air questions

[DeepRoots]

whats the cfm of the 7.3?
what about @ 15psi boost?

the wheels are turning.

 

[Agnem]

I've been asking myself the same question, probably because your looking for an intercooler too.

I've been looking for 700 to 900 CFM units. I think they are in our range.

 

[DeepRoots]

only difference is I have no plan to use an air to air intercooler

 

[towcat]

find out what the ATS and the Hypermax IC's are rated for and that should be a good starting point for the guesswork

 

[suv7734]

The basic calculation is:

CFM = RPM x CID x Volumetric Efficency
_______________3456

The volumetric efficiency is generally considered as follows for 4 cycle diesel engines:

Normally Aspirated = .85
Turbocharged = 1.6
Turbocharged and Aftercooled = 1.85




Now I need to get out the vacuum to clean up the dust after pulling that book out

 

[RLDSL]

only difference is I have no plan to use an air to air intercooler

You wouldn't be thinking liquid aftercooler by any chance
Always wondered why I haven't seen those anymore. They worked great on the old Cats.

-------Robert

 

[Agnem]

The basic calculation is:

CFM = RPM x CID x Volumetric Efficency
_______________3456

The volumetric efficiency is generally considered as follows for 4 cycle diesel engines:

Normally Aspirated = .85
Turbocharged = 1.6
Turbocharged and Aftercooled = 1.85




Now I need to get out the vacuum to clean up the dust after pulling that book out

Nice forumula! According to that, the biggest you would need is around 750 CFM.

 

[Pino2234]

My cousin is looking to get an intercooler for his banks turboed 7.3. However the only place i found that offered one was hypermax. Where else would I be able to get one?

In that calculation you displayed what is CFM and CID.

 

[suv7734]

In that calculation you displayed what is CFM and CID.

CFM=cubic feet per minute (volume of air)

CID=cubic inch displacement (engine size)

 

[Whit]

the max effecience an air to air exchanger can ever do is 85%

a water to air exchanger however can do 100 %

 

[motrack]

while water to air may achive 100% efficiently ambient air temps are always lower than engine coolent temps.

 

[Ironman03R]

while water to air may achive 100% efficiently ambient air temps are always lower than engine coolent temps.

Thats true, but a good air to water intercooler uses its own seperate cooling system most times filled with ice water, so charge air passes through a 32* cooler before it makes it to the engine.

 

[motrack]

no ice water chilled intercoolers are used out here in the real world.......

I have yet to see a OEM truck or equipment engine with one installed.

 

[Whit]

I run a temp senser in my air horn just b4 combustion so I can effectivly adjust my ram air............I can tell you that when the charge air reaches 130* this is when my EGT's become boderline at 1300*f........its all downhill from there

OH I might add that the air to air cooler is very effecient up to about 120*f and the only time I can get past that is under heavy load and mountain passes at 8-9k elevations