Author Topic: Throttle Body vacuum port size?  (Read 428 times)

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Offline JerBear

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Throttle Body vacuum port size?
« on: March 03, 2019, 02:26:16 am »
Does anyone know what size tubing and material type works best for connecting the vacuum ports when doing a Throttle body Synch?   I assume Rubber would work best as It's what most of the other tubing is but I need together some for the connectors when I get it done.

It looks as if 3/8 O.D. / 1/4 I.D. would work but needs to be be snug to seal it well.
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Offline Jeffrey

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Re: Throttle Body vacuum port size?
« Reply #1 on: March 04, 2019, 06:49:36 pm »
The ID needs to be 5mm (3/16).
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Offline MAN OF BLUES

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Re: Throttle Body vacuum port size?
« Reply #2 on: March 04, 2019, 08:31:58 pm »
IIRC I used 3/16" i.d., vacume line, with a thick wall...came in a 3 ft length, in a package from the junk wall at AutoZone.
I also bought "inline" splice fittings, and used those on the ends I left dangling and capped using the caps I pulled off the T/B.

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Offline JerBear

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Re: Throttle Body vacuum port size?
« Reply #3 on: March 05, 2019, 09:09:57 pm »
Thanks guys!  that helps
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Offline IBAJIM

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Re: Throttle Body vacuum port size?
« Reply #4 on: March 12, 2019, 06:21:05 pm »
Came across this stuff the other day.  Haven't seen it in bulk anywhere else, yet.  It's high quality.  Much better than vacuum hose.  They have it in 5mm.

https://www.klsupply.com/carb-fuel/k-l-genuine-premium-2-layer-fuel-vacuum-lines.asp
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