Please Identify K27 Turbo

[copbait73]

Last spring I bought a 3.0L Turbo motor project.
The engine looks to be stock except for RoW exhaust and a newer configuration K-27 turbo having modern 3K rotor.
I ran the P/N by our own RarlyL8/Brian and he could not cross it.
The P/N: is 5327-999-0493.
A Google search had one hit identifying it as used on the 935 race car (in pairs).
Maybe that explains the "999" mid P/N designation.
Does anyone have knowledge of this being used on a 3.0L or 3.3L Turbo motor? If so, how does it compare with established K-27 configurations?

[Turboo934]

It would help if you posted pictures, of the ID plate and turbo.

[totle]

Found picture of 935 turbos with same part#

[RarlyL8]

Where did you find that info Trond? I cannot find the "999" part number anywhere. My listing for 935 turbos does not include that number.
Any details?

[copbait73]

Originally Posted by totle

Found picture of 935 turbos with same part#

This shot came from the website I found stating these are 935 turbos.

1 STUCK - Items of special interest

My turbo was in the orientation shown in the picture, turbo on the right.
The compressor impeller also has fine impact abrasion also typical of turbos run on racing installations.

Disassembling the end housings it's very obvious (from the as received orientation) this turbo was never actually run on the motor I received so I'm back to investigating it's suitability.

Compressor inlet is 52.5MM and turbine exducer is 64MM placing each in the ballpark however I'm not sure of the turbine area. The casting is marked 1.6. Placing this turbo in the 80s timeframe the housing may have been stated in area or A/R. If in area it would be OK. If in A/R this is a very large housing.

Research shows it supported 600-750HP (in pairs) on the 935 and used as a single 300-350HP is the top range for this 930 engine. Its standard K-27 outline so I'll just start with this one and see how it responds.

If unsuitable I'll find something else. Who knows, maybe it was the trick hot-rod set-up for 3.0Ls back in the mid 80s.....or not.

[RarlyL8]

Are these the same housing and dimension as a typical K27? If so then using 2 of them would take up a huge space and add a lot of weight. If they support 350HP in pairs does this mean the one you have is only good for 175HP?? I must be confused because this does not seem a viable solution to reach 350HP.

[copbait73]

Brian-

Thanks for this posting. I went back and clarified my posting.

Basically 300-350HP /turbo.

[proffighter]

Originally Posted by RarlyL8

Where did you find that info Trond? I cannot find the "999" part number anywhere. My listing for 935 turbos does not include that number.
Any details?

I am not sure, have to check, but I am pretty sure my K27 has this "999" too. As far as I know it shows, that it is a reman turbo

[RarlyL8]

That was my first guess, and what I told Marty early on. I've seen a lot of funky numbers that are made up by aftermarket vendors that create hybrid turbos. The numbers listed for Porsche K27 turbos is 720. Mercedes uses 888, no idea who uses 999.

[copbait73]

Originally Posted by RarlyL8

That was my first guess, and what I told Marty early on. I've seen a lot of funky numbers that are made up by aftermarket vendors that create hybrid turbos. The numbers listed for Porsche K27 turbos is 720. Mercedes uses 888, no idea who uses 999.

I'll try to get a shot of the nametag as it looks to be right from the factory. My guess is "999" reflects a prototype and or racing configuration. (Garrett convention is to place an "X" on the P/N).

All the major castings show KKK designation. Nothing out of place with these.

Still would like to pin down the turbine housing area. The turbine housing casing carries P/N 5327-101-8393 (and the area "1.6" cast in the volute and under the P/N).

[copbait73]

Here is a shot of the nametag. I've seen a lot of aftermarket relableling. This one looks right from the factory to me:

[proffighter]

Originally Posted by RarlyL8

...no idea who uses 999.

At least this company, which done my turbo rebuilt uses 999:

E. Klaus AG Fahrzeugtechnik - 9200 Gossau

It's a well-known dealer for KKK, Borg Warner and Garrett here in Switzerland

So nothing about special racing whatever hybrid

PS I will make a pic of mine tomorrow...

[JFairman]

I took your pic to photoshop to try and make it easier to see, but it's extremely low rez and pixelated. It falls apart if enhanced and sharpened anymore.

[proffighter]

Well, I was wrong

Here is my tag:

[copbait73]

1 STUCK - Items of special interest
Shows this K-27 cross referenced to Porsche 930 123 017 00. This is a valid sequence.

I emailed Turbochargers favorable from STK Turbo Technik requesting a cross reference. This site has lots of interesting turbo data. I'll report what they say.

In the meantime I went down and finished stabilizing this unit for storage. I'm also pulling some stings to get a modern Garrett.

[RarlyL8]

Marty,
#959.123.017.00 is the P/N for one of the 1985-01 959/Group B turbos. The other is -18. (K26)
#911.123.015.00 is the P/N for the 1973-09 935 turbo. (EB 33K)
#930.123.015.00 is the P/N for the 1977-10 935 turbo. (K26)

None of those turbos are K27's. What is the numeric family/sequence?

[copbait73]

Originally Posted by RarlyL8

Marty,
#959.123.017.00 is the P/N for one of the 1985-01 959/Group B turbos. The other is -18. (K26)
#911.123.015.00 is the P/N for the 1973-09 935 turbo. (EB 33K)
#930.123.015.00 is the P/N for the 1977-10 935 turbo. (K26)

None of those turbos are K27's. What is the numeric family/sequence?

My reference was to 930.123.017.00 on link 1 STUCK - Items of special interest
Did you go there?

[Helmsy]

Still could be a reman turbo.

Also check turbo-product for a reference for original turbo numbers.

[lucittm]

You may know this already, and if so don't shoot the messenger. The picture of the turbo nameplate that copbait posted does not have a part number. This is probably because it was an aftermarket item built for replacement. Here are the lines from top to bottom with the data from my 1991 965:

KUND NR = Customer (Part) Number – 930.123.013.04
GRÖSSE = Size – K27-3072GD11.11
ATL (Abgasturbolader) NR = Exhaust-Driven Turbocharger Number – 90 051 2724
AUSF (Ausführung) NR = Version Number – 5327 970 7200

I think the first part of the ATL NR is the year - in this case 1990.

I hope this helps,
Mark

[voitureltd]

Originally Posted by copbait73

Last spring I bought a 3.0L Turbo motor project.
The engine looks to be stock except for RoW exhaust and a newer configuration K-27 turbo having modern 3K rotor.
I ran the P/N by our own RarlyL8/Brian and he could not cross it.
The P/N: is 5327-999-0493.
A Google search had one hit identifying it as used on the 935 race car (in pairs).
Maybe that explains the "999" mid P/N designation.
Does anyone have knowledge of this being used on a 3.0L or 3.3L Turbo motor? If so, how does it compare with established K-27 configurations?

Well here is another one from my 1979 turbo Alan Johnson upgraded in 1984 according to the records with that same number 5327 999 0493. recent oil scavenger failure resulted in turbo failure so soon off for rebuild. Also has some nicks on the turbine blades. Would be nice to know what it originally was designed for. Comments welcome