Holset sizing info!

[turbovanman²]

H1c's were never made with a wheel that flowed nearly that much. Unless it's custom or a transplant, don't expect 65lbs. a minute. Here are the measurements of different compressor wheels made for a comparison...

(first number is inducer, then exducer in inches)


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



So unless you are running an Hx-40 wheel in your H1c compressor housing (not possible), then you are closer to about 50lbs. a minute.

[Millerman340]

I'll take that 50lb-min with a spool like a stock snail ,I don't see the hybrid doing that.

[t3rse]

there are plenty of 8v 2.3 ford guys making over 500 whp on these things...and their heads aren't that much better than ours so thats all I need to know...

[MOPAR2YA]

The H1C and th HX are nearely identical compressors, but heres flow on 3 of them.
HX35 60.8 lb/min
HX40 70.10 lb/min
HX 50-55 99 lb/min

[moparzrule]

So unless you are running an Hx-40 wheel in your H1c compressor housing (not possible), then you are closer to about 50lbs. a minute.

HX40/HX35 is a popular hybrid turbo. I've seen the stock housing machined out for the 40 wheel tons of times.
Holsets have a much more aggressive pitch on the blades, comparing the inducer/exducer to a garrett's is not a apples to apples comparison.

Like MOPAR2ya said the HX35 flows 60 PPM, but with a smaller wheel than our 50 trim T04E which flows 47 PPM. Holset's are better than garrett's hands down, they are built stronger too with the exception of the old HX40 with the small shaft. The new HX40's are fine though, my bro runs one in his 500 RWHP cummins.