TD04 upgrade time, a couple ?'s first.

Bdub · Post by **Bdub** » Fri Apr 18, 2008 9:40 pm

Okay, I'm pretty damn sure I read every thread that has to do with the turbo, tmic, and other goodies.
I'm slowly gathering what I need before I take on this project, so far I've got a TD04 off an 06 wrx, a tmic off an 07, a BOV adapter so I can use the stock bpv, and a rather inexpensive boost gauge.

First thing I want to do is see what the stock turbo is putting out. I can see where the best place to T into the Vac line is for the gauge, but my one question is, what size "T" did some of you use? I looked at Napa, and there were a few odd sizes...I was prepared to buy one of each, but I decided to ask instead of doing that.

skid542 · Post by **skid542** » Fri Apr 18, 2008 11:03 pm

I think I used an 1/8". Your best bet, if your budget allows, is to get one of the boxes that has a large assortment of couplers, tee's, transitions, etc. for like 10 bucks. It'll last a long time and as you get into things and start replacing the old vac lines you're going to want to replace the connectors as well. I know it's already paid off for me.

My .02 at least.

555BCTurbo · Post by **555BCTurbo** » Fri Apr 18, 2008 11:10 pm

Don't T into the turbo, use the takeoff under the brake booster hose...It will give you a manifold pressure reading

SubaruNation · Post by **SubaruNation** » Sat Apr 19, 2008 1:33 am

i still need to fix that......... t size doesn't matter as far as i know

Bdub · Post by **Bdub** » Sun Apr 20, 2008 7:09 pm

I've found a T that will fit the car's oem vac lines, however the nylon hose from the gauge is way too small in a dia. to work with my T. I can't find a T any smaller than 1/8, but even if I went smaller, then the vac lines won't work with it.
Any solution to this? I've been to about 10 diff. hardware and auto stores with no luck.

asc_up · Post by **asc_up** » Sun Apr 20, 2008 8:00 pm

If I were you I'd scratch the nylon hose. Go to an auto parts store and get some actual vacuum hose.

SubaruNation · Post by **SubaruNation** » Sun Apr 20, 2008 8:22 pm

don't use that BS nylon/brass fittings.

i will upload a pic of how mine is set up.

it's just a hose over the top of the connector. don't use any of that other stuff

and T size doesn't have to match up. as long as it fits and you dont lose/gain air from unintended spots you should be ok

Bdub · Post by **Bdub** » Mon Apr 21, 2008 8:39 pm

Thanks, it occurred to me after looking at that hose again that I may as well just use some rubber hose instead.
I sort of mocked it up yesterday, but I couldn't find any vacuum line under the master cylinder. Perhaps earlier models are different?

SubaruNation · Post by **SubaruNation** » Mon Apr 21, 2008 10:03 pm

Bdub wrote:Thanks, it occurred to me after looking at that hose again that I may as well just use some rubber hose instead.
I sort of mocked it up yesterday, but I couldn't find any vacuum line under the master cylinder. Perhaps earlier models are different?

im not sure, but as long as you dont gain/lose pressure you should be OK

keirnna · Post by **keirnna** » Mon Apr 21, 2008 10:18 pm

If your t fitting is a bit to big just hit it with some WD40 and push it in. It will go in and stay there for a long time.

555BCTurbo · Post by **555BCTurbo** » Mon Apr 21, 2008 10:23 pm

Bdub wrote: I sort of mocked it up yesterday, but I couldn't find any vacuum line under the master cylinder. Perhaps earlier models are different?

That's because there isn't one...the takeoff I was referring to is under the brake booster hose, where it connects to the intake manifold.

Bdub · Post by **Bdub** » Mon Apr 21, 2008 10:37 pm

Thanks. Reading Comprehension isn't my strong point I guess. I see it now. This is going to the bpv, correct?

SubaruNation · Post by **SubaruNation** » Mon Apr 21, 2008 10:51 pm

here's a pic of the T, mine is in a different spot. i will move it eventually

BSOD2600 · Post by **BSOD2600** » Tue Apr 22, 2008 7:53 am

Here is how I did my t for the boost line going into cylinder #1 (err front left one

). The empty ends obvious get spliced into the line going to the cylinder.

,

Nice snug fit with no leaks.

555BCTurbo · Post by **555BCTurbo** » Tue Apr 22, 2008 7:55 am

Bdub wrote: This is going to the bpv, correct?

Yes...that is the one

Richard · Post by **Richard** » Wed Apr 23, 2008 5:35 am

Mine's overengineered a bit. Must have been the German side of me that came up with it. Big brass tee with a compression fitting on one for the boost gauge and a ribbed brass hose fitting on the other two. Pretty compact as far as brass goes.

Bdub · Post by **Bdub** » Thu Apr 24, 2008 9:03 pm

Thanks for the help. I have it all hooked up and working. I should have just paid the extra $10 and bought the autometer gauge.
The needle in this piece of crap doesn't even go back to "0". So much for accuracy.

keirnna · Post by **keirnna** » Thu Apr 24, 2008 10:26 pm

Bdub wrote:Thanks for the help. I have it all hooked up and working. I should have just paid the extra $10 and bought the autometer gauge.
The needle in this piece of crap doesn't even go back to "0". So much for accuracy.

It may need calibration.

SubaruNation · Post by **SubaruNation** » Thu Apr 24, 2008 11:40 pm

keirnna wrote:
Bdub wrote:Thanks for the help. I have it all hooked up and working. I should have just paid the extra $10 and bought the autometer gauge.
The needle in this piece of crap doesn't even go back to "0". So much for accuracy.
It may need calibration.

or a VDO

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TD04 upgrade time, a couple ?'s first.

TD04 upgrade time, a couple ?'s first.