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what size clamps for vacuum and coolant lines?

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Old 02-11-02, 02:14 AM
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what size clamps for vacuum and coolant lines?

looking to get some new clamps for some of my coolant lines and some of the vacuum lines in hot areas. i wan to buy some Machine-Screw Hose Clamps (like mini t bolt clamps) but dont know what sizes to buy. any one know what size to buy for 1/4, 3/8, 1/2, etc hoses? here are the size clamps avalaible.

15/64"- 21/64" 6.0-8.3

9/32"- 3/8" 7.0-9.3

5/16"- 13/32" 8.0-10.3

23/64"- 29/64" 9.0-11.3

25/64"- 31/64" 10.0-12.3

7/16"- 17/32" 11.0-13.3

15/32"- 9/16" 12.0-14.3

33/64"- 39/64" 13.0-15.3

35/64"- 41/64" 14.0-16.3

19/32"- 11/16" 15.0-17.3

TIA everyone.
Old 02-11-02, 04:28 AM
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When I re-did all my fuel lines I used mini screw type clamps and noticed after a few engine heat cycles I had to tighten them all down again as they began to leak. You will note the factory hoses always use a spring type clamp that will always keep a constant pressure on the hose (as long as hose is still pliable.) I feel these spring clamps are best, especially in areas you can't get to to re-tighten once assembled. Anyone else?
Old 02-13-02, 05:47 PM
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good thought blue TII. i think i might hold off on this then cause what you are saying is correct. the only thing is, the spring clamps get weak after you clamp them open several times.
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