Turbo Flow Rates

take this with a grain of salt, but i found it to be intresting

Model Compressor Turbine
Holset H1D 1.85 2.165
Holset H1D 1.969 2.165
Holset H1D/E 1.969 2.165
Holset H1D/E 2.047 2.165
Holset H1D/E 2.126 2.165
Holset H1C/E 2.126 2.244
Holset H1C/E 2.283 2.244
Holset H1C/E 2.126 2.362
Holset H1E 2.205 2.362
Holset H1E 2.283 2.362
TS04 2.300 3.304
60-1 2.324 3.000
Holset H1E 2.362 2.559
Holset HX40 2.362 2.559
T-61 2.382 3.544
62-1 2.441 3.000
Holset HX50 2.48 2.835
T-64 2.490 3.670
T-66 2.580 3.584
Holset HX50 2.638 3.031
Holset HX55 2.638 3.031
T-70 2.720 3.850
Holset HX55 2.835 3.031
T-72 2.840 4.030
T-76 3.020 4.030
 
Is there alot of surge with the wheels that close on your HX55? Is it towable?

Holset HX55 2.835 3.031

bnraodn.
 
the surge comes from when yr turbine is smaller then yr compressor there for yr pushing in more than it can get out , I had a T70 with a p trim wheel , was like 2.7/2.5 81 a/r it was laggy and had alot or surge , i had a baby 55 witch was nice 16cm gated housing worked well

the T series posted above is inducer/exducer of the compressor wheel only
 
gunracer1 said:
take this with a grain of salt, but i found it to be intresting

Model Compressor Turbine
Holset HX50 2.48 2.835
Holset HX50 2.638 3.031
Holset HX55 2.638 3.031
Holset HX55 2.835 3.031
Click to expand...

Please excplain, how can HX50 use use same copressor and turbine like HX55.

Whats the difference between: Holset HX50 2.638 3.031 and
Holset HX55 2.638 3.031 ?
 
AsTroSS said:
Please excplain, how can HX50 use use same copressor and turbine like HX55.

Whats the difference between: Holset HX50 2.638 3.031 and
Holset HX55 2.638 3.031 ?
Click to expand...

My guess is the HX50 is older...and might use a different number of blades on the wheels!

Chris
 
I'd like to know why ball bearings are better....... and WHY the ceramic style should be better? I just can't seem to trust bearings made with ...er...clay?:confused:
 
Thanks for the info. I've tuned a 71mm Silverbullet on a Dmax and a modded GT42R on a Dmax also. Both are excellent turbos, no surging, and 100% streetable. We have not fueled up the Silverbullet yet, but the modded GT42R was good for over 700rwhp.
 
"modded GT42R" --

What wheels? What A/R? Internal/external wastegate? What kind of boost does it make at 2k RPM cruising down the road?

:nopics:
brandon.
 
So, any recommendations for someone taking things up just a tad, say maybe going from 180HP to 300-325hp. I currently have the stock turbo with boost elbow raising things up to around 33psi, but have been told to go with a bigger turbo to keep temps down. Any suggestions? Would I benefit any by a 16CM^2 housing?

Thanks,
George
 
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