Thread: BOV Question *searched* NEED HELP!

now get out there and have some fun

So, MSPaint me some clarity someone! lol Do I need to 'T' into the blue line from the FPR? (although I suspect that's fuel...) or the black on on the bottom?

So...red? Or blue?

Where does that line that's already connected to the BOV go?

I'm not sure, to be honest. Doesn't look like it goes to Mani. pressure...I think it's into the charge pipe, and 'T'd' off for the boost controller. I need to get a flashlight to take a closer look. But it's the upper hose I'm concerned about. All I really need to know, is where is a good source of vacuum. TeKKiE recommended the FPR, but I'm kind of new to SR's, and am unsure which hose on the FPR would be vacuum. I didn't want to guess and get it wrong.

your idea would work since it sees boost and vacuum.

However I would look into getting a vacuum block to help clean up that rats nest of vacuum lines.

Ok...which line will work? There are two to the FPR, I'm assuming one's fuel, (don't need that for my BOV lol) and the other is vacuum...which is which?

As for the vacuum block. That's a great idea. I'll probably do that this summer when it's a little warmer and I can spend a little more time at my friend's shop. Thanks for the tip though!

Wow, that's a mess...

Ummm, from the looks of it all of those blue silicone hoses are manifold vacuum (except for the one coming out of the charge pipe right before the coupler that connects it to the throttle body, that sees boost only). They must get signal from the FPR provision on the manifold and it looks like it then gets Tee'd off twice. One of them goes to the FPR, and the other signal goes to the brass fitting in the bottom of the first pic.

I don't see any fuel lines. They must be black/hidden?

There's an awful lot of vacuum lines there! I thought the lowport motors were bad!



This will suffice for now, but I'm trying to get you the CORRECT vacuum diagram for a DET. Mike on the other forum had pictures highlighted from the FSM, but they're down. Once I find them I'll repost them here.

Here's a diagram for bluebird turbo vacuum line routing.

VERY simple.

Ok, thanks guys. I made some advancements in the past hour actually. Here's what I found out:

I look at the hose already connected to the BOV, and it looks like it's running to manifold pressure. So, what I ended up doing (with the help of a friend on the phone) was switching that line, to the TOP nipple on the BOV, adjusted the BOV tension, and now it actually blows off. But then it was stalling...but I found out it was stalling because I took the recirc hose off to see if I could feel the air coming out...and now I can. So, I put the recirc hose back on, and drove her. OMG what a difference! The guy I bought it from said that the most boost he was getting was 10psi...and so that's what he set it at. Well, I think I need to readjust the boost controller, because it's going to about 12psi now. Which I guess isn't TOO bad...and it's not creeping up from there...so maybe that's ok...? But oh man, it feel SO much stronger and faster now. It actually kind of scared me at one point! But, no more compressor surge, so that's a good thing.

EDIT:
So, really...I guess my next question is; what can I do to run atmospheric? I don't really have to...I just like the sound. But I guess the problem now is that since the maf is metering a bunch of air, and then suddenly none...it's dumping fuel, and dieing on me.