Mark VIII rear

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Toyz
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Mark VIII rear

Post by Toyz »

No, NOT the neon taillamps, although that may happen later :roll:
Has anyone transplanted the MK VIII IRS assembly? I know there is a kit available consisting of several plates. I also know I have better uses for 300 + dollars for something I can easily fabricate, I hope! Rolling the assembly under the frame will tell me most of what I need to know, but it certainly helps to have some info from someone who has done it, kit or otherwise. I will eventually switch out the hubs to Mustang Cobra applications so I can run 5 on 4.5 pattern all the way around.
There was a write-up on HAMB some time ago, but it didn't go into much detail on the mounting.
Thanks for any help,
Paul
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rickairmedic
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Re: Mark VIII rear

Post by rickairmedic »

Paul Unifarmer did a Cougar IRS pretty similar I would think heres a link to his build and he built his brackets .


viewtopic.php?f=32&t=28583



Rick
if it aint broke fix it till it is :D
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62galxe
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Re: Mark VIII rear

Post by 62galxe »

1963 uni PATINA BLUE
1965 short bed
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61blacklowrider
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Re: Mark VIII rear

Post by 61blacklowrider »

I've done it in my old 55 F100, the one I traded for my 61. Go to http://www.Team 321.com and go to the bottom of the main page, and look for instructions and detailed installation instructions. He gives very good instructions with vital measurements. He will not sell patterns. Copy and paste the instructions as it will help with your project. Once you have all the measurements you can roll the Mk VIII under the rear of the chassis and duplicate the location by following the measurements. Then it will be up to you to fabricate the pieces you need to install the IRS. Check out the photos in the follow up to your question. The one with the uni-body and the Dakota front end. His adapter plates are excellent and actually better than the ones that are sold by Team 321. Good Luck!
Bob

Note: The truck I'm refering to is UniFarmers
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Toyz
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Re: Mark VIII rear

Post by Toyz »

Actually, what I'm looking for is along the lines of the Factory Five or Hurricane kits, without the cost :lol: . I need to "tuck in" the tabs, from both an esthetic and a ride height standpoint. Moving the airbags inboard, or utilizing coil-overs is also intriguing. Of course, being cheap, I may settle for a simpler set-up, or, bite the bullet and fab up a cage for the Continental 32v setup back there! That way I won't have to jack with the little items like pinion angle, driveshaft lengths, etc. :twisted:
Paul
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unifarmer
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Re: Mark VIII rear

Post by unifarmer »

I looked at the team 321 kit and is to low for my taste. I to have other things to do with $300+. So I decided to give it a try and build my own plates. I looked at several builds on the bumpside site and it looked doable. I had my hubs and rotors redrilled at a machine shop, it was cheaper then $300 for cobra hubs.

My truck is not road worthy yet so it is still in the air if my setup will work.
61 uni SWB- Dakota IFS, Cougar IRS (going to be White)
03 F-350 superduty crewcab 7.3- DD (White)
01 Expedition- Wifes (White)
99 F-550 7.3- Work truck#1 (White)
96 F-350 7.3- Work truck#2 (white)
Do you see a pattern?
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Toyz
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Re: Mark VIII rear

Post by Toyz »

I don't think there will be any problem with yours working. It looks plenty robust. I'm anxious to see yours when complete!
I have two frames , one with a Fatman MII front (low), the other with a Town Car front clip (lower yet). That was where the reference to the ride height of Lance's (Foodstick) came into play. It looks as if I can do a fairly accurate mock-up on the Fatman to determine if it meets my needs. I can always add drop spindles to the front if needed, but I suspect it will have a substantial rake instead. I would prefer to use the TC frame so I can save the Fatman for a relatively all-out tube cage and arms in the manner of the Factory Five. Thanks for posting the pics and help, and please keep us posted on progress. I have too many projects to dedicate much effort to this one currently, but I need the trailer axle that's under the Fatman; it would be nice to put something in it's place!
Paul
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65styleside
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Re: Mark VIII rear

Post by 65styleside »

I put the mark viii IRS under my 65.

I made all my own mounts cause i wasnt gonna pay the 300 for ten buck worth of steel.

I cut up into the frame to match the lower ride height I got from my jag front suspension.

Just an fyi, It will lower your truck quite a bit, even if you cut into the frame as little as possible.

I am gonna pull the rear subframe out in a couple weeks, I can make some patterns for you while I got it out.

I'll see if I can get some pics up too.
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Toyz
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Re: Mark VIII rear

Post by Toyz »

I certainly appreciate it; that's exactly what I have in mind, to move the mounting points upward, and, if possible, trim the mounting ears to clean up the street view. If you are utilizing the older XJ front mounted under the frame rails, your height should just about meet my needs.
Thanks,
Paul
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65styleside
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Re: Mark VIII rear

Post by 65styleside »

I actually sectioned the Xj 1" into the frame to help alleviate the angles of the steering shaft but it should give you a good starting point.
65styleside
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Re: Mark VIII rear

Post by 65styleside »

Hey Toys, just wanted to let you know I haven't forgot about you. I have been remodelling my parents kitchen so the truck has been on the back burner. I hope to get my hands on it the beginning of next week. I'll take some pics for you too. Sorry for the delay.
65styleside
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Re: Mark VIII rear

Post by 65styleside »

So due to a couple deaths in my ol ladies family and Colorado weather I haven't been able to pull mey rear subframe to make the final brackets. So I took some pics of it mocked up under my truck. Here is one pic, check my album for a couple others.
10689
I have some basic measurements, I will draw something on the computer tomorrow and post it. Sorry for the delay, you know how life can be at times. It really is a pretty simple swap, took longer to cut the old stuff out than it did to mock up the mark viii rear.
65styleside
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Re: Mark VIII rear

Post by 65styleside »

10693
Here are the measurements i got.

It's in there now with a 6"x 11" plate, I plan on using an 8" wide plate for the final bracket.

That way it will extend to the inside of the frame rail and out past the edge of the coil spring mount.

Ill box the inside of the frame and place gussets on the outside of the frame, should be plenty strong.

Let me know if you need anything else, ill get some pics up when i do all the finish work, when ever that may be.
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Toyz
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Re: Mark VIII rear

Post by Toyz »

Thanks,
that should give me something to start with.
Paul
The Ford Orphanage
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