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compressor wheel vtrim

CEF11E

By CEF11E,
in Engines & Forced Induction

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CEF11E Veteran

CEF11E

Posted
Posted

After reading 1,999 turbo threads and trying to understand flow maps ect i still dont understant turbos very well.

Will a to4E V-trim wheel fit the following turbo as a replacement for yhe 57Trim comp wheel and what would the results be with an RB20. as i already have this turbo and this wheel thats why i am asking.

I am sorry if this is a stupid question i just want better boost response than 4000+ rpm...

Garrett T3/T04E Hybrid 57-Trim

0.50 A/R compressor housing

0.63 A/R turbine housing

57 Trim compressor wheel.

Stage III turbine wheel.

anyone who knows please post your knowlege...

cheers

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discopotato03 Grand Master

discopotato03

Posted
Posted

This could work ok if the turbine housing is the Ford style Garrett one . These were designed for turbines with 65mm O/D unlike the Nissan/Garrett type which suited 59mm OD turbines . Everyone likes to reprofile the latter for the TA34 turbines (like yours) and screws up the nossle section of the housing . Turbine efficiency goes out the door and we wind up with a laggy dog .

Garrett do their own TBO3/TO4E hybrids (T31 and TA34's) which do work , the aftermarket sucks everyone in with their bastard creations which rarely do . Note Garrett uses small trim TO4E wheels to keep the workload down on the turbine to maintain some efficiency .

Remember the golden rule , get the turbine side right FIRST . Its the thing that DRIVES the compressor so if its bodged nothing you can do with the compressor side will fix it .

Cheers A .

discopotato03 Grand Master

discopotato03

Posted
Posted

I forgot to add that the "V" trim is a TO4B wheel ie 2.75" by 2.180" (63 trim) and 8 bladed . Turbonetics list a Super V trim but never seen one . The 6 bladed compressors are the pick of the TO4B's ie the H trim at 2.75" by 2.298" (70 trim) . From memory there was one of similar dimensions to the V trim as well .

Cheers A .

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