Compressor Wheel Damage from Ported Shroud Turbo?

[blownbuick]

Guys:

Please take a look at the following link and share your thoughts. Figure 2 allegedly shows compressor wheel damage from the "dirty air" in the area of the ported shroud of a compressor housing.

Blouch Turbo Inc. - Information on our performance turbo products

Anybody seen any of this take place? Patrick, please chime in if you read this. I have a Precision PT6776RHPS which is still in the box, new, and I'm now hesitant to install it with the ported shroud housing since I don't want my compressor wheel to end up looking like the one in the photo.

Any help or comments will be appreciated.

JT

 

[WSLN 6]

What photo would that be?

 

[Alky V6]

What they mean by "dirty air" is dusty air or worse. Exactly why I choose to use an air filter.

 

[RUQWKNF]

I don't think you will have any problems, as long as you run an air filter.
K&N for the win.

Over the years, I have seen damage like they are talking about, on race only applications that do not use air filters, just open face compressor covers. In those instances, yes, dust, smoke and debris will cause damage to the compressor wheel over time. FOD or foreign, object, debris, causes damage to compressor wheels.

Always run a K&N or similar filter on any turbo setup that will see street duty. Period.
Also, it's very imperative to check your new air filter before installing it. Check it for loose flakes of rubber inside the filter with a bright light. Those small pieces of rubber, which come from the manufacturing process, can cause damage to the wheel or the MAF.
And for the record, you have the exact same turbo that I currently run on Sarah.

HTH

Patrick

 

[blownbuick]

Sorry guys. Here's the pic that was at the site.

JT

 

[RUQWKNF]

That definitely looks like it was caused by a sand blasting effect. Dust/sout/FOD injested during WOT operation.

Not all Ported Shrouds are the same however. You will find differences in the location of the ported shroud slot from vendor to vendor. Whose is best, is really personal preference. But, the ideal location, has that slot located approximately in the center of the main and secondary blades. That wheel looks like the slot is located closer to the inducer of the blade.

Harry (Owner of PTE), Turbonetics engineers and Garrett engineers know a lot more about the specifics of ported shrouds then I will ever know. Guess I just know the college level info.
With a few more secrets thrown in.....

Patrick

 

[blownbuick]

Thanks for the info, Patrick and all others. Patrick, have you had a chance to run yours with the H housing?

JT

 

[RUQWKNF]

Was only able to make two passes last season before the tranny took a dive. I'm pretty sure the extra power of this turbo took it out. Going from a TE-60R at 27psi to this one at 27psi is a huge difference.
Still saving for the tranny now.