  
post #4 of 10 (permalink) Old 10-06-2011, 04:00 AM Thread Starter
Junior Charter Member
 
Lou N's Avatar
 
Join Date: Oct 2005
Location: Parker, CO
Posts: 458
Guys,

Thanks. I guess it is NPT, not fine thread. I found this after searching around:

Ford Rear End Breather

I think I'll look for a fitting and just run a hose as Roadracer83 suggested.

MK III, Non Donor, Crate 302, 15\" American Racing Wheels, Disk/Drum, still deciding on the rest...
Lou N is offline  
post #5 of 10 (permalink) Old 10-06-2011, 05:01 AM
Junior Charter Member
FFCars Master Craftsman
 
ROADRACER83's Avatar
 
Join Date: Feb 2006
Location: EDMONDS, WA (SEATTLE)
Posts: 2,074
Cool little vent

Jeg's has got a neat little vent with a filter in it. A 1/8 pipe fitting with a nipple on it would work also. Just use some 1/4 or 5/16 hose. NAPA has those hose fittings.

JEGS Rear Axle Vent - JEGS

This is what you are looking for but you can get them in brass for a lot less.

Holley Performance Hose Barb to Pipe Thread Adapters Products

ron

Racing: "The world's most efficient way to turn money into noise and smoke"
"Think with your dipstick, Jimmy"
"Anybody can BUY a car, only a chosen few build their own"
FFR Challenge car #4182SP Carbed 302, Holley 600CFM, E303 cam, T5, 3 link rear-3:55, Levy wheels, Kumho tires, Fire Safe fuel cell, Griffin race radiator, ISIS wiring system, MSD 6ALN NASCAR ignition, 85 Mustang distributor,
ROADRACER83 is offline  
post #6 of 10 (permalink) Old 10-06-2011, 05:45 AM
Senior Member
FFCars Craftsman
 
Join Date: Jan 2008
Posts: 1,111
Ford part number should be 4R3Z-4022-AA.
oxide is offline  
post #7 of 10 (permalink) Old 10-06-2011, 02:46 PM
Senior Member
FFCars Craftsman
 
1fastsedan's Avatar
 
Join Date: Jul 2010
Location: San Diego, CA
Posts: 561
XXXXX - recommended part did not fit

Last edited by 1fastsedan; 10-19-2011 at 08:27 PM.
1fastsedan is offline  
post #8 of 10 (permalink) Old 10-06-2011, 08:40 PM
Senior Member
 
Join Date: Oct 2004
Location: Whitman, MA
Posts: 223
8.8 vent

The vent on the mustang 8.8 rear end from 1987-2004 is a special thread and come from Ford only

custom brake kits and custom powder coating
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Discbrakesrus is offline  
post #9 of 10 (permalink) Old 10-07-2011, 03:16 AM
Senior Member
 
Join Date: Jan 2002
Location: 7 Crestview Avenue, Medway, MA 02053
Posts: 1,897
How to make your life easier:

Check Breeze Automotive Factory Five Racing first

Breeze Automotive Factory Five Racing


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
2005 FFR Mk3 Roadster, 302/340hp, MassFlo EFI, Breeze Pulleys, T5, Aluminum Flywheel, 3-link rear with Torsen Diff and 3.27:1 gears, Power Steering, Breeze Front Sway Bar, SN-95 Spindles with outboard SAI Mod, Breeze Battery Mount, QA1 Externally Adjustable Shocks, Quick Release Steering Wheel, Vintage Race seats, GM Arctic White, Sky Blue Scoop, Hidden Hinges, Billet Aluminum Side-view Mirrors, 2,183lbs wet. 1967 Mustang Fastback, Dark Moss Green, black interior, '67 14" styled steel wheels, 2000 Explorer 302 w 5.0 Cam, Quickfuel 450 CFM, 289 Hi-Po Dual exhaust, C4, lowering springs w Shelby drop.
Mark Reynolds is offline  
post #10 of 10 (permalink) Old 10-07-2011, 03:08 PM Thread Starter
Junior Charter Member
 
Lou N's Avatar
 
Join Date: Oct 2005
Location: Parker, CO
Posts: 458
Thanks guys. I'm going to stop by Ace Hardware today and try the 1/8 NPT fitting. I have a leftover filter from a bike project that will work on the end of a hose to keep the dirt out.

Lou


MK III, Non Donor, Crate 302, 15\" American Racing Wheels, Disk/Drum, still deciding on the rest...
Lou N is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the FFCars.com : Factory Five Racing Discussion Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome

 

Welcome to FFCars! The representations expressed are the representations and opinions of the FFCars.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Factory Five Racing, Inc. or Ford Motor Company. This website has been planned and developed by FFCars.com and its forum members and should not be construed as being endorsed by Factory Five Racing, Inc. or Ford Motor Company for any purpose. "FFR", "Factory Five", "Factory Five Racing", and the Factory Five Racing logo are registered trademarks of Factory Five Racing, Inc. FFCars.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting the FFCars.com Forum dedicated to Factory Five.