Category Archives: FrankenTurbo

Posts with a significant portion of the discussion involving FrankenTurbo products

Thermal Coated FrankenTurbo

Back from having thermal coating applied to the FrankenTurbo F21 turbine housing.

Next for these will be reinstalling them, date TBD, to try and determine if any changes can be measured that arise from applying the thermal coating.

FrankenTurbo F21 turbine housing with Thermal Coating applied
FrankenTurbo F21 turbine housing with Thermal Coating applied

 

FrankenTurbo F21 turbine housing with Thermal Coating applied
FrankenTurbo F21 turbine housing with Thermal Coating applied

FrankenTurbo F4H data

The FrankenTurbo F4H turbocharger is no longer offered, but I had it for a while on my S4.  During that time I collected a significant amount of basic performance data on the car.  Recently I have been looking at turbocharger alternatives to the BW K04 and the metric shown below, 2-11 time, is something I have recorded for the candidate turbocharger systems.

Just to see how the F4H stacks up I pulled this data to compare the F4H to one of the top contenders, the TTE550.

FrankenTurbo F4H vs TTE550
FrankenTurbo F4H vs TTE550

The F4H uses a smaller compressor wheel and turbine wheel as compared to the TTE550, so the outcome is not surprising.

Below is the F4H under a range of ambient temperature conditions.

F4H 2-11 time with grouped by Ambient Temperature
F4H 2-11 time with grouped by Ambient Temperature

No surprise that as the ambient temperature increases the 2-11 time grows longer.

FT21 Removal Underway

I made some good progress toward moving on from the FrankenTurbo F21’s to the TTE 550’s.  Engine was removed along with the driver side FT21.  I’m hoping to have the second FT21 removed today so it can be shipped back to FrankenTurbo for some porting of the turbine housing.  (We’re interested in seeing if there is an affect on exhaust side back pressure with porting of the turbine housing).  These will come back for additional flowbench testing in addition to another run on the S4.

FrankenTurbo F21 removed from engine
One FT21 removed

 

In order to recycle my coolant I collect it in the rectangular box (1), transfer it to the plastic jug (2), and then run it through a coffee filter back into a coolant container (3).  Because the filtering process takes a while I have two going at the same time and refill the funnel when I have a break doing other tasks on the car.

Engine coolant reuse

Both turbo’s are out, and now boxed up for shipping back to FrankenTurbo.

Picture of FrankenTurbo F21 Mixed Flow Turbochargers
FrankenTurbo F21 Mixed Flow Turbochargers