We weren't happy with the way a few things were panning out and decided to spend the time modifying them so we would feel better about the build.
The first was the drive shaft. There were two things bugging us. First, the yoke ( the end that goes in the transmission) had a lot of play and second because we moved the engine forward a few inches to get better clearance at the firewall, the yoke was exposed more than usual.
So we went ahead and used the yoke from the Lincoln drive shaft, which we knew would have a lot less play and would marry to the seal better (yellow ring in the picture) and we sent the drive shaft after some measuring to a drive shaft fabricator to lengthen and rebalance it. Now it feels right - no play and looks normal (about an inch of visible yoke) at the transmission. I have also included a photo of the difference in length of the old Lincoln drive shaft (minus a yoke) and the new one.
The second mod we did concerned heat transfer from the exhaust system into the passenger compartment. After installing the mufflers and thinking about the very thin sheet-metal floor we were about to install, it was becoming obvious that we would have a heat problem and possibly melting carpet. We do plan to put some heat and sound material on the floor under the carpet, but it still concerned us. So we did two more things to help mitigate the heat transfer. One is we fabricated some heat shields that will cover the mufflers and deflect the radiant heat away from the floor. We also lined the underside floor panel with the same heat shield fabric we used on the firewall. It's rated to 2000 degrees Fahrenheit. Mufflers run about 300-500 degrees so we should be better with these modifications.
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| The heat shields |
the underside of the floor panel with the heat fabric
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| with the heat shield mounted, it's cut to fit around the frame x bracing |
Now the floor is installed
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