Testing our Cold Air Intake! First numbers of the testing yesterday night :)
09-21-03, 08:41 PM
#26
Originally posted by cloead
nice, do some t2 tests
nice, do some t2 tests
The only reason we don't have a TII intake is because there are only three TII's here. On in mexico one that MAX owns but it dead and missing ****(ECU AFM etc) and another I have only heard of.
09-21-03, 10:03 PM
#29
Well really anyone that will lend us their car lol can get the intake for free but we would need it for several days and not many of you all live close to us. We just need to take some time to make sure it fits good on the TII.
Santiago
09-21-03, 11:26 PM
#30
Ok guys I made a graph earlier today and we got it uploaded to the website so you all can see a bit clearer what the temps were like.
All you guys need to do is used the drop down menu and go to "Performance Data" and it will be on there. It also has a little legend I made up because certain values were not at SPEED but certain situations.
Santiago
PS- You all please read throughly and all of the captions and text on the site. Some pictures NEED those captions as the are not what the final product will look like or it is part of the explenation and very importand.
WWW.Aztechrotary.cjb.com
All you guys need to do is used the drop down menu and go to "Performance Data" and it will be on there. It also has a little legend I made up because certain values were not at SPEED but certain situations.
Santiago
PS- You all please read throughly and all of the captions and text on the site. Some pictures NEED those captions as the are not what the final product will look like or it is part of the explenation and very importand.
WWW.Aztechrotary.cjb.com
09-21-03, 11:38 PM
#31
Wait................What?
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09-21-03, 11:46 PM
#33
Wait................What?
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09-22-03, 12:35 AM
#39
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I just measured the area of my stock intake "water box" in front of the radiator. 1 5/8 by 5 or 1.625 x 5 = 8.125.
The 3 inch pipe is A=r x r x pi A= 1.5 x 1.5 x 3.14 = 7.065
An inch (1.06) less flow area.
Temp less? Less air?
Waiting for Stock and Cone no cold box temps.
Interesting test. Great to have someone actually do some measurements.
The 3 inch pipe is A=r x r x pi A= 1.5 x 1.5 x 3.14 = 7.065
An inch (1.06) less flow area.
Temp less? Less air?
Waiting for Stock and Cone no cold box temps.
Interesting test. Great to have someone actually do some measurements.
09-22-03, 12:40 AM
#40
Originally posted by downwinddave
I just measured the area of my stock intake "water box" in front of the radiator. 1 5/8 by 5 or 1.625 x 5 = 8.125.
The 3 inch pipe is A=r x r x pi A= 1.5 x 1.5 x 3.14 = 7.065
An inch (1.06) less flow area.
Temp less? Less air?
Waiting for Stock and Cone no cold box temps.
Interesting test. Great to have someone actually do some measurements.
I just measured the area of my stock intake "water box" in front of the radiator. 1 5/8 by 5 or 1.625 x 5 = 8.125.
The 3 inch pipe is A=r x r x pi A= 1.5 x 1.5 x 3.14 = 7.065
An inch (1.06) less flow area.
Temp less? Less air?
Waiting for Stock and Cone no cold box temps.
Interesting test. Great to have someone actually do some measurements.
If by all that data you mean to say that the 3" pipe can not flow as much as the stock box your forgeting the limitation is the AFM itself. I have already don the calculations and the pipe WILL out flow the AFM.
Those tests will come later this week.
Santiago
09-22-03, 12:59 AM
#41
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Originally posted by 1987RX7guy
Unfortunately to dyno test it I would have to travel about 150 miles to another city. The whole thing would probably cost US around 500 dollars for some good runs with all the setups. Sadly I do not have that kind of money.
Just remember: That I know of no intake maker has dynographs. If I can get some of our customers to send me their dyno charts I will gladly post them.
Unfortunately to dyno test it I would have to travel about 150 miles to another city. The whole thing would probably cost US around 500 dollars for some good runs with all the setups. Sadly I do not have that kind of money.
Just remember: That I know of no intake maker has dynographs.
If I can get some of our customers to send me their dyno charts I will gladly post them.
Do the acceleration testing like I said before. 0-60mph, average of six runs, three in each direction to cancel gradient and wind. Change intake and repeat. Yes it's time consuming, but anything else is not accurate enough to use as proof that your product works.
If you want people to pay money, you have to ensure they aren't buying a dud.
09-22-03, 01:12 AM
#42
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Originally posted by downwinddave
I just measured the area of my stock intake "water box" in front of the radiator. 1 5/8 by 5 or 1.625 x 5 = 8.125.
I just measured the area of my stock intake "water box" in front of the radiator. 1 5/8 by 5 or 1.625 x 5 = 8.125.
That's ~7% bigger than the 3" pipe, but a flat oval like that has a greater surface area than a circle of equal area, so it won't flow quite as well as the area measurement might indicate.
Also, one of the major restrictions has been removed. The airbox itself (NOT the filter) causes a lot of the intake system's restriction. So even if the stock duct flows the same, it's still an improvement.
BTW, I'm assuming those are the inside dimensions. If they're the outside dimensions they're no good, since the wall thickness will reduce the area.
If the pressure drop through the intake were measured using a water manometer (very easy to make), then we'd really know how good it is.
Last edited by NZConvertible; 09-22-03 at 01:15 AM.
09-22-03, 02:02 AM
#43
Originally posted by NZConvertible
That duct is an oval, not a rectangle. You can't just multiply the width and height, you have to account for the rounded ends. The correct area using your mesurements is only 7.55sq.in.
That's ~7% bigger than the 3" pipe, but a flat oval like that has a greater surface area than a circle of equal area, so it won't flow quite as well as the area measurement might indicate.
Also, one of the major restrictions has been removed. The airbox itself (NOT the filter) causes a lot of the intake system's restriction. So even if the stock duct flows the same, it's still an improvement.
BTW, I'm assuming those are the inside dimensions. If they're the outside dimensions they're no good, since the wall thickness will reduce the area.
If the pressure drop through the intake were measured using a water manometer (very easy to make), then we'd really know how good it is.
That duct is an oval, not a rectangle. You can't just multiply the width and height, you have to account for the rounded ends. The correct area using your mesurements is only 7.55sq.in.
That's ~7% bigger than the 3" pipe, but a flat oval like that has a greater surface area than a circle of equal area, so it won't flow quite as well as the area measurement might indicate.
Also, one of the major restrictions has been removed. The airbox itself (NOT the filter) causes a lot of the intake system's restriction. So even if the stock duct flows the same, it's still an improvement.
BTW, I'm assuming those are the inside dimensions. If they're the outside dimensions they're no good, since the wall thickness will reduce the area.
If the pressure drop through the intake were measured using a water manometer (very easy to make), then we'd really know how good it is.
Thanks for that info NZ, I plan to do those tests that you mentