to4e to4s

[shmiddy]

whats the difference between a to4e and a to4s?

[R31Nismoid]

apart from the fact there are many variants of to4e/t04s...

wheels/housings are different, using different bits and pieces

[discopotato03]

T04S was getting into large frame turbos , T3/T04B/T04E all can use same bearing housing and shaft bush bearings/thrust plate . The shaft journal size was mainly 1/4" where T04S is the "big shaft" stuff . T04S compressor covers are quite large and commonly used with GT40 compressors on more modern turbos .