Ok, installing the turbo in a couple days and i'm seeking advice for the best way to do the vacuum lines. Yes, I have searched.

BOV to the brake booster?
WG to the compressor?

2001 Integra GSR

 

bov and wg off brake booster, or one brake booster one intake mani. the compressor isnt good to run your wastegate off of cause it isnt the vacuum that in the intake manifold. it before the intercooler which lowers your boost a little

 

Would it be alright if I did run the bov and wg from the same source, or should I look for independent vacuum sources for each?

 

if you can do independent ones than fine, but definitely use the brake booster. its an excellent source for vacuum.

 

What other parts require vacuum besides the WG and BOV?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris1091 &raquo;</TD></TR><TR><TD CLASS="quote">What other parts require vacuum besides the WG and BOV?</TD></TR></TABLE>

fuel pressure regulator, boost controller

 

boost gauge also. I have my BOV off of my brake booster (awesome choice i may add, made it alot louder and crisper) boost gauge off of intake manifold, an wastegate to turbo just like my instructions said. ive heard the cruise control vacuum is good too for something small like a gauge, but before the check valve.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TeStUdO &raquo;</TD></TR><TR><TD CLASS="quote">bov and wg off brake booster, or one brake booster one intake mani. the compressor isnt good to run your wastegate off of cause it isnt the vacuum that in the intake manifold. it before the intercooler which lowers your boost a little</TD></TR></TABLE>

A wastegate doesn't need vacuum, only pressure...

 

refering to getting your vacuum/boost source from the brake booster, how exactly do you do that&gt;?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DLOTYPER &raquo;</TD></TR><TR><TD CLASS="quote">refering to getting your vacuum/boost source from the brake booster, how exactly do you do that&gt;?</TD></TR></TABLE>

i want to know this as well

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by krazySOHC &raquo;</TD></TR><TR><TD CLASS="quote">

i want to know this as well</TD></TR></TABLE>

 

I have the boost gauge ran from the FPR. Is it necessary to have that GE peice with the brake booster? Could I just run a straight tee from the brake booster to the BOV?

 

yes your auto parts store should have a T that is 3/8" in and out, and the T is 1/4" that should be perfect for BOV on the brake booster. you have to use like a hacksaw to cut through it, and use HOSE CLAMPS!!!! on all 3 hoses. and do it BEFORE the check valve. ive seen those GE vacuum deals, it sounds like a good idea, but i never thought it was good to have more than 1 thing off of 1 source. ive always heard to make each source independent. plus whatever port you want to use on those things i think u have to drill it out. anyway hope that helps!

 

To me, the best $35 you can spend. Golden Eagle Vacuum box.




Works perfect. I only have 4 of the 6 tapped but will be tapping a fifth for the 3 bar map sensor soon.

 

that's a pretty clean/organized vac setup

 

yeh i love that vac box!

heres mine off the brake booster.... the black lines that im lifting up...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">

A wastegate doesn't need vacuum, only pressure...</TD></TR></TABLE>

still wouldnt the pressure be different at any given time at the compressor then it would in the intake manifold due to the intercooler?

 

Yes, the pressure is different at the manifold than at the compressor, by about 1-3 psi. Any more and you should get a bigger I/C.

Mysetup:

Brake Booster =&gt; no other connection
FPR =&gt; boost gauge
Purge Sol (manifold) =&gt; BOV
Compressor Outlet =&gt; Wastegate

I was going to drill/tap hole in manifold and run one 1/2" line down along side the charge pipe, tee at the BOV, then connect to the WG. That would hit both places with a single hose.

The other connection you haven't mentioned is the PCV valve/ valve cover + intake recirculation. If you still have the fact PCV connection that's good, but I don't. I had to connect the valve cover port to the intake (upstream of turbo), and tee that with the PCV (yes it's phuckd), but it worked.

Keep posting your setps please, I need some ideas too!

 

id like to know more. good thread.

krazy

 

where can you buy the vacuum box????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phthalo &raquo;</TD></TR><TR><TD CLASS="quote">where can you buy the vacuum box????</TD></TR></TABLE>

McMaster Carr. Get the GEM one and all your paying for is the Eagle cut into the front of it.

 

Wastegate vac line should be hooked up at the compressor outlet as stated by Corky Bell.

Pros and Cons for hooking line at compressor outlet:

"The signal originating at the compressor outlet offers the best control over the wastegate with regard to its response and ability to consistently control boost to a given value. Tha bad side is that torque-curve rise will suffer slightly, as this source will create the earliest possible wastegate cracking point. This early craking point will offer some relief thermally, because the entire system will virtually never see more boost than the basic setting of the wastegate. This can be important in avoiding a quick heat soaking of the intercooler (Bell 147)."


Pros and Cons for hooking line at intake plenum:

"The intake plenum signal source will slightly improve boost response, since the turbo is free to make all the boost it can until the pressure reaches the signal source and is transmitted to the wastegate. The fact that the turbo is free to make a brief spike of boost will cause the intercooler to be hit by a greater slug of temperature. Greater temperature is always to be considered a negative (Bell 148)."
"Sourcing the signal from the intake manifold should be considered only when turbo response is of the highest importance and the short blast of extra heat can be tolerated or ignored (Bell 148)."


Bottom line is hooking the vacuum line up to the intake manifold will cause boost spike and a wave of heat to hit the intercooler. Hooking up to the compressor outlet will prevent this. The negative about the latter setup is that "torque-curve rise will suffer slightly," as stated by Corky Bell.


Modified by Andrew 825SM at 4:54 PM 6/2/2003

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Andrew 825SM &raquo;</TD></TR><TR><TD CLASS="quote">Wastegate vac line should be hooked up after the compressor outlet as stated by Corky Bell.</TD></TR></TABLE>

I dont agree. Then your wategate would start to open before the pressure drop of the intercooler and all the piping. Its best to take off the brake booster.

 

if you go off that theory, than you need to set the wastegate by your boost gauge. you may set the wastegate/controller at say 10 psi, but your guage is only reading 8... then, up the controller a little bit, until you read your 10 at the map.