Steering, Suspension, & Brakes

tips, technology, tools and techniques related to non-driveline mechanical components

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Scott68B
Scott Costanzo
Columbus, Ohio
(548 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Panhard Rod and Axle Install Project
Posted by: Scott68B
Date: April 01, 2020 08:35AM

I wanted to share what I've been doing over the winter this year. So I've wanted to do some suspension mods for a long time, especially a panhard rod. I've also have an LSD rear end I've been wanting to get in my car for several years and decided to do both this year.

I'll start with the panhard rod. So I know several guys who have used the corner of the trunk floor as the mounting point for one side of the bar. I'm aware of at least 3 instances where metal fatigue caused cracking in the trunk floor and I wasnít going down that path. I wanted to put something together that would minimize any flexing and I came up with the following approach. Iím going to let the pictures tell the story with some comment in between.

Here are a couple of pictures of the mount, one out of the car and one in. I used 1 1/2 X 1 1/2 X 3/16Ē square pipe. I did have to remove the upper axle strap mounts to make this work.

Car Side.jpg

It is bolt-in and these pictures show how that will be accomplished. It isnít quite done yet but most of the tedious work is completed. I used pipe around the bolts so the ďframe railsĒ arenít deformed when I tighten things down. You can see that on either side of the trunk.

Trunk View.jpg

I still need to make a few modifications too. The first picture shows the area around the read end ďhumpĒ that allows for clearance during full compression. The mount intrudes into this space so it will need to be modified to correct that. In the second picture, the upper axle strap mount needs to be replaced. This picture gives you an idea of how that will be done. The red mark shows where the mount will be placed. It is still a work in progress.

Mods to do.jpg

Thatís pretty much what will happen on the body side of things.
For the axle, Iím using an adjustable mount from Speedway. This is the item. I had to order smaller diameter pipe to make this mount a bolt-on. Speedway has a version that is bolt-on but it is intended for a 3Ē diameter axle tube and my axle is about 2 5/8Ē. You can also see the bar mount in this picture. It is from Speedway and gives an easy way to adjust the height. It is intended for a 1 1/2" X 1 1/2" square pipe.

Axle Mount.jpg

Iíll end this for now. Iíll be back to talk about my rear end install in the next few days. As things progress, I will update this thread


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5912 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: BlownMGB-V8
Date: April 01, 2020 11:57AM

Looks pretty good Scott. Overall it seems well designed.

Jim


40indianss
don foote

(68 posts)

Registered:
08/01/2013 04:35PM

Main British Car:


Re: Panhard Rod and Axle Install Project
Posted by: 40indianss
Date: April 01, 2020 11:58AM

I used a similar approach with an adjustable bar and different trunk mount using 3/16" material to reinforce the trunk floor and frame rail. The panhard can be raised or lowered by moving up or down in the tube
DSC00612.JPG
DSC00648.JPG
DSC00652.JPG
DSC00646.JPG


MGBV8
Carl Floyd
Kingsport, TN
(3896 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

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Re: Panhard Rod and Axle Install Project
Posted by: MGBV8
Date: April 02, 2020 10:04AM

I need to go inspect mine. I don't think there has been any strength issues in the trunk floor area. Mine has the leaf springs helping the panhard rod. So, not near the forces that Scot & Mike moor will see.

I used a sliding dirt track piece on the driver side. Wound up with the bar all the way to the bottom limit.

Panhard Rod Driver Side.jpg



Edited 1 time(s). Last edit at 04/02/2020 10:07AM by MGBV8.


40indianss
don foote

(68 posts)

Registered:
08/01/2013 04:35PM

Main British Car:


Re: Panhard Rod and Axle Install Project
Posted by: 40indianss
Date: April 02, 2020 11:06PM

The differences between mine and Carl's are his is adjustable at any place on the sleeve and it is under the car whereas mine has four adjustment holes accessed from above the trunk floor. Otherwise same idea


MGBV8
Carl Floyd
Kingsport, TN
(3896 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: MGBV8
Date: April 04, 2020 10:10AM

Cool idea, Don.

I adjusted mine to be centered & level with the rear axle from underneath Les Shockey's open trailer while he was sitting in the driver seat.

