2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

What size vacuum hose?

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Old Oct 15, 2003 | 09:01 AM
  #1  
Ryde _Or_Die's Avatar
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From: Tampa, FL
What size vacuum hose?

If I wanted to redo all my vac hoses with silicone ones, what sizes and how much of each would I need? That is if anyone would know. Thanks for any help.
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Old Oct 15, 2003 | 09:23 AM
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1987RX7guy's Avatar
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From: Laredo, Tx
I beleive they have a KIT on the rx7store.net for around 90 dollars. I think you need is 3.5mm 6mm or 10mm. :-/
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Old Nov 26, 2003 | 09:21 PM
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From: Delaware
You need: approx.
vaccum:35ft.4mm-10ft.6mm
fuel :5/16 HP fuel injectin hose
coolant: 5/8 & 5/16
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Old Nov 26, 2003 | 09:28 PM
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3.5mm Is just right. Going 4.0mm, for example, Is not neccessary. It's more likely to lead to popped off hose ends as opposed to 3.5mm's. Providing you don't zip tie them. I used 3.5mm's In both my NA and TII.
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