Underbody reinforcement

I took it apart a few weeks ago, and it only protects the speedometer joint. The pipes are in the groove of the chassis.

For my first attempt I will use 3mm steel. Maybe later with a couple of nerves to increase strength.

You will find this part on eBay I believe? I think it just bolts off and back on with 22 bolts?

Unleashed wrote: You will find this part on eBay I believe? I think it just bolts off and back on with 22 bolts?

Do you mean the original part as fitted to our cars or the modified flatter version that the OP is looking for ?

I'm looking to make on steel a flat version. 
I don't know there's an aftermarket part! 

I think the original or after market part? They are readily available I think. I jump st looked on MGFnTF bits for example they have them, if it's the metal that bolts on underneath the cockpit. However having read the post again if it's a flatter version your after, sorry no idea.

The fact that there are so many bolts used to secure the plate tells be it must do something to stiffen the car, otherwise they'd just use a few clips of self tappers.
Even the ribs and folds pressed into the part will when in combination with all those bolts will add to the torsional rigidity of the car, they may even contribute to a reduction in NVH (Noise, Vibration & Harshness)

Cobber wrote: The fact that there are so many bolts used to secure the plate tells be it must do something to stiffen the car, otherwise they'd just use a few clips of self tappers.
Even the ribs and folds pressed into the part will when in combination with all those bolts will add to the torsional rigidity of the car, they may even contribute to a reduction in NVH (Noise, Vibration & Harshness)

Fully agree with the above.  It also occurs to me that if your F is grounding on your garage/drive floor, either the ground-clearance is desperately small, or your drive/garage floor or wherever it is grounding must be VERY uneven.

I used to have problems with grounding at a slope reversal where my drive meets the edge of the "main" road outside our house.  Since selling the Kit car and buying the standard, (NOT "Sportspack" 1 or 2) TF135, I have never had any grounding problems, despite the appallingly bad state of Devon roads.  Are you confident that the Satur suspension was installed and set-up correctly?

The distance is the same as with the original Hydragas, even the hardness is regulated according to Mike's parameters.

The problem is the entrance, which has a slight inclination (I would say about 5-7°) but when it reaches the plane, it is not progressive AT ALL, it goes from the inclined plane to the straight one without any transition, which is why I have a "hump" that in I will briefly lower to make an entrance with a regular slope.

As I said in my first response and backed up by others this steel pressing is to help stiffen the bodyshell. MG Rover found that the MGF needed stiffening even more and the TF included extra braces under the spare wheel well, the dashboard braces and the above engine braces. MG Rover would not have added extra stiffening if it was not needed, however if you just potter around then as I said it may not make a noticeable  difference.
Until I get another "run around" car we are using the TF to take garden rubbish to the tip and despite it being smaller than my old Fabia estate I can get almost as many bags in the boot! It never bottoms out on the speed bumps that our other car scrapes the under body on, the TF never touches them. It must be a problem to some though because someone else asked the same question about removing the reinforcing panel on another forum a few weeks ago.

Solved!!
4 mm galvanized iron was the solution. 
I applied 3 coats of mate black to protect and now I can get into the garage without problems!!


 

You have done well fabricating this panel.  How much difference does it make to the ground clearance in centimeters?

I’m quite taken with that idea, I’m shortly going to fit lowering suspension knuckles * & like you I’ve a hump to overcome as I reverse into the garage.
I could go under the car & measure the gain by fitting a plate but we’re off for a week away.
*the fitting of the suspension knuckles has been threatened for the past few years. They’ll need another coat of paint by the time I’m ready.
M