'93 F-350. Powdered vacuum lines under the hood.

[Paul B.]

What I thought would be a not so slow build is crawling along very slowly. But, got some 35" Cooper Discoverer AT3's on there this week. Had to immediately remove the stock bumper, as had been suggested herein. But, another question about mechanicals, which is my one of my many weak spots.



I am in the engine compartment, seeing vacuum lines that have turned to powder. (Truck runs strong, heat and a/c blow hot and cold.) What do these vacuum lines do exactly? Should I worry about replacing them sooner rather than later?

 

[pappawheely]

Ha, Ha, I had the powdered lines too. I found a schematic somewhere online and replaced the lines on my truck. I will try to find that link.

*Found it here: http://www.ford-trucks.com/forums/1326413-1992-460-vac-line-schematic.html#post14523395

 

[Paul B.]

Perfect. Exactly what I needed. Thanks, Mike.

 

[Forbye]

The factory lines all fail eventually. What I and many others at FSB have done with great success is replace every one of them with thick walled silicone. Silicone Intake Systems has the reccomended hoses. Look at these two links paying attention to Seattle FSB's and Booba 5185's posts.

http://www.fullsizebronco.com/forum.../206476-silicone-vacuum-line-replacement.html

http://www.fullsizebronco.com/forum...2382-replace-plastic-vacuum-hoses-rubber.html

 

[redthies]

But, got some 35" Cooper Discoverer AT3's on there this week. Had to immediately remove the stock bumper, as had been suggested herein.

I just cut off the "horns" on the bottom outer edge of the bumper on my OBS Fords and it clear 35" MTs. Do you have any lift at all?