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Engine Specific Info and Questions => IDI Engine => Topic started by: optiks on July 19, 2004, 09:20:45 pm

Title: T3 turbo on 1,9 TD
Post by: optiks on July 19, 2004, 09:20:45 pm

hey guys i have a T3 turbo from an 85 300zx, the AR is .63 and the trim is 60
here is a pic of it
(http://www.mielecmotorsports.com/garagesale/images/hybridturbo3.jpg)
here is the compressor map
(http://www.turbocalculator.com/compressor-maps/t3-60.jpg)

im just wondering what the stock manifold on my 1,9TD looks like. And if the motor will actually spool it ??, My mods include the pump mods and a MBC and an mx6 intercooler


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Title: T3 turbo on 1,9 TD
Post by: TDIMeister on July 20, 2004, 12:38:02 pm

On your 1.9TD operating at redline and 19 PSI of boost (PR=2.3) the turbo's operating point would be a dot right almost at the surge limit.  IOW, it's not a good match.

Edit: to illustrate what I mean, try this (http://not2fast.wryday.com/turbo/glossary/turbo_calc.shtml?FeetASL=0&Tamb=21&Bore=79.5&Stroke=95.5&nCyl=4&RPM=4500&VE=75&Boost=19&Ec=70&Eic=75&PdropIC=1&TambIC=21&wiPercentMethanol=50&wiRate=100&wiTemp=21&SFC=0.49&AFR=13.3&maxInjectorDutyCycle=85) and plot the mass flow (4)[/i] to the PR (2.3) on the map you have shown above.

OK, so it's not right ON the surge line, but it's darn close.  Plus, I have assumed that you will be installing an intercooler with 75% efficiency.  If not, the airflow is going to be even less.

Title: T3 turbo on 1,9 TD
Post by: optiks on July 20, 2004, 02:47:55 pm

i have a mx6 intercooler installed, so this turbo is not the right match for my car