Quote:
Originally Posted by marconi118
strange thet mitsu designed such a crap turbo, normally they are doing well
why TD isn't installing a bigger exhaust turbine wheel? Only bend the OEM fins?
Really hope the spooling time won't be increased by the mod... pulling hard from 1500rpm till 7K would be insane  |
You're right, only the compressor wheel has been enlarged and not the exhaust turbine wheel. The exhaust turbine hasn't been enlarged because it's really hard to get a bigger exhaust wheel into the housing for a few reasons. Firstly the size of the shaft, journal bearings and thrust bearings would all be different so as well as sourcing a new shaft you would need to find something that has the same outside-diameter journal bearings. This would be like searching for a needle in a hay stack. The second would be trying to re-profile the turbine housing would be very difficult especially for a one off. It would be possible in batches but then you come back to the first problem of finding the right size parts!
And just to clarify one point - the OEM blades aren't "bent" - Turbo Dynamics use a cylindrical grinder to remove literally a very tiny slice of material