Andyinchville1
Veteran Member
Hi All,
I know alot of us like to modify our cars for better performance and / or fuel economy so that got me to thinking about ways to quantitatively evaluate parts rather guessing and rating things subjectively.
With that in mind, and flow benches being super expensive , I though I could "make" a poor man's flow bench and wanted to run things by you all here to see if there is something I am not thinking of (after all flow benches are high $$ for a reason I guess?).
For my first test (and since I already bought it) , I wanted to see how much better an eBay side mount intercooler (about $100 , all aluminum, and slightly bigger (mostly thicker) than the factory intercooler.
My plan was to use my gas powered back pack blower (a Shindaiwa EB 630 blower rated for up to 651 CFM) and run the blower tube into one end of the intercooler .... I hope the blower tube is about the same size as the intercooler and my plan is to duct tape things to make sure air leaks are a minimum at the connections.
Using an inductive tiny tach , I can set the blower to a common RPM to do all the tests with.
One thing I am missing tho is a way to measure backpressure in the blower tube ( I think that would be the best place to put a guage?) .... what do you think I should use as a gauge or way to measure backpressure ? .... Ideally it should have a long sweep to make for accurate and detailed readings .... I'm not sure that an automotive boost gauge is detailed enough .
I suppose it may be important to have a way to accurately measure air temp and humidity too?
Anything else I may be overlooking? .... seems like this is almost too easy so I have a feeling I may be overlooking something.
With the right adapters , I'm guessing mufflers and exhaust pipes / systems could also be tested.
Thanks in advance for any and all help.
Andrew
PS - How many CFM exhaust flow does our TDI engines make a say 2500 RPM ? I guess boost may play into it also?
I know alot of us like to modify our cars for better performance and / or fuel economy so that got me to thinking about ways to quantitatively evaluate parts rather guessing and rating things subjectively.
With that in mind, and flow benches being super expensive , I though I could "make" a poor man's flow bench and wanted to run things by you all here to see if there is something I am not thinking of (after all flow benches are high $$ for a reason I guess?).
For my first test (and since I already bought it) , I wanted to see how much better an eBay side mount intercooler (about $100 , all aluminum, and slightly bigger (mostly thicker) than the factory intercooler.
My plan was to use my gas powered back pack blower (a Shindaiwa EB 630 blower rated for up to 651 CFM) and run the blower tube into one end of the intercooler .... I hope the blower tube is about the same size as the intercooler and my plan is to duct tape things to make sure air leaks are a minimum at the connections.
Using an inductive tiny tach , I can set the blower to a common RPM to do all the tests with.
One thing I am missing tho is a way to measure backpressure in the blower tube ( I think that would be the best place to put a guage?) .... what do you think I should use as a gauge or way to measure backpressure ? .... Ideally it should have a long sweep to make for accurate and detailed readings .... I'm not sure that an automotive boost gauge is detailed enough .
I suppose it may be important to have a way to accurately measure air temp and humidity too?
Anything else I may be overlooking? .... seems like this is almost too easy so I have a feeling I may be overlooking something.
With the right adapters , I'm guessing mufflers and exhaust pipes / systems could also be tested.
Thanks in advance for any and all help.
Andrew
PS - How many CFM exhaust flow does our TDI engines make a say 2500 RPM ? I guess boost may play into it also?