mrich0908

Any one ever measure the turbine to their 7875? Im coming up with 75/82 ruffly . My compressor checks out. I bought mine off ebay search (T78 7875C T4 .96 A/R Exhaust .75 A/R) and one will come up . So before I send this back I thought I would ask other members if they bothered to measure theirs.
Before it is asked Im measuring it properly with a brown and sharpe mechanical dial caliper that was recently was inspected and certified by the company I work for .
My exhaust turbine housing , where it meets the turbine wheel only measure ruffly 83mm so it cant measure 85mm.
If any one could put a pair of calipers to their 7875 turbine wheel or has already done so , it would be great .
Thanks

mrich0908

Odd Huron Speed list their turbine as 82/75.

Superman09

iTrader: (65)

Most 75mm turbine wheels on the market are a 82mm inducer and 75mm exducer for the standard T4's
-Precision, Turbonetics, Comp, VS-Racing, On3, HS

What numbers were you expecting to see when measuring?

For the name "7875" this would indicate typically 78mm measurement for the inducer on the compressor wheel and 75mm measurement for the exducer on the turbine wheel

mrich0908

75/85mm was what I was lead to the turbine wheel exducer and inducer. to be . After some digging around more when seeing your numbers I seen the turbine is the same measurements as the Garrett gt42 wheel 75/82mm. The same wheel size most shops have. Im not sure why but multiple " oversea" sellers list the turbine wheel @ 75/85 . I know this is wrong now and they just dont know or their factory gave them the wrong info, you would think some one would measure it one before selling them. Everything spec'd out properly , just a case of misinformation . Im aware what the parts product numbers in its name indicate on most turbos, thank you for taking the time to explain it though.
I would list the ebay listing for you but I dont know if its aloud . You can always search 7875C one will pop up.
While I have your attention do you happen to sell replacement chra if I ever need one?

truckdoug

iTrader: (25)

the chras vary from supplier to supplier. for instance, an on3 chra will not fit VSR compressor or turbine housings. and of course the billet wheel compressors have a different radius on the inducer

mrich0908

Got ya didnt know that I assumed they all used the same dimensions.