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What size is this turbo?

T

tweeder

New member
AiResearch t04 a/r .60 is whats on the cold side, don't see anything on the hot. Looking to add it to the supercharger to take over when the sc runs out of steam.
 


you would need more information then that. the info for the hot side should be stamped on the exit flange face of the housing. you can pull the compressor cover and measure the inducer and exducer size of the compressor wheel if you want to know how big it is. they use the t04e compressor cover(what you have) on turbos all the way from 58mm to 67mm is the biggest i have seen. after that they jump up to t04S covers. which are .70a/r and 4 inch in and 2.5 inch out.

inducer size is the diameter of the wheel on the inlet side and exducer size is the diameter of the wheel at its back. if you measure the size of the inducer that is generally what people refer to when they are talking about turbo size. ie 61mm,67mm etc. trim or (Exducer^2/inducer^2)*100 is also an important measurement but is generally only useful when talking about turbine size.

since generally most people run 70+mm when they twin charge. its probably a pretty good guess that it is too small for a twin setup.
 
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Ok i'll have to measure when i get home. But in the meantime looking on ebay at 70mm turbos, is there a certain size exducer that would be better?
 
there isnt a certain size exducer. most run 76 trim or by turbonetics standards p-trim wheels. on a grand prix either .68a/r or .85a/r
 




ok got'er torn down and here's the measurements.
intake exducer 69.85mm, inducer 48mm
exhaust exducer 51.5mm inducer 72.7mm

the intake says a/r .60 and the exhaust says a/r .58
 
Also just a side note, gennerally twin charging (SC and Turbo) is a cool thing but not a very efficient thing. While the S/C does "Run out of steam" per say, it really comes down to we can't spin it any faster efficiently. This is why people switch to turbos. Now, twincharging is cool don't get me wrong; however, its very inefficient. The blower becomes a restriction for the turbo, it cant spin fast enough to force the air into to motor. You would have a hella fast spool, good mid, no upper. Several guys have tried it and enjoyed it for the cool factor, but for numbers Turbo is where its at. Now its your car. Do it if you want, and take lots of pictures lol
 


The blower isn't a restriction as far as air flow is concerned. The extra heat it causes, is where the problem lies.
 
GTPpower said:
The blower isn't a restriction as far as air flow is concerned. The extra heat it causes, is where the problem lies.
Click to expand...

Its actually nust the extra weight. Thermodynamics wise the blower is turned off when the pressure ratio above and below it is is 0:0.
 
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