1st Gen TRD Supercharger Vac Line Routing Help

Hi,

I've done extensive research all over the interwebs, but it's just making me more confused. I've got a 1st Gen (grey) charger rebuilt and ready to install, but I can't figure out how to route vac lines to three fitting on the charger

1).boost line 1
2).boost port 2
3).bypass valve actuator

Gadget lists it this way on his site, where boost line 1 goes to the Fuel Pressure Regulator, and the bypass valve actuator and boost port 2 are connected with a vacuum line:


BUT...mine came this way and have seen pics on the net of it hooked up where boost line 1 and boost port 2 are hooked up and the bypass valve actuator is T-ed into the Evap line like this:


The diagram on the 1st Gen install sheet makes a mention of it and says "bypass valve T-ed here", but then what do I do with boost port 2?


Thoroughly confused and need help.

Thanks!

 

I have a black sc and my bpv hooks up in the back of my sc right by the bpv. port 1 goes to evap port 2 goes to brake boost. or the other way around I don't think it matters. I would T into one of those with your bpv if you don't have a port for it in the back of your sc.

 

Unfortunatley (for me), the 1st gen appears a little more complicated (for me). Can't find a second gen vac diagram, but it's a little more straight-forward; TRD made significant improvements over the first one by moving fittings on the charger to where they are on the stock plenum, in addition to internalizing the bypass valve acutator which negates this silly vac routing problem I'm having.

 

http://m.yotatech.com/showthread.php?t=182220

there are trd instructions in pdf on parks and customtacos. diagrams are in the back pages

 

Thanks...I've got the diagrams. Customtacos is where I got the last diagram in the first post for the 1st gen charger. As you can see, it says nothing of the way the 2nd boost port and bypass valve actuator are hooked up.

Afraid the Parks Offroad 2nd gen diagram doesn't apply.

So...could someone with a first gen charger take a few pics of the back of their system? I pretty much need a close up of the bypass valve actuator and boost port 2.

Or...just need someone to explain why there are discrepancies with the two ways to hook up the three fittings and give me the RIGHT way to do it.


Thanks!!!

 

pretty sure boost port 2 goes directly to bypass valve and boost port 1 directly to fuel pressure regulator with a T fitting if you have a boost gauge on this same line. PM me if you still need the pictures of mine for when i get home.

 

That's how Gadget's got it, so I think that's the way I'll proceed. I just didn't want to mess up my new $150 fuel pressure regulator by sending boost to it if it's proven to mess it up.

Supercharger is installed so a couple vac lines and I'm set. Thanks for the post!

 

to what fuel pressure regulator did you change? most run on the stock one.

 

I just replaced it with a new OEM one. 13 year old truck, new supercharger...better safe than sorry is what I figured.

 

I am currently dealing with the same issue. I have my fuel pressure regulator plugged in where it says to put the 4x4 vacuum connection. My bypass valve is teed into the evap canister line. Boost port 1 & 2 are both capped on mine. Could someone please post a picture

 

The way Gadget routed it has worked trouble-free for me for the last 11,000 miles.

Boost port 1 goes to fuel pressure regulator

Boost port 2 goes to the bypass valve actuator

I can shoot some pics this evening if it's still unclear.

 

Mine is hooked up as yours was originally. The bypass valve is teed into the evap line. Boost port 1&2 are both capped. The fuel pressure regulator is hooked up to something else. Check out the picture.

 

Second part of that question is the bypass actuator has a much larger nipple than boost port 2 so it would seem like it is not supposed to be installed there????? Lost

 

Ok, so I have had mine setup by the dealer in 1998 with port 1 and port 2 that are tie together with a T connection, then that tube goes to the fuel pressure regulator and with a T for the boost guage.
The bypass valve is teed "T" into the canister tube in the back of the supercharger.
Has been running fine for 500,000 miles,
So were the vacuum lines installed incorrectly by the dealer in 1998? Or not?
What is the correct way,? like gadget shows??, port 1 to the fuel regulator which is correct I think and port 2 For the bypass valve? Or teeded to the canister tube in the back of the charger?
I think the question is which setup is correct for PORT 2 AND THE BYPASS VALVE TUBE
I see this setup is being used both ways,
1) bypass tube to port 2
2) bypass tube teeded "T" into the canister tube

Is there any differance if its done either way as I see both ways are being used??

If the bypass valve tube is tied into the canister then what goes into port 2?

 

Hey guys having an issue fitting my transmission kickdown cable into the bracket for the sc. it doesn’t have enough slack . How did you guys get it to fit in?