What are the down falls of holding the waste gate closed? Any chance I could grenade the turbo?

 

Possible yes.

But the problem is that once you exceed a normal range of efficiency then the drive pressure rises above your boost pressure which is known as choke point and now the boost air becomes hotter.

Kind of like this...

 

Ok, so If it turns out my waste gate is bad, what should I do replace it with? Should I try to get one that opens up at a higher pressure? I want to add power , but I don't want to at the expense of grenading a turbo and sending it thru my motor.

 

I'm using a HX35W turbo (stock) on my truck with a Edge Products boost elbow. That allows me a max boost pressure of 35 PSI. I've added RV275's and Edge Comp and have plenty of power with the two mods. Since I'm building around the stock turbo because of my exhaust brake I'm at my limits per say.

The biggest problem is people add way too much fuel and increase the turbo to much and end up with a seriously laggy turbo and extremely smoky daily driver. I've managed to produce roughly 400 HP and do it completely smokeless and still hold low 20's MPG as a daily driver. My current problem is I can out right smoke 2nd gear and bark 3rd gear give you an idea of my power.

I'm more of a work truck than a toy...
https://www.dieselbombers.com/24-val...tml#post991234

 

Thats me also, Sure its cool to have a fast truck, but in my opinion these trucks were built to work. If I want something fast, I'll buy a camaro,or mustang etc.

Ok, I can't ever remember what turbo my truck has, its an auto and its stock. Is the boost elbow the one that will have a set screw in the bend off it. I think I have one of those somewhere. but I was told not to put it on a turbo that is in a auto trans truck.

 

Ahhh... You got a HY35W turbo with a hard line. So yes a good upgrade would be to to jump for a HX35W. That would get back to normal par with the rest of the group.

I'm not so much as fast but good solid trailer tower, good MPG, and reliable. I'm sure there is lots of truck out there that can whip me for sure speed wise but where I got them hand down is the MPG game.

 

So Ive got the HY. Yeah you have done what I will eventually like to do to my truck. Good trailer puller and easy on the fuel. Right now, I don't want to do a whole lot, until I get my trans upgraded. I pulls good and shifts good, but saving for a TC and Valvebody. So I'm somewhat taking it easy until then. But I do need to get all my air leaks fixed. I bet my EGTs will drop some If I can get more air moving.

 

Here yo go for the boost leaks...

Then if you use a J-hook on the HY35 you can build some more boost but don't get much over 30 PSI because of the choke point of the 9cm2 exhaust housing.

 

Thanks for that video, and pic of the J-hook. Now need to find time to run to the hardware store and some supplies.

---AutoMerged DoublePost---

I'm the type that likes to know how something works, So I ask, how does a J- hook work. apparently it holds the waste gate shut. what until it reaches a certain point to over come the spring tensions then open up?

 

When you go to building that much boost just remember egts can be serious learned my lesson hard