Boost Gauge Install question

[00BlackBird00]

I installed my boost gauge today and have the line running through the firewall but I don't know where to go from here. Could anybody show me a good vac line on the drivers side of the engine? Also I have been to every parts store around and nobody has the 1/8 Npt tee fitting I need to tap into the vac line so a part number or place to buy it would be a lot of help. Thanks in advance

[Turbo V6 Camaro]

use the one on the fuel pressure regulator....

look at home depot for the t fitting

[00BlackBird00]

I was there and lowes lol have any other suggestions?

[Turbo V6 Camaro]

t off the line,,, get something from home depot with the little nipple

so your boost guage is a 1/8 npt?

you might have to use 2 apadpters for it to work

[00BlackBird00]

the smallest they have is 1/4 " thats the prob. You think I should get two adapters to make it go 1/4"? Also what size is the vac line you recommeded?

[Turbo V6 Camaro]

i know they make a 1/4 to 1/8th adapter then you can get the 1/4 nippler you need i ran into to same problem with my oil line for my turbo

[00BlackBird00]

cool thanks for your help and is that vac line a 1/8" or 1/4" just so i know what to look for

[Turbo V6 Camaro]

Originally posted by 00BlackBird00:
cool thanks for your help and is that vac line a 1/8" or 1/4" just so i know what to look for

1/8 is good

i personally like to use a small vac line and bigger nipple that way it will not blow off

[jmihalchik]

auto part stores sell platic vac tee fittings i know they get down very small there.

[grayman]

here you go.
http://home.comcast.net/~grayman99/V...onnections.htm

Also: you can flare the end of the copper tubing boost gauge line and slip the hose over the flare. I use small zip ties on all rubber/silicone hose connections as little hose clamps.

If you are using nylon tubing from the boost gauge thrue the firwall then check out by above link. I detail the types of npt fittings you need to transition from 1/8 to 1/4. It is ok to use 1/4 or 3/16 (suggested) for rubber/silicone hose connections becuase it just makes the connection tighter. use a little soapy water to lube the hose if need be...not oil or grease.

just in case....here is another link...it is for wireing into the fuse panel for gauges and stuff. I have more guides and info on my site for many FI related topics and mods.
http://home.comcast.net/~grayman99/fusepanel.htm
and
http://home.comcast.net/~grayman99/GaugeInstalls.htm

[00BlackBird00]

thanks a lot man i appreciate all your help

[00BlackBird00]

ok I have it all set up with a 1/8" t connection on the end of the hose coming from the gauge...Now I need to put that t into the vac hose but I was wondering how I shoud do this. Can I just cut the vac hose above the elbow and put the two ends of the 1/8" t in there or is there another way?

[grayman]

i have not cut any of the stock vac tubes.

for manifold vacuum/boost reading i put a T on a stock vac elbow and then one small section of vac tubing to the manifold where I removed the elbow. the 3rd end of the T is connected to the boost gauge.

before the boost gauge though I have another T. one end of the T goes to a one way check valve and from there to the FMU. the other end of the T feeds the boost gauge.

You could cut a stock vac hose but I just don't want to do that. they are made of an unfamiliar (sorta hard) material and I don't know how well they stretch over barb ends.

[Turbo V6 Camaro]

Originally posted by grayman:
I don't know how well they stretch over barb ends.

they don't at all, don't even try.. you have to have rubber hose to connect them.... :mad: