What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[Austinite]

You can clearly see here how high the factory tube joins the factory airbox, and at a small downward angle.



Verses those generic eBay kits...

View attachment 217142

Completely different height and angle make me pretty sure you couldn't just use the tube from one of the generic kits and have it work with the factory airbox.

Good point, I was curious about that myself.

 

[Doubeleive]

Anybody have the torque spec for the upper idler pulley, I tend to overtighten and break things

 

[Hi-psi]

Anybody have the torque spec for the upper idler pulley, I tend to overtighten and break things

Googling I found 37 ft-lbs.

 

[Doubeleive]

Googling I found 37 ft-lbs.

yep the German version gootentight which converts to 37ftlbs

 

[Hi-psi]

yep the German version gootentight which converts to 37ftlbs

I'm with you on the over-tightening tendancy too.

Me - Snugs it up
Other me - What if that isn't tight enough, you don't want that working it's way loose.
Me - Gives it another double grunt turn
Bolt - SNAP

F^&*^*K

LOL

 

[Doubeleive]

I'm with you on the over-tightening tendancy too.

Me - Snugs it up
Other me - What if that isn't tight enough, you don't want that working it's way loose.
Me - Gives it another double grunt turn
Bolt - SNAP

F^&*^*K

LOL

yep precisely

 

[BourbonNcigars]

^ I'm seriously OCD about torque values. If I don't know what a certain bolt should be at, I'll research it.

 

[CHOO CHOO]

I just tighten shit till it don't turn and give it a few more turns [emoji1745]

 

[iamdub]

I just tighten shit till it don't turn and give it a few more turns [emoji1745]

You just have to learn to go slow and feel for the point where it starts to go soft, right before the head twists off. Except for small Chinese fasteners. They snap with no warning and usually before their rated torque value.

 

[iamdub]

Verses those generic eBay kits...

View attachment 217142

Completely different height and angle make me pretty sure you couldn't just use the tube from one of the generic kits and have it work with the factory airbox.

If the eBay tube is cheap enough that an extra coupling and clamps is in the budget, or if you already had the tube and wanted to attach it to the stock filter box (to not have a HOT air intake) you could cut it where that bend is downstream of the MAF, rotate it 180°, and couple it back together. After this, rotating the rest of the tube on the throttle body upward would probably put that other end at just about the right angle to hit the factory filter box. You could always shave the cut part to get the angle spot-on.

I guess if you the angle perfect, you could epoxy it together then Plasti-Dip, rubber undercoat or sand and paint the whole thing to make it a one-piece tube.