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| | | | Joined: Aug 2010 Posts: 32 Apprentice | | Apprentice Joined: Aug 2010 Posts: 32 | what is recommended to use for the hard vac lines. I removed what appears to be original lines that have been attached to 3/8" copper tubing about 2/3 down the frame. | | | | | Joined: Mar 2010 Posts: 79 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2010 Posts: 79 | I have just completed a rebuild of my two speed from the engine to the rear. If you have oil in the lines from the inboard side it is probably from the seal located in the "pancake" assembly as was mine. Also if you have oil on both sides of the diaphragm your diaphragm is shot. In my line rebuild I used air brake line and new fittings all the way. I removed the old lines and took them to my local "big truck" shop and they duplicated them using new fittings as well. While not traditional it will guarantee no problems in the future. This stuff will not corrode or collapse.The original copper lines had rubbed against the frame and were paper thin in places. If you want to stay traditional go to your local hardware store and buy new tubing for your repair. The air brake line was actually cheaper than copper tubing,it is about $2.00 per foot for 3/8 diameter. Good luck and hope this helps.
JMH | | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | I use SAE J844 Type B air brake hose. It costs about 50& a foot in 3/8". I do not recommend copper either. It drove us crazy 50 years ago by constantly rubbing holes. Nylon hose is a permanent fix. | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
What type of metal should (or should not) the ends be made of? I plan on changing all of mine.
| | | | | Joined: Jan 2008 Posts: 4,961 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,961 | I use these type of fittings: http://www.imperialsupplies.com/grp198.shtml Make sure you use the insert. OEM has used push type fittings for the past 10 years or so because they are easy to assemble. However they can be difficult to disassemble and I'm not sure how good they would be for vacuum. http://www.imperialsupplies.com/grp299.shtml
Last edited by crenwelge; 09/05/2010 6:40 AM.
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