Let's talk Intercoolers....
09-28-2008 | 11:55 AM
#35
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From: Pattonville, Texas
Yes, 3rd Gen CR CAC design (not early '05 plastic endtanked version).
2-3psi drop across it with stock Holset as reported by aftermarket CAC manufacturer's rep last year; also supported by empirical measurement of boost pressure in pre-CAC duct and intake horn.
Best benefit of a quality aftermarket CAC over a CR version is increased heat exchanging capability - flow improvement is secondary.
2-3psi drop across it with stock Holset as reported by aftermarket CAC manufacturer's rep last year; also supported by empirical measurement of boost pressure in pre-CAC duct and intake horn.
Best benefit of a quality aftermarket CAC over a CR version is increased heat exchanging capability - flow improvement is secondary.
09-28-2008 | 11:56 AM
#36
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From: Pattonville, Texas
EGT = Exhaust Gas Temperature
With all those gauges, surely one of them is EGT? 
09-28-2008 | 01:49 PM
#37
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From: Hawaii Big Island
Only a concern for those with plastic Tanks, for what ever reason one of the Engineers @ Dodge Got a Wild hair and said hey why don't we try plastic on the intercoolers for our 05- Dodge, well needless to say this engineer should be beaten like a Red headed Step child for this idea.
09-28-2008 | 03:24 PM
#38
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From: Motown
Are you sure that's accurate? I've got data stating it's much worse. Pulling Baker grade with boost pressure at the turbo (42psi) the CAC dropped temps from 425 to 127 for a 105 ambient temp. The pressure ratio across the CAC was 1.6 .
09-28-2008 | 04:02 PM
#39
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From: Pattonville, Texas
Yes, based on direct observation.
Your reported CAC delta temp is similiar to our measured data, especially in light of the heat-soak from Baker.
What were your boost pressures on either side of the CAC?
Your reported CAC delta temp is similiar to our measured data, especially in light of the heat-soak from Baker.
What were your boost pressures on either side of the CAC?
09-28-2008 | 04:14 PM
#40
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From: Austin, TX
I had a Banks intercooler and I now have the HTT, there is no comparison in quality to the HTT, but I can't say it cools the air charge any more than the Banks did. I'd say HTT all the way based on build quality. I've spoke w/ the guys at HTT and they "say" they developed their IC based on not only volume but air velocity. They had claimed some CACs can be too large, like when a stock turbo is involved; their words not mine.
09-28-2008 | 04:17 PM
#41
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From: Pattonville, Texas
Here's a few comparative specs for those who'd like to know:
......................................OEM......... ..........HTT
Height_______________24.5"__________27.5"
Width_______________27.5"___________30"
Thickness____________2.25"____________3"
Tube Height__________.375"__________.3125"
Fin Height___________.500"___________.375"
Fins/inch_____________5.5_____________5
Tube #_______________27_____________39
I/O I.D.____________2.6875"__________2.375"
Frontal Area_________673 sq"_________825 sq"
Core Volume________1515 sq"________2475sq"
Tube Flow Area_______22 sq"__________36 sq"
I/O Flow Area________5.7 sq"_________4.4 sq"
Of course, save for the inlet/outlet I.D. & area, these are all core specs.
......................................OEM......... ..........HTT
Height_______________24.5"__________27.5"
Width_______________27.5"___________30"
Thickness____________2.25"____________3"
Tube Height__________.375"__________.3125"
Fin Height___________.500"___________.375"
Fins/inch_____________5.5_____________5
Tube #_______________27_____________39
I/O I.D.____________2.6875"__________2.375"
Frontal Area_________673 sq"_________825 sq"
Core Volume________1515 sq"________2475sq"
Tube Flow Area_______22 sq"__________36 sq"
I/O Flow Area________5.7 sq"_________4.4 sq"
Of course, save for the inlet/outlet I.D. & area, these are all core specs.
09-28-2008 | 05:33 PM
#42
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From: Cummins Technical Center, IN
Could be.
One thing to consider is the time factor. If you want to exchange heat from charge air to charge air cooler (and subsequently to the environment), this exchange takes time.
So if you crank up velocity through the CAC, it's possible that you end up exchanging less heat because the charge doesn't spend enough time in the CAC to dump its heat.
So it would appear that CAC design is always a trade-off between max cooling and other factors, like response (high velocity= better spoolup), etc.
JH
One thing to consider is the time factor. If you want to exchange heat from charge air to charge air cooler (and subsequently to the environment), this exchange takes time.
So if you crank up velocity through the CAC, it's possible that you end up exchanging less heat because the charge doesn't spend enough time in the CAC to dump its heat.
So it would appear that CAC design is always a trade-off between max cooling and other factors, like response (high velocity= better spoolup), etc.
JH
09-28-2008 | 08:52 PM
#45
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From: Pattonville, Texas
I agree Justin, since the OEM CAC works so well.
Morpheus - sounds awfully low - any blockage?
Gauge problems?
I don't know of anyone getting such low pressure in the intake horn with that much from the compressor...
Morpheus - sounds awfully low - any blockage?
Gauge problems?
I don't know of anyone getting such low pressure in the intake horn with that much from the compressor...