I need a vacuum source for my wastegate. anyoje using their brake booster hose.??

and if you are, how did you do it... just a giant tee into a smalller fittin??? just curious.

 

I didnt use the booster for my source, but yes...just use a tee reducing thingeemabobwhosit

 

i believe i am, i forgot where i hooked mine up at me. but i am almost positive.

 

I am, and I believe it works better since its a larger line. Wastegate, when running off its spring, seems to open later in boost --a good thing.
Yeah, just use a reducer T . Make sure you put it in between the manifold and the check valve or bad things can happen!

 

My WG is on the brake booster vac. I followed 93LSivics suggestions from a post he made a while ago. I got a T that tapers from big to small and you cut it for your particular size hose that it's connecting to. Got it at Checker...

Justin

 

ANyone have any pics of their setup????

 

Where do you think would be better, the brake booster, or the line that goes from the manifold to the fuel pressure regulator? I was gonna tap from the manifold, but may change if its gonna cause a problem.

 

use the FPR vac line for BOV and Boost gauge. I am going to be using the Brake booster line for my wastegate.

 

i recently moved my bov and tial to the brake booster line and now, my bov works perfectly. the turbo's response is much quicker but i couldn't tell any difference on the wastegate. i went to home depot looking for some reducers but had no luck. after looking around the air compressor section, i came across some called an "air compressor manifold" this basically a small unit that has one large port that hooks up to the main vac. line and 3 smaller ports to hook up barb fitting that splits into other vac lines. all in all, i'm pretty satisfied w/ its function and has a bit of a bling factor to it too i'll try to post pics asap

 

yeah pics

 

i tought i was the only one that did that
heres a pic of mine...i know i need to get rid of the fmu

 

that pic doesn't work

 

I bought one of those plastic universal T fittings that you just trim down to the size you need. It was flimsy, the opening just didn't seem large enough and I didn't trust it. I went to Home Depot and spent a few bucks more for some good brass fittings and hose clamps.

Get this female T fitting in 1/4":



Then get 2 of these fittings in 1/4" x 3/8" and 1 in 1/4" x 1/4":



Get some teflon tape and 2 hose clamps and you're done!

 

i guess yahoo wont let me link off their site

 

Why does your wastegate need a vacuum source, are you talking about your blow-off valve?

 

 

uhhh....

 

Is all that silicon hose going to a boost controller?

 

the top one is going to the boost controller and the side one is the vacumm sorce as you can see tapped into the brake booster.

 

I cant see how thats an efficient way to do it, but if it works...

 

what if u dont want to use a boost controller? would u just leave the fitting on top of the wastegate unplugged?

also, what is the difference between hooking up the wastegate vaccuum to the little hole on the side of the compressor housing instead of the brakebooster?

 

if you use the port on the compressor housing, the wastegate will read boost at the compressor. pressure is lost going through the intercooler so the manifold won't see the same pressure as the wastegate.

if you have a MBC, then you can do it

 

Now im alittle confused... Tell me if im wrong or right.

If you are using a manual boost controller, you run a line from the SIDE of the wastegate to the controller to the vacuum on the manifold. And you leave the top fitting alone.

If you are using an ELECTRIC wastegate that is when you use the top fitting..
correct???


Oh, and i didnt know that BOVs needed a vacuum source. I thought they just worked by themselves....

 

The job of a wastegate is to regulate the pressure at the turbine, not the pressure at the manifold. The lower port of the wastegate should be feed from the turbo compressor or as close as possible.

The MAP sensor line that goes to the boost controller needs to see vacuum and should be tapped directly off the intake mani.

All runs of vacuum hose should be kept as short as possible to reduce latency, especially with embedded logic boost controllers.

The top port of the wastegate goes to the boost controller solenoid and needs to be as short as possible also.

Many different setups will work but some may result in boost spikes or poorer performance from your boost controller.




[Modified by philo, 2:51 PM 12/17/2002]

 

hmmm , i was just gonna tap all my vac lines off my port from the im to the fpr too .
you think for the wg and bov it will make a diff to get vac sourde from the booster?
im lost now ? i thought i had it all down then you guys came up with this?
is there really a diff as long as it gets vac?