Difference between 90bhp turbo and 110 bhp turbo

[s-e-a-t]

Hi. I wanted to know if there’s any difference between the two turbo’s?…do they look alike?...if fitted a 90bhp turbo onto a 110 model would it make any difference?

 

[GTV]

I belive its the turbo and injectors that are different

 

[Muttley]

The TDI110 has a different type of turbocharger from the TDI90.

The 90 has a wastegate turbo, one which limits boost pressure by diverting exhaust around the turbine once it has reached maximum boost.

The 110 has a VNT turbo, which is sized to take the full exhaust flow at max engine revs. At lower engine speeds, the inlet side of the turbine is narrowed down by aerodynamic vanes which make the smaller volume of exhaust achieve the same flow rate, and so keep the turbine spinning at max boost for longer.

The VNT turbo is more efficient (there is no wastegate and no waste of exhaust energy) and gives more boost over a wider rev range, but is more complex to build and control and so more expensive.

In order to swap turbos, a different set of ECU maps and a different control system would have to be fitted.

The two can be distinguished externally, the vacuum actuator is in a different place. But it isn't very obvious unless you have pictures in front of you or have looked at the two types before.

 

[brad1]

this topic had been covered so many times, a search would have been better

 

[brad1]

Hi. I wanted to know if there’s any difference between the two turbo’s?…do they look alike?...if fitted a 90bhp turbo onto a 110 model would it make any difference?

why would you want to fit the turbo from a 90bhp onto a 110 anyway

 

[s-e-a-t]

Thanks for the info....just had my turbo replaced and wasn't sure if it came form a 90bhp model or 110 model....like Muttley said that the 90bhp turbo has a wastegate turbo...which i'm sure the one i had put on had no wastegate. After having the turbo fitted my car feels really slugish it boost's up fine but takes it time...before form 60mph to 70mph didn't take much time now it feel as if it struggles....any idea's?

 

[jonjay]

Thanks for the info....just had my turbo replaced and wasn't sure if it came form a 90bhp model or 110 model....like Muttley said that the 90bhp turbo has a wastegate turbo...which i'm sure the one i had put on had no wastegate. After having the turbo fitted my car feels really slugish it boost's up fine but takes it time...before form 60mph to 70mph didn't take much time now it feel as if it struggles....any idea's?

Also was the ECU flashed if you had an upgrade of turbo? What fuel are you using?

 

[Muttley]

Okay, had a look at some diagrams and found some pictures.

The Toledo TDI 90 engine is AGR, uses a Garrett GT15 turbo. The turbo wastegate vacuum actuator is fitted behind the turbo, on the side facing the engine block, and works across the turbo, the actuating rod is parallel to the turbo's axis.

http://www.staticxmotorsports.com/garrettgt1544turbocharger-034ar.aspx
http://www.planetsidexside.com/f9/brand-new-garrett-gt15-turbo-1214/


The TDI 110 engine ASV, ALH amongst others, uses a Garrett VNT15 turbo, and the vacuum actuator hangs underneath the turbo, with the rod working at right angles to the turbo axis.

http://www.technologie-entwicklung.de/Gasturbines/VNT15-Turbo/vnt15-turbo.html
http://www.mjmturbos.com/VNT-15.htm

 

[s-e-a-t]

Thanks Muttley for looking up....i'm sure it's the VNT turbo as the vacuum actuator hangs underneath the turbo.....but for some reason it boosts very slowly and holds it's boost at 14psi.....in 5th gear the car really struggles to go form 60 to 70 with my full foot down.....any idea why this might be happing?