A set of TTE550’s has arrived for evaluation.  The turbochargers came well packed and even included a balance sheet for each turbo, a nice addition for turbo’s that have been rebuilt to upgrade the BorgWarner K04’s to a hybrid using a variant on the RS6 center.

 

Looking them over it dawned on me that the ring that goes around the wastegate canister increases the effective diameter of the canister, and I have encountered problems fitting the TiAL turbo inlets past the BW K04 wastegate canisters.  This could lead to future headaches when I start installing these turbo’s.  The ring can be loosened and rotated, hopefully that will be enough to avoid problems fitting them alongside the inlets

 

I next turned my attention to giving the TTE550 a turn on the flow bench, something I have done with the BorgWarner K03 and K04 products in the past.  First though I’d have to remove the turbine housing studs so I could fit the turbine housing flush to the flow bench.

 

I’ll just twist this first stud out, or maybe not.  Vice grips, nope.  Penetrant oil & heat, nope.  F*******ck.  Not coming out.  Looks like I’ll be making a trip to a machine shop to have the studs removed.

 

Until that takes place I won’t be making any progress with further evaluating these TTE550 turbocharger’s.

To be continued…