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Originally Posted by A6PILOT
The throttle cable is stiff and I know it's heat related.
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Steve, I've experimented a bit, and the most effective heat shield is a reflector backed with an insulator. Almost as good is a reflector alone, while an insulator alone is a distant third. Fabricate what you need to keep that cable cool.
Here's a pair of standard Vans cables running just above a 4-into-1. The shield is formed aluminum. The insulator is fiberfrax wrapped around the cables and covered with metal duct tape, which is also a reflector. About 90 hours now, no issues. Time will tell.
You can also fabricate conventional reflector shields for pipe sections. This one reduces radiant heating to the throttle body and divider line.
Have fun with your new -8.