1972 MGB/GT Rescue

Thursday, August 15, 2019

Picked this up Spring of 2019 as a project. It wasn't getting much love on the market, probably due to the 'serious rust' issues. We all know that rust is the deal breaker, right?
Well, I went to take a look since it was local. Yep. It had some big ol rust holes in both sides and the back.

But, I knew something about it -- it was a California car for most of its life before being moved here to NC. California cars rust the doglegs because they get full of road dirt and it traps moisture.
The rest of the car showed no other signs of rust underneath, although the rear hatch did have a couple rust holes at the bottom edge. Probably a leaking window seal. The car ran (poorly) and drove and was straight, complete, and fairly unmolested. So I made a deal and brought it home. 

 


 

 

 

 

 

 

 

 

 

 

 

 

 

I thought I could get this car on the road fairly quickly. So, just now getting around to working on it, starting with that dogleg rust.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

As I suspected, the rust was very limited. It hadn't been driven where they salted roads.

 


 

Friday, August 16, 2019

Dogleg rust repairs

 Cleaned away the rust from the rocker with a wire wheel, and it revealed some rust through. So this would be cut out and patched. 


 Inner panel is still good. 
 
 
 
While the rocker was opened up, I took the opportunity to inspect the inside of it. Found some sediment and debris in there.
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
It all cleaned out with a vacuum. No rust in here either.

 


So, to protect it from future rust, I decided to spray the inside with this Eastwood internal frame coating product.

 

It uses a long applicator tube with a multi-pattern spray nozzle at the tip. You can feed this in through the rocker drain holes, and at the opening cut in the back of course.
The spray has a very thin viscosity so that it will seep into the seams. Which means it also runs out though the drain holes, so the floor needs to be well covered.

 



 
Well coated! Maybe it will last for another 47 years?

 



 
Rocker patched and sprayed with more of the rust preventative. It takes nearly one can per side of the car.

 
 

Friday, August 16, 2019

Dogleg repairs - 2

 Dogleg repair panel trimed down and welded in. I haven't done one of these before, so I was a bit surprised when I cut the edges off of the Moss repair panel it lost much of the shape. It turns out the pressing process leaves a lot of residual stress, and when you cut the folded edges off it wants to return to its original flat form. So there's a lot of panel beating needed to get it to fit. You can see by the remaining primer spots that my re-bending was not perfect. 

 


Sunday, August 25, 2019

Old hidden hood damage


I spent the morning hammering out dents in the nose of the hood (bonnet). When I got it the paint on the hood was cracking and falling off. Or I should say the bondo that is. I thought I should strip the paint from it and get some primer on it to protect it from rust. That's when I discovered that there was about 1/4" of bondo underneath across the whole front going back about a foot. They had reshaped the whole front profile with a thick layer of bondo rather than smoothing out the fairly minor dents. So I made a couple of thin dollies or 'spoons' that would slip in between the inner and outer panels to reach the backside of the dents. After an hour or so of hammering I got it smooth enough that it will now finish up with only a very thin skim of filler or high-build primer.

Now I see other places where the paint is cracked, and I know that there is bondo lurking underneath...

Surprisingly, the hood finisher strip was present and undamaged. 

 
 

Sunday, August 25, 2019

Mystery wheels

The wheels that came with the car weren't meant for an MGB. They had too little offset, causing them to stick out too far.

I had one wheel off and found the manufacturer and specs. It was made by American Eagle Wheels, and the size is 14x6. Appears to have been fitted to Datsun 240Z and the like, back in the day.

Backspacing measures out to 3.675", outside is 3.3", so this makes the offset about 5mm. Less than the recommended offset for a 6" rim, this leaves about 1/4" clearance at the rear fender on the right side, and just about zero on the left side. Maybe this explains why the previous owner was running low and skinny 165/65 tires.

To keep the tire from hitting the wheel arches, a previous owner seemed to have dealt with the problem by jacking up the rear end with huge long spring shackles.

 

Sunday, August 25, 2019

Passenger side dogleg

Repair work to the right-hand side dogleg was virtually the same as the left-hand side.

 

 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Inside rocker looked much the same as the other side. Just needed to be vacuumed out and re-coated.  

 

 

 
 
Rusted section cut out and patched. 

 
 
 
 



 

This side has a coat of body filler up and around the fender arch. Not sure what's going on with that, but it may be related to past rear-end collision damage.

 

 

 

Friday, September 13, 2019

Hidden rear-end damage!

Moving around to the back, after a closer inspection, I found the whole rear of the car has had body "repairs".  I stripped off some of the loose paint and bondo to get a better idea of what I'm dealing with. Basically, the entire rear panel is sculpted out of bondo up to 1/4" thick or more. The car was bumped in the rear at some point. There's no point trying to strip this any further. The whole lot will need cutting out and replaced. The hatch will need to be replaced as well. 

 

 
 

 
 

 
 

Sunday, September 22, 2019

Found a good tailgate

Found a good used tailgate. It even appears to be the same year or close, based on the emblem holes location. This one should only require normal paint prep. 

 
 
 

Monday, September 30, 2019

New Heritage rear panel

New Heritage rear panel arrived. Had to order this from UK, as I couldn't find it in the US. Mossmotors US tried to convince me that the GT uses the same part as the roadster, as they don't even list the part for the GT. Fellow on the phone wanted to argue with me about it, despite showing him the different part numbers at BMH. Moss UK had the correct part, and cost including shipping from UK was about $160 less than buying the incorrect roadster version from Moss US. 

 

 

Thursday, October 10, 2019

Rear wing repair sections

Got a pair of rear wing repair sections from BMH. These aren't normally sold by themselves - they are an individual component in the complete rear-wing assembly.  Since I didn't want to replace the entire wings,  I persuaded a nice fellow at British Motor Heritage to send me out a pair of just these stampings for a very reasonable price. 

Now it's time to start cutting out some bodywork... 

 
 
 
 

Friday, October 18, 2019

The chopping begins

The Bondo was so thick everywhere that there's no way it could be removed. I couldn't find the panel welds so I just began cutting out chunks near the seams and joins. This will leave only small areas of bondo to grind out to locate the spot welds. 



 

Free standing bondo. Not even touching the metal.



Underneath. It's like archaeology

  
 

Friday, October 18, 2019

Heavy metal

The outside fender seams and welds were filled with lead at the factory in those days. They stopped this practice a few years later as it endangered workers' health.


 

I don't want to be sanding this stuff, and especially not welding around it. So I melted it out with a propane torch, wiping the bodywork with a paper towel while hot to get most of the residue off. Even still, I use a good filter mask while doing all this work and sweep up and vacuum right away so it's not lingering in the shop.

 

No comments:

Post a Comment