My arm has been twisted!
08-29-2008, 02:11 PM
#37
Little update. I've finally gotten the exact specs on my turbos. Took some doing, but I finally got to the guy who built the turbos 
Here they are:
Garrett Stage III 60-1s
Compressor specs:
60-1 Wheel:
Inducer = 59.1mm
Exducer = 76.1mm
60 trim (yeah yeah I like math)
T04E compressor housing
Flow = 62 lb/min
Turbine Specs:
Stage III T3 wheel
Minor = 56 mm
Major = 65.5 mm
73 Trim
Currently using a .48 A/R, but can upgrade to a .63 or .82 if these don't work well.
I can also upgrade to a stage 5 turbine wheel but he said it wouldn't do anything but worsen the spool.
These a ball bearing units as I recall (forgot to ask him).
Here's the compressor map (now that I finally know the wheel! lol)
This puts me right at 800hp at 15psi and max efficiency. Alternately, I can hit 900hp in the next best range at 15psi, and can run in that range up to 18psi. (Remember I have 2 of these! hehe)
End result, I don't have to worry about choking the compressors. I may have to manage the exhaust pressure by switching housings around, and may choke the .48 exhaust housing but the turbo builder didn't think so, even on the 427.
Pretty nicely built out units.
Oh yeah, and if I get nuts, I can conceivably turn these up to 22psi and 1000+.
Here they are:
Garrett Stage III 60-1s
Compressor specs:
60-1 Wheel:
Inducer = 59.1mm
Exducer = 76.1mm
60 trim (yeah yeah I like math
)T04E compressor housing
Flow = 62 lb/min
Turbine Specs:
Stage III T3 wheel
Minor = 56 mm
Major = 65.5 mm
73 Trim
Currently using a .48 A/R, but can upgrade to a .63 or .82 if these don't work well.
I can also upgrade to a stage 5 turbine wheel but he said it wouldn't do anything but worsen the spool.
These a ball bearing units as I recall (forgot to ask him).
Here's the compressor map (now that I finally know the wheel! lol)
This puts me right at 800hp at 15psi and max efficiency. Alternately, I can hit 900hp in the next best range at 15psi, and can run in that range up to 18psi. (Remember I have 2 of these! hehe)
End result, I don't have to worry about choking the compressors. I may have to manage the exhaust pressure by switching housings around, and may choke the .48 exhaust housing but the turbo builder didn't think so, even on the 427.
Pretty nicely built out units.
Oh yeah, and if I get nuts, I can conceivably turn these up to 22psi and 1000+.
Last edited by TurboBerserker; 08-29-2008 at 02:25 PM.
08-29-2008, 03:38 PM
#38
Looks good erik, I talked to Rex yesterday and he was telling me how much you like math and numbers!
Made my head hurt just thinking about it! Turbo's look good, I think the .48 will work well, lots of people have had success with them...then again they were running 408's not 427's!
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