 Does precise lengths of vacuum hoses matter? |
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| s13u74cr4 |
 Mar 28 2026, 01:47 PM
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#1
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Newbie  Group: Members Posts: 49 Joined: 2-September 23 From: PNW Member No.: 27,558 Region Association: Pacific Northwest  |
In the process of wrapping up replacing all the vacuum lines on my 73 2.0. I went by a combination of the 73 and 74 diagrams on Bowlsby’s site. But looking at this one some of the lengths seem long compared to what was in the car and fit without having a bunch left over. The three 36” lengths make no sense to me.
(IMG:https://bowlsby.net/914/Classic/zTN_FI_Hose_Vac_2.0L_1973-Early1974.jpg) |
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| mepstein |
Mar 28 2026, 01:51 PM
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#2
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914-6 GT in waiting Group: Members Posts: 20,578 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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Length doesn’t matter. At least in this case….
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| fixer34 |
Mar 28 2026, 02:15 PM
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#3
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Senior Member Group: Members Posts: 1,404 Joined: 16-September 14 From: Chicago area Member No.: 17,908 Region Association: Upper MidWest
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Length has no effect on the vacuum/air/fuel flow. You want the lines long enough for smooth bends and easy routing.
Like we say with electrical wires; it's easy to make them shorter, not so much making them longer... |
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| Shivers |
Mar 28 2026, 02:15 PM
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#4
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Senior Member Group: Members Posts: 3,334 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
If you still have the old ones you can use them as cutting templates.
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| bdstone914 |
Mar 29 2026, 01:24 AM
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#5
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bdstone914 Group: Members Posts: 5,279 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
I like to make vacuum hoses a little longer than original. They go bad at the ends. When they do you can cut off the stretched, hard or cracked part and reuse the hose.
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| wonkipop |
Mar 29 2026, 04:07 AM
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#6
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914 Guru Group: Members Posts: 5,476 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille
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QUOTE(bdstone914 @ Mar 29 2026, 01:24 AM)  I like to make vacuum hoses a little longer than original. They go bad at the ends. When they do you can cut off the stretched, hard or cracked part and reuse the hose. spot on. (IMG:style_emoticons/default/beerchug.gif) |
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