K04 Differences: K0422-582 vs. K0422-881 / K0422-882

[torquemaniac]

Its scaled to 1 : 5,8294...anybody can see that...lol

This subject was also discussed here :

K0422-881 and K0422-882 differences?

[BAT-man]

Originally Posted by torquemaniac I once tried to take some pictures, but the shape is very hard to see with apic taken from the top...a cross-section would be the best However, here is a sketch of what I saw with my very own eyes, when I swapped my CX-7 turbo for the MS6 turbo

This is very useful info, torquemaniac.

For my upgraded K04, which happens to be a 582-series after all, it looks like the turbo guys knew about this, and ported the turbine-side inducer:

[phate]

A bit more info on this stuff for you guys.

The K04-881 has a compressor inducer of ~45mm, and a turbine exducer of ~48mm.
The K04-582 has a compressor inducer of ~42mm, and an exhaust exducer of ~45mm.

Like torquemaniac said, the K04-582 has a much smaller A/R on the exhaust housing. It's really noticeable, probably only ~75% of the size of the K04-881.

Edit for pics:






The length of the taper inside the inlets is noticeably different. That led me to actually measuring them.

[BAT-man]

Well, @phate;, you literally just answered the entire thread and cleared things up.

Looks like i'm lucky that the guy who provided me with a 582 series did a nice port job on the turbine housing. The compressor stuff doesn't apply as the whole housing got milled out for the bigger wheel.

@torquemaniac; it's funny that you linked to that thread, as they end up linking back to my thread as well =] That thread never quite went anywhere though, which is why I created this one to begin with.

Thank you to everyone who contributed. Looks like we're done, but as always, any additional information is always welcome.

[SarcasticOne]

minor thread bump...
but, i've got a 881 and 882 sitting here
881 is my old smoker, 882 from a gen 2

any measurements people wanted of the different turbos? or doesnt really matter?

[BAT-man]

We are currently under the impression that 881 pretty much = 882. We can of course be way off. If you have time to measure the inducers/exducers, it certainly couldn't hurt, but don't worry bout it if it's too much of a pain.

[zenit]

Follow up info----

Weight of Compressor Wheel
882 - 1.3 oz Pic
582 - 1.3 oz Pic

Weight of Turbine Wheel
882- 4.9oz Pic
582- 5.1oz Pic

Compressor Wheel Specs
882 - 60mm/45mm , 6 + 6 blade
582 -60mm/42mm , 6 + 6 blade

Turbine wheel specs Pic
882 - 50mm/44.5mm , 12 blade no base
582 - 50mm/44.5mm , 12 blade with base

What is this?

CHRA
As far as I can see, the CHRA's are the same between the turbo's (you should be able to swap). As noted previous, the housings are different.


You know, if someone has a smoking 882 and you can find a good 582, swapping the compressor housing and wheel might be a solution.
Then again, MS K04's are cheap

[BAT-man]

Great info @zenit, thanks for the follow up. And that 9 blade turbine wheel IS an oddball, I am really curious how well it fits into the 582/882 housings... It could be an alternative to clipping the oem turbine wheel... or you could clip this one as well, for less heat in the exhaust housing...

[zenit]

Originally Posted by BAT-man Great info @zenit And that 9 blade turbine wheel IS an oddball, I am really curious how well it fits into the 582/882 housings... It could be an alternative to clipping the oem turbine wheel... or you could clip this one as well, for less heat in the exhaust housing...

More on that, as soon as I move this franken K04 off my workbench and in my car.

[zenit]

Originally Posted by zenit More on that, as soon as I move this franken K04 off my workbench and in my car.

Cross-posting

Super-Cheater K04

[BAT-man]

Im so jelly! I am doing the hybrid swap-in this weekend hopefully... I wish I knew about the 9 blade turbine wheel when I bought the hybrid from Turbolab... like 2 years ago lol.

[BAT-man]

UPDATE:
As a quick aside - Reconfirming all of the above 582 vs. 882 size difference statements: Turbolabs sent me the 582 exhaust housing which they "ported" to approximate what they thought an 882 housing would be like. They thought the difference between them was just a smaller inducer opening. This is wrong, as Clint stated above.
Very unscientifically, I put a Mazda keyfob into their ported 582 ex. housing and my stock 882 ex. housing. The difference was visually staggering - 882 had about a quarter inch larger inducer opening, and a good 2-3mm larger A/R. This is compared to the PORTED 582 ex. housing. I had to re-use my old housing, which means the core charges should have been less.

When I was ordering the hybrid turbo from them, they assured me that a 582 was negligibly different from an 882 and they fixed those differences. Buyer beware and double check all your specs. They are no longer on FB, but I have all messages saved on my end (annoying that their responses cannot be seen even after they leave fb). They can be found here, though: http://turbolabofamerica.com/

582: sideways radius - the keyfob fit maybe 2/3 of its length down

882: sideways radius - keyfob sinks all the way down and is covered by the inlet opening by about 4mm:


582: lengthwise radius - keyfob stick out by 4-5mm:

882:lengthwise radius - keyfob sinks fully covered by about 2mm of the inlet opening:

[Pu Manchu]

i've seen a lot of shit on msf, but that's definitely a set of pics i never expected to see