Jim Calandrella

OK. I need some help. When my mechanic put my 99 twins on, he messed up 2 vacuum lines.
The first line is the upper nipple, farthest from the fire wall, on the top of the intake manifold. He didn't even hook that up, because he said it was "extra".
My *** it was extra............
Rumor has it that that hose is supposed to go to the blow off valve closest to the air box. Is that true?
2nd question........
He connected the bottom nipple, again, farthest from the fire wall, on the the manifold , to that blowoff valve. I believe that to be wrong........and so does my motor, because i'm pulling more vacuum than I should, and I have NO boost.
So, where does that vacuum line go?
This should be a simple switch-a-roo, but I don't have my manual with me.
Any help would be greatly appreciated.
Thanks

MrRx

iTrader: (1)

The stock BOV should pipe to the UIM, on one of the two nipples, Im not to sure what you mean about the other.

jaj1

If you are refering to the two pipes that are located on the passenger side of
the UIM, the ones that are on top and easy to get to. The one closest to the
firewall is blocked off from the factory and is used for your boost gauge and
the one closest to the front of the car goes to the blow off valve/air bypass valve.

vacumm hose diagram
http://web.newsguy.com/geesaman/vac_...iagram_dlg.jpg

Jim Calandrella

well, the other one is almost directly below it on the lower manifold(I guess is what you'd call it).
From what I can see, there are 4 nipples all together on the manifold. I'm talking about the two farther from the fire wall, on the upper and lower manifold.
Does that make sense?

MrRx

iTrader: (1)

The four on the Lower intake manifold?

Jim Calandrella

Nice, that's what I thought. I have the boost guage, but the other one is just not hooked up to anything.
Now, what about the one below the one that gows to the blowoff valve.

Jim Calandrella

Ok, I went and looked. Now that it's daytime, I can see what's going on.
Right below the hose that goes to the blow off valve, there are three nipples right above each other. The middle one is what's running to my blow off valve(in error). That's the one that I need to find the proper destination for.

MrRx

iTrader: (1)

The middle line should go to your charge relief valve, on the turbo's

jaj1

Check the vacuum hose diagram for the four pipes that come out of
the lower intake manifold. Again the two pipes that are on the top/side of
the upper intake manifold are for boost gauge and blow off valve.

http://web.newsguy.com/geesaman/vac_...iagram_dlg.jpg

Jim Calandrella

That valve is on the top of the turbo from what I can tell in the diagram. Is that accessible from the engine bay, or am I doomed to put it on a lift again?

MrRx

iTrader: (1)

if you take off your intake, you can get it to easy.....

Jim Calandrella

i'm going to go look now. I'll be back

dubulup

those nips on the LIM are pass thru nipples. Make sure there is something hooked up on the other side.

Boost gauge goes on nipple on UIM closest to FW, BOV UIM nip, closest to BOV

are you seq? full emissions?

edv

Maybe it would be easiest if you just pointed out which nipple number on the following photos. Then people can chime in with absolute certainty.

Jim Calandrella

wow, impressive. I'll tell you after lunch. I think there is more F'd up here than one hose though. This is not going to be a switcheroo that I think I want to get into on my lunch hour.
I'll look though.

Conv.WS6

Jim, I would print out the diagram, and trace them all, since your mechanic doesn't know what he is doing.

DamonB

There are 4 nipples right in a row on the LIM. Those nipples actually pass through the LIM and are connected to solenoids on the rack. The 4 nipples do not connect to the LIM itself, they just pass through on the way to the solenoid rack.

The blowoff valve may be connected to anywhere between the throttle plates and the motor. Any of the nipples on the UIM can be used for this as all of them are behind the throttle plates.

The nipples rom top to bottom on the LIM go:

to egr valve on outside of LIM

to a nipple on the y-pipe that is located just behind the charge relief valve

to the charge relief actuator itself (the actuator on the y-pipe closest to firewall)

to the charge control actuator (the actuator on the y-pipe closest to the outlet)

Jim Calandrella

What's up man? Haven'te heard form you in a while....
How's the car?
Anyway, I did try to print it, but it won't print all of it, because my work setup is so ghetto here. That is a great diagram.
Tracing those lower nipples is hard right now. I really don't want to take anything apart at work, and get into trouble, but I need to get some things out of my way.

Conv.WS6

Hey Jim, I'm doing well. I parted the rex, and sold the rolling chassis. I still lurk around here to find either another rotary to play around with or a <dare i say it> V8 converted Rex. LOL..... How have you been? How is Boston treating you?
I was there twice for work, but never got around to the nightlife. Anything worth going there for?
later on.
Ralph