Turbo Design Question

[Jim Fulmer]

Ok here is the question, If you look at the intake of a turbo(35/40... . whatever) there is the outside ring(where the hose connects) then the inside ring at the inlet, if you cut slits between the two so you actually change the intake area will this benefit these small turbos, Yes I have seen this done on a 91mm last year, it was said that it fools the turbo into thinking it is bigger than it is, the guy that had this ran in NMRA ford series and was D/Q ed for it, Just wondering.



Jim

 

[Don M]

Jim,



Shhhh! yes the mod was DQed. I called the guy to find out what he did. It does work I was waiting for someone to try it.

Those little pony cars are toooo cool.



I have a few compressor housings laying around. In his application he told me he thought he picked up over 100HP. It aint gonna give us that, but hey... whos gonna try it first?



Don~



what issue was that in? I cant find it now.

 

[CRWilliams]

VERY INTERESTING!!!!!!!!. I am new to diesels and turbos alike. I have learned a wealth of information from this site already. Man I wish I had a spare compressor housing, I would try it in a heartbeat, I am always up for some experimenting.

 

[Lil' Dog]

There is a reason for the inlet shape!

Oh boy... The turbocharger inlet is shaped to allow the most lamilar or even flow into the compressor wheel. If you start to introduce unstable air to unit and may or may not "improve" its performance, and I would bet NOT...



You think these things are made in a garage somewhere?? There is some engineering behind the design or they would just give you a clay compressor housing to make it whatever shape you wanted.



There was a good paper at the Gas Machinery Conference in Austin TX this year on how a trim of 0. 025" off of the turbine nozzle ring made a turbo loose significant performance and pretty much useless. They modelled the unit on AnSys I think and it plotted how the exhaust jet was altered as it struck the turbine blades. Really good paper.



J-eh

 

[Big_DQ]

OH SURE, take all the fun out of cutting up a perfectly good turbo