Originally Posted by Nkelly

Dan that chirping off ya turbo between gear change and when you back off,i was told is bad for ya turbo ?????

Originally Posted by 60RatRod

So let me ask you this Duztail, I just installed a WW as this thread shows, when the turbo was off and housing was off I checked both the old and new wheel for rubing and there was none. Additionally there where no signs of rubbing on the backplate as you may or may not be able tell in the pics. So is this just a result of the High speed parts causing some flex to the shaft under a load? The videos are filmed under a load a romping the skinny stick, not my normal driving conditions. I initially just wanted to get rid of the turbo surge I was expierencing when towing up large grades. I was also set to an 80 hp tune with a line pressure increase on the trans during the videos. Any input as to what your thoughts are here would be appreciated. I am always learning everday.

Originally Posted by 60RatRod

Im always learning something here everyday.

Originally Posted by Izzy351

The noise in the video is NOT metal-to-metal contact. It is the boost bleeding back through the intake side of the turbo. No, it's not great for it, but there is really no choice. However, it's not as bad as true turbo surge which happens at a certain RPM/engine load, NOT between gears. Let's not get that confused. Also, I've seen the term "turbo flutter", which some seem to link to surge, others refer to the sound the exhaust makes when you get rid of the restrictive muffler and can really hear that turbo sound.

I have none of that now with my combo, but I do get a little burst of noise (a "whoosh", not the "flutter") when I let off the pedal suddenly after a hard acceleration, but I try to avoid doing it.

Originally Posted by 60RatRod

Well today I only got a couple of things done, guess I will have to wait until tomorrow to install the turbo back into the truck. I had ran into some problems and called Bob, "GUZZLE" and he was able to walk me trough them. Thanks so much Bob, sorry to bother you on a Sunday but I was stumped.

Here's a look at the stock wheel, everything appears fine, little to no end play, inlet and outlet wheels look good. I don't know what do you guys think?

A comparison of the stock wheel and wicked wheel

Pulled off the Outlet in this PIC to get to the shaft and delete the outlets EBPV

Here is my gutted outlet

I started by grinding off the rivets that hold the butterfly trap

Then I just took a punch to knock out the rivets, the butterfly comes right out and then the shaft just slides out.

I used a socket to drive out the bushing the shaft rode on

Then I just cut a bolt to fit inside the bushing to weld in place

here's what it looks like welded in place

I reinstalled the welded bushing the same way it came out.

And this is it my deleted EBPV outlet all ready to bolt back on to the turbo

A pic of the Wicked Wheel installed and one of Bob's "GUZZLE"'s new Viton compressor housing O ring. I lubed it with White Lithium Lube ( I don't do Vasoline, LOL)

The turbo all ready to go back into the truck, you can see the shortened wastegate rod. I just need to torque the bolts down, I have no idea what the torque specs are, So if anyone can help me with that it would be greatly appreciated.

Originally Posted by SilverBullet131313

60Ratrod....that chirping you are getting is definitely not normal. It definitely is compressor surge and bad if you ask me. Under load or when letting off throttle, surge is surge and will wear your turbo and kill it at some point. May last years, may last a week but is harmful and not efficient at all. Basically when you are letting off the throttle the air/boost you built is backtracking and pushing back on the wheel. All pressure then is on the shaft which will eventually get alot of play in it and hit sides of turbo housing and the whole time just be very inefficient. Basically choking it, and more boost you run , the woese it will be. Did you have any front to back play on the wheel??

And You could get a ported cover which has bleed rings in it which give the back tracked air somewhere to go. But i just find it odd that the wicked wheel didnt help it at all. Your before and after vids is totally the same. So i would check things over before you drop coin on a ported cover to see if you can find any issues. Better safe then sorry. I just know what that is and what it does and can tell you my truck has NEVER sounded like that and i have same if not a few more mods then you. Plus been racing turbo cars for 15 years now I know compressor surge.

Originally Posted by Nkelly

This butterfly trap,is this what the WG arm operates ?????