Pics attached of the clutch cable tube / conduit that 'let go' in my 73 2.0.
Note that I have already pulled the tube back into it's proper position. Before that, the end of the tube had pulled through the firewall (aprox. 1") and only the very end of it was visible.
For reference, the first pic is of a 914 center tunnel as seen from underneath:
First up, rear firewall. The torn firewall metal pulled in about 1/2".
When the tube broke free in the tunnel, the only thing that stopped the tube from going completely through the firewall was the shoulder on the clutch cable.
Next up, the front mount as viewed from the shifter hole.
Next, the front mount tear. I could only get a shot of the top side of the mount. It's torn underneath as well.
Note that I 'almost' drilled through the accelerator conduit / tube. Take care when cutting / drilling.
Shown with ruler for reference.
Lastly, the middle bracket tear. Man, that is one lame / flimsy bracket!
Again, shown with ruler for reference:
I thinking that there could be a preventive bracket made to prevent that. A steel or ? plate with a tube that can be cold welded into place?
Pic of firewall after wire brushing. Note how the metal crack in the firewall spread to the fuel line opening and how rust holes opened up in the firewall.
Front mount after welding. Top side shown.
1. Thanks for the great pictures!
2. Cutting holes in the center tunnel is not necessary, but will work. Some carefully placed holes with a drill will let you reweld things quickly.
3. The tube is brazed into place from the factory. You can't weld over the brass, so research the washer-trick for repairing the firewall.
4. The 'flimsy' center braket is not meant/designed to take any stress. The front and rear mounts are supposed to keep things in place. But once they let go, the little middle one doesn't stand a chance.
5. You can post more than one picture per post now.
Access for front mount, bottom bracket for reference. This is prior to welding, as the welded picture didn't turn out.
After welding and grinding, and welding and grinding and welding and grinding.... and priming and painting with rattle cans, this is how it turned out. I was pretty happy with it, especially since this is my first time using a MIG welder. I installed new SS fuel lines (thanks, Chris!) new fuel line grommets and a new clutch cable.
One thing I noticed is that the front tube mount, even after being welded on the top and bottom, still moves / flexes a little (about a .5 mm). There is probably a bunch of stress created by the cable moving inside / against the tube. No wonder they break inside the tunnel.
I found out that 3/8" flexible copper tubing fits almost perfectly into the clutch cable tube on either end. I cut off a piece of the 3/8" copper tubing about 4" long and inserted in each end to keep from burning through with the MIG wire. I'm really glad I did, as there were scorch marks on the copper tubing after I welded the firewall end of the tube.
good to see on the last picture you got the steel fuel lines in! i don't know how there are any plastic line teeners still around unburnt
Good call on the copper tubing!
well - when i push my clutch peddle - my shifter moves.
i also - always wondered why someone previously cut into my tunnel.
it all makes sense now : )
i need to reweld front clutch tube bracket.
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some people fix everything with a BFH
me - i use a drill : )
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