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Old 01-13-2002, 09:24 AM   #1
FastRedWrx
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Question Another boost gauge install question

I've searched several times but have yet to find a definite answer. Question is, If using the nylon hard line to connect the boost gauge, what type of 'T' fitting is used. I'm having trouble finding out what others are using. Is there some type of T-fitting that has a NPT connections on it? Any help will be greatly appreciated.
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Old 01-14-2002, 09:25 AM   #2
143paul
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Default I'm haveing same problem

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Come on guys lend a hand - Thanks in advance
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Old 01-14-2002, 09:48 AM   #3
BullsWRX
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i got a VDO boost gauge.. and.... if you get the install kit with it.. it has an adapter. screws right onto a normal sized T.... i say normal.. cause i looked forever before figuring out it came witha peice to adapt to it. Theres just no way you'll ever find a T small enough to go in the nylon hose... least i couldnt. if you still need help tonight... I'll take a picture and show you what i did.
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Old 01-14-2002, 10:28 AM   #4
Cjchaps
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The auto-meter guage I ordered came with connectors for both sides of the vacumm, that screw into regular sized NPT fittings.
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Old 01-14-2002, 02:26 PM   #5
STi2001
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Quote:
Originally posted by BullsWRX
i got a VDO boost gauge.. and.... if you get the install kit with it.. it has an adapter. screws right onto a normal sized T.... i say normal.. cause i looked forever before figuring out it came witha peice to adapt to it. Theres just no way you'll ever find a T small enough to go in the nylon hose... least i couldnt. if you still need help tonight... I'll take a picture and show you what i did.
Why can't you find a tee-fitting? I just went to PepBoys and got a tee-fitting variety pack with all sizes, 1/8, 3/16 and the like. I was just wondering what size the stock vacuum hose is, I think it is 1/8 if I am not mistaken b/c I am going to use vacuum hose instead of the hose from the Autometer gauge b/c that nylon tubing will eventually break down/wear out. Thanks for the help.

Koz
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Old 01-14-2002, 05:52 PM   #6
FastRedWrx
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Default Nylon hose

I chose to go with the nylon hose since it is much smaller and therefore seems easier to route through the engine compartment and firewall. I had initally bought 1/4" rubber hose but when I looked at it I thought it to bulky to route to the steering column, maybe I was wrong.

The problem is in my kit I saw the npt adapters, 1 went to the back of the gauge but the other end looks as though it needs to screw into something with npt threads. The problem is finding a tee that has female npt threads so the compression fitting will screw into. I've seen on the web were some used a standard tee (no threads) and ran a short piece of hose from the tee to the nylon hard line and used zip ties to secure it. Not sure if that would work.

Well I went to a local hardware store and I think I found a workable solution. They gave me a plastic tee (1/4") that has 1/4" npt threads on the middle port. I then used a 1/4" to 1/8" coupler. The 1/8" male npt compression fitting that came with the gauge is able to screw into the 1/8" female coupler.
Sounds complex but I think it'll work and be more secure than inserting the hard line into the vacuum hose.
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