Engine/Transmission (1998.5 - 2002) Killing the waste gate

[JCarrell]

Is this ok to do on my truck... Right now i'm seeing 40psi. max

 

[Harlan]

Do you have a full set of gages and know the perimeters that you can run in. If so you are in good shape. My 02 will run to 43 lb with know worry if I use my gages.

The good thing is the power increase. Do you have a boost fuller so you do not set a fat code?

Harlan

 

[JCarrell]

Yup i have full gauges. . only one i dont have is fp. . Ordered that today. . As for boost fooler. . uve got me lost on that 1. Mine has not set any codes yet. . i do have this though http://www.haisleymachine.com/Anti Defueling and VBA.htm the add

 

[Whitmore]

I disabled my wastegat on my oem hx35 and was seeing 38 psi of boost, worked very well, performance was up good but the turbo shelled out a bearing less than a year later, lots of rpm there.



Cheers, Kevin

 

[rfcom]

That A. D. D is exactly what I was planning on building. I know how electronically, but just don't have a source for the MAP connectors.



Jim

 

[RustyJC]

If you're seeing 40 PSIG boost on an HX35-W, you're way off the performance map of the compressor. That means that, due to low compressor efficiencies at that compression ratio, you're building tremendous heat in the compressor discharge air. As Kevin said, the turbo RPMs would be astronomical as well.



Around 34 PSIG is the generally accepted limit for an HX35-W. That's what my truck runs as equipped (see signature) and with the Edge-supplied boost elbow that came with the EZ.



Rusty

 

[Ray Torresdal]

waste gate

I have to wonder how many have trucks with waste gates that are stuck? I have my truck in for valve adjustment, RV275 injectors, and an intermittant hard start problem. The mechanic (not a dealership - independent guy with a hospital clean shop!) called today to tell me my waste gate was stuck - 50psi wouldn't move it. I've had a PS boost fooler and VA for about 100,000 miles, never see over 26 or 27 lbs. boost, and evidently with boost elbow that never exercises the waste gate. I told him to leave it stuck until we see how much boost we see with the 275's. I won't worry about it, unless it is easy to bump above 32 or 34 lbs.



Ray

 

[Rebel_Horseman]

My Power Puck didn't come with a boost fooler and my max boost is the stock 19 lbs! I need more boost bad, but I don't know how to go abotu getting it. I'd rather not have to worry about setting codes but at this point I'm willing to try anything. I don't want to get excessive and I'd like to have somewhere in the realm of 35 lbs of boost. Any suggestions?



Brian [><]

 

[Turbo Horseman]

Anyone litterly blown there engine up... or in other words... popped it?

 

[RustyJC]

Yes - run a search for "head gasket" and you'll find a number of failures at high boost levels. Because of its higher static compression ratio, the HO is particularly vulnerable to this, especially with propane, etc.



Probably the larger risk is to the HX35-W itself at consistent boost levels above 34 PSIG. It's running compression ratios and speeds much higher than it was designed to do.



Rusty

 

[C. Harlan]

disconnect your wastegate, so you can blow your turbo like I did!!! 49 psi and pop she went!!!



Its not worth it... get an adjustable elbow... trust me. .



-Chris-

 

[TIngram]

get an adjustable boost fooler, you will be happier with this, my wastegate was stuck open for a long time i finally fixed it and put an adjustable fooler in it. in my opinion the hx35w is a great turbo that does a good job if you watch your gauges.