What exactly is the difference between a KKK turbocharger and a Garrett ball bearing turbocharger?? I have tried looking online but not much info...
CJV and Wilber seem to have gone with Garrett turbos and now, Evoloution Motorsports offers a level 4 upgrade utilizing some type of Garrett ball bearing turbos.
I saw that the main Garrett models were along the lines of GT25, GT30, T3, T04S...
Which ones are the ones on the new EVO kit??

 

I found what I think is the Garrett homepage - <a href="http://www.egarrett.com/index.jsp" target="_blank">http://www.egarrett.com/index.jsp</a> - looked through it but not much help!!

 

Nice question Msindi, im looking forward to the replies.

 

CJV - what about Garrett models and sizing?? Which ones have you gone through in your different stages??
Which one is EVO using??

 

Additionally, Garretts have more options to size them, many more compressors, turbines, and housings that help fine tune the turbos for a particular application. Additionally, may aftermarket people use Garretts as the basis for their "Hybrid" turbos, Turbonetics, Koklen to name a few. However, there are some some things to be aware of when using them in an oil cooled only application. Garretts are designed to be used with an oil lubricated, water cooled bearing section. They are designed to flow less oil than a KKK because KKK relies on the oil to also cool the bearings. Garretts often times have issues with overoiling and leaking if a larger scavage system is not used which is how Garretts have received a reputation for short lifespan and unreliability. IF properly used, they are great. I believe CJV's Garretts are watercooled GT series turbos where the stock K16/24s are oil only.

 

The ball bearing units also have the ability to maintain higher shaft stability (concentricity) Garrett capitalizes with this and reduces the clearance between the wheels and housings. This is a major benefit. The efficiency increases. However, the spin friction test is more myth than reality. Add your oil into the bearing unit and pressurize it to engine specs, then rotate the shaft! It slows instantly. Don't get me wrong they are good units, we sell alot of them. However, plugging the watercooled bearing housings for our applications will knock the life out of them. And they are not rebuildable! You would have to purchase a new unit. I can post a picture of a T28 unit that failed last week. The lifespan is suspect on these units.

K16/24 have had there teething problems too. However, they are easily to repair and very affordable to freshen up. The basic design of the KKK is of the traditional floating bearing/bushing turbine wheel and bearing housing. If you guys want to see the guts of a K24 vs T28 I'll take some pictures and upload them. Turbo class can begin....

 

lets do that...
Also, I need expert advice on waht I would need to do to put real ball bearing turbos complete with liquid cooling on my car (uh oh - looks like im headed for bankrupcy now).
Also, what model (since you know about Garretts) does EVO use??
Waht would a system of Garretts for a 996TT run me (cost wise)?? Can they be fitted to the existing plumbing on the 996TT (i.e. direct bolt-on) or would I need custom everything??

 

Great questions msindi.