Qustion on Vac line from wasegate to turbo
10-27-2006, 03:52 PM
#1
0.5 BAR
Thread Starter
Join Date: Apr 2005
Posts: 82
Qustion on Vac line from wasegate to turbo
I am changing my turbo out for a bigger t3/t4. My problem is that the new turbo does not have a threaded spot on it to conect a fitting to run the vac/boost hose from my external wasgate to the turbo.
I think that hose is important cause it reads the amount of boost so the wasegate knows when to open.
I bought a tap and die set cause I thought I could just thread a hole in the turbo. But I don't think it will be that easy. Should I thread the vac/boost fitting in to my charge pipe by the turbo? Any suggestion would help me out. Thanks HMTers.
I think that hose is important cause it reads the amount of boost so the wasegate knows when to open.
I bought a tap and die set cause I thought I could just thread a hole in the turbo. But I don't think it will be that easy. Should I thread the vac/boost fitting in to my charge pipe by the turbo? Any suggestion would help me out. Thanks HMTers.
10-27-2006, 07:10 PM
#4
1.5 BAR
Join Date: Apr 2006
Posts: 1,147
Re: Qustion on Vac line from wasegate to turbo
air pressure is air pressure, its instant, if your using a boost controller put the vac line anywhere, it dosent matter, if you dont run the vac line to the intake manifold, that way you will get the right pressure your going for.
10-27-2006, 07:36 PM
#5
1.5 BAR
Join Date: Nov 2005
Location: Harford Co. MD
Posts: 1,241
Re: Qustion on Vac line from wasegate to turbo
if you hook a boost gauge up one at the turbo and one after the IC near the throtal boty the one by the turbo will read higher. the IC will lower your boost an so will your charge pipeing. to get the most acurate reading you want to get a source as close to your intake manifold as possible.
idk maby im just ------- retarded 
Originally Posted by Stealthmode
You should be able to get a couple more pounds of boost a little quicker taking the source for the wastegate at the intake manifold instead of off the compressor housing.
10-27-2006, 09:41 PM
#6
3.0 BAR
Join Date: Aug 2003
Location: NE-PA
Posts: 4,666
Re: Qustion on Vac line from wasegate to turbo
If you have a boost controller of some type it really won't matter where you put the vacuum line. I personally have it off the turbo, and if I want more psi I just turn up the wastegate spring on my setup (funky KKK adjustable wastegate :1). Your boost gauge should be hooked up to your intake manifold to get the most accurate reading of manifold pressure. Sure, you get a few psi drop through an intercooler, but I also noticed on my setup when my reference line for the wastegate came off the manifold, I made boost quicker as well 
Might be alright for a larger turbo setup but mine spools at 2800 as it is 
Might be alright for a larger turbo setup but mine spools at 2800 as it is
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