Should have painted mine, but I was about to leave for a British V8 Meet. Was under the car welding at 4am & leaving later that day after a few hours sleep. ;)


Scott68B
Scott Costanzo
Columbus, Ohio
(548 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: Scott68B
Date: May 07, 2020 12:29PM

Still in the middle of things but wanted everyone to know I haven't forgotten about this thread. Here's a preliminary photo. I've made more progress after this photo but will have to wait to update the thread until a later date.

Panhard Rod in Place.jpg



BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5912 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: BlownMGB-V8
Date: May 07, 2020 02:08PM

Seems like a good design.

Jim


Scott68B
Scott Costanzo
Columbus, Ohio
(548 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: Scott68B
Date: May 21, 2020 04:45PM

Hi everyone, so I'm finally getting close, one maybe two work sessions away from the road with some luck. Here is a little more information on what I'm doing.

This first picture shows some of the Panhard rod. The top pic shows the axle side of the mount all bolted in and ready to go. The bottom shows the view from the rear. I have all the correct bolts in now. :) I still need to clean out the axle, install new seals, button everything up and add lubricant.

Parhard Bar Mounting.jpg

This one shows the trunk mounts all welded up. Still need to paint it.

Trunk Mounts.jpg

Now on to the brakes. I'm using 1997 Honda Accord rotors and 2009 Honda Civic rear calipers. This is based on all the work Charlie Durning did on his rear brake design. I want to thank him for all his information and advice. The top picture shows the assembled unit bolted to my GM axle. The bottom picture shows the bracket. It was made from a piece of 6" X 6"X 5/16" plate. On the drivers side, it lines up really well with the rotor. Strangely enough, I needed two washers between the caliper bracket and the fabricated bracket to line things up. All the final fitting is done on both sides but I still need to trim them up a bit...still a little rough looking in the picture.

brakes 1.jpg

This next picture shows the fabricated bracket bolted up to the axle and the last one shows the final fit of the brake pad to the rotor.

brakes 2.jpg

A few things are left to do, mainly plumbing the new calipers into the brake hydraulics, installing a new real seal in the transmission and installing my new driveshaft. I also have to install and wire my new Ford VSS and the new speedo cable. Anxious to see how it drives. I'll add more later.

Edit: plumbing calipers, not rotors.



Edited 1 time(s). Last edit at 05/21/2020 09:23PM by Scott68B.


Spitfire 350
Phil McConnell
Perrysburg, OH (Toledo area)
(194 posts)

Registered:
01/11/2010 09:19PM

Main British Car:
74 Spitfire 350Chevy

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: Spitfire 350
Date: May 21, 2020 09:25PM

Scott,
Nice work on all of this. True craftsmanship!!!


MGBV8
Carl Floyd
Kingsport, TN
(3896 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: MGBV8
Date: May 27, 2020 03:16PM

Some specs on your new rearend would be good, Scott.


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(1103 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: ex-tyke
Date: May 28, 2020 08:34AM

Quote:
Some specs on your new rearend would be good, Scott.
Yep, and why you didn't opt for GM disc brakes for that axle.


Scott68B
Scott Costanzo
Columbus, Ohio
(548 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Re: Panhard Rod and Axle Install Project
Posted by: Scott68B
Date: May 29, 2020 02:37PM

Quote:
Quote:
Some specs on your new rearend would be good, Scott.
Yep, and why you didn't opt for GM disc brakes for that axle.

Hi everyone - I guess I should have done that. Here are the specs:

GM 7.5Ē F-Body 3.23 LSD
Bolt on length
Disk Brakes (96 Honda Accord Rear)
Calipers (09 Honda Civic Rear)
Calipers will be front mounted
Parking brake cable will be MG/Honda hybrid

Graham - Simple answer, they are heavy, won't fit behind 14" wheels, I would probably have had to go with a brake proportioning valve and/or a new master cylinder and I would have had to get them redrilled to 4 X 4.5. It was a no brainer. To be honest, if I could have adapted my B drum brakes to this axle easily I would have done that. Having said that, it was a fun, relatively easy project. I have a real chance to get it back on the road tomorrow. I'm anxious to try it out.

Scott


tr6turbo
Dale Knapke
Sidney, Ohio
(169 posts)

Registered:
08/24/2008 09:44PM

Main British Car:
1972 Triumph TR6 Ford 2300, 4 Cyl Turbo

Re: Panhard Rod and Axle Install Project
Posted by: tr6turbo
Date: May 31, 2020 02:43PM

Really looks good


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