EFR but not EFR
 

So i have been collecting parts for my jeep turbo project and i came across this Borg Warner cobalt ss turbo off an 08 cobalt. At first i was like OMG this is an EFR turbo but the comp wheel is not billet and its not ceramic bearing. The housings make it look like its an EFR but after researching for days just to get the little info there is about it out there it turns out its a Borg Warner LNF turbo. Some places call it a Ko4 as in the audi turbo but who knows.:giggle:

I added the 2.5" V-band on the turbo inlet as no one make a flange for it but they make the outlet flange.

Here are the pics tell me what you guys think!!!!!!!!!

https://fbcdn-sphotos-a.akamaihd.net...87226538_n.jpg
https://fbcdn-sphotos-a.akamaihd.net...89735100_n.jpg
https://fbcdn-sphotos-a.akamaihd.net...46163689_n.jpg
https://fbcdn-sphotos-a.akamaihd.net...68156333_n.jpg
https://fbcdn-sphotos-a.akamaihd.net...50566925_n.jpg
https://fbcdn-sphotos-a.akamaihd.net...03072542_n.jpg
https://fbcdn-sphotos-a.akamaihd.net...60449390_n.jpg
https://fbcdn-sphotos-a.akamaihd.net...99410087_n.jpg

looks like it should spool fast. I'd definitely give it a shot, looks promising. Those cobalts run stupid high boost on these turbos and make 300ish with bolt ons.

on another note, everyone is raving about the efr and yet not a single friggen person has posted boost plots.

I posted spool data in the spool thread silly, it was only to like 10 psi though. I bet soviet will post up a nice once with my old setup to like 20 psi pretty soon.

hmm must have missed it. just saw your post in that thread. looking good.

hmm if this was the same one in the borg warner book, I want one.
Its compressor map looked like a nice one.

I cam across that turbo when I wasbtrying to find some datat on the efr a couple days ago. There was a company offering turbo upgrade kits for the Cobalt. When they took a picture of both turbos next to each other, I did a double take.

yah nig just have some fun fabbing up a manifold to fit that funky twin scroll turbine inlet.



paging artech????


Abe now is the time of tears

300HP in my 4 banger jeep would be sick but im only shooting to run 5-10psi.

Thats why i welded a v band manifold on the inlet.