3" lb7 ybridge

[ZeroGravity58]

Since I have the turbo off my truck its pretty easy to get the y bridge off. The pass side intercooler pipe on a lb7 is 3" until the end where it goes down to 2.5". If I would cut that off I could weld a ridge around the pipe so I could put a 3" boot on it. For the y bridge I could get a piece of 3" OD .125 wall aluminum tubing and have it welded on the y bridge where the 2.5 was. I would then just have to find a 3" boot and clamps. Anyone see any problems with this or have any pointers? I was going to wait to do it but it would only make sense to do it while I have the turbo out.

 

[Noreaster]

you going to go with an angled tube or a hose with a bend?
have to do something with the MAP sensor

 

[68skylark455]

I used a piece of the factory boost tube-had the perfect bend in it.

 

[ZeroGravity58]

thats a good idea. what part of the boost tube did you use? i have a new driverside tube coming with my install kit so i could use my old one. what did you do with the pass side boost tube? Where can i get 3" boots?

 

[Noreaster]

Where can i get 3" boots?

http://www.siliconeintakes.com/

 

[paint94979]

http://www.siliconeintakes.com/

doesn't work

you can try turbo hoses, silicone boots basically just go to google and search for it. Burns Stainless sells good quality boots and they will cut to any length you want

 

[quadracer37]

youll lose your intake heater to obviously but thats not a huge deal.
i plan on doing this to mine as well.
where is a good place for the map sensor to be relocated to, or just mount it on the new peice of tube?

 

[JoshH]

you going to go with an angled tube or a hose with a bend?
have to do something with the MAP sensor

I'm not sure if all 01 trucks are the same, but I worked on an early 01 a few months back that had the MAP sensor mounted in one of the intake manifolds (the piece that bolts to the head) rather than in the bridge.

thats a good idea. what part of the boost tube did you use? i have a new driverside tube coming with my install kit so i could use my old one. what did you do with the pass side boost tube? Where can i get 3" boots?

I needed a boot to replace the factory boot at the hot side of the CAC. After doing some looking, I ended up getting what I needed from here: http://www.siliconehose.com. I bought a 45 and a 90 because I wasn't sure which one would work better. I ended up using the 90, and it has held up flawlessly. The boots are 5 ply with 10" legs. I cut the legs on the 90 to the correct length, and had two straight pieces long enough to make two other straight boots. Anyway, I still have the 45 sitting in a box. I paid around $45 for it, I would let it go for $35 shipped if you want it.

 

[Bryce418]

I'm not sure if all 01 trucks are the same, but I worked on an early 01 a few months back that had the MAP sensor mounted in one of the intake manifolds (the piece that bolts to the head) rather than in the bridge.

the 01 was a freak all the other lb7's had it in the bridge. 01 also has a different bridge.

 

[ZeroGravity58]

Hey Josh i will let you know im aiming at trying to use a 45. My MAP sensor is not in the intake bridge like stated. It is in the manifold so thats one less thing i have to worry about. Before i cut the bridge up im going to take my driverside intercooler pipe and try to make that work. If not i will get a peice of 3" pipe.