Re: panhard bar for tr4-where to locate & mount
Here's a picture of the Huffaker MGB during the restoration.
As you can see we're not quite done. You'll see the black mount for the panhard bar on the driver side and the hook up on this end for the bar under the spring mount, we have mounted the bar yet. It runs as Jerry mentioned , below the axle tube for a lower roll center. Here's a second picture this is of the Huffker watts link that is on the Huffaker Bugeye I drove, nice but way too elobrate and took a good bit of sub structure to mount it. Then there's the wishbone I discussed earlier, we have one of those on a customer's vintage Midget, same rear pick up point, the drain plug in the rear end housing, the wishbone is a simple set up that requires less sub structure to mount it. If you running a panhard bar on a Midget or MGB, at the center the car the panhard bar should pass by the drain plug of the rear housing at about the level of the drain plug, this is the roll center you should be looking for.
As for a rear sway bar, to each their own. On my racing Spridgets they are so stiff, that if I tried to run without a rear sway bar, I just lifted the inside fornt tire in a corner to the point the weight tranfered too much to the outside wheel and induced a push, making me slower in the middle of the corner, installed the rear sway bar, the inside fornt tire stayed planted, not nearly as much weight tranfer, no push, went a bunch faster. I like rear sway bars, but different cars do behave differently, but I never drove a race car that didn't go faster with me in it with a rear sway vs without one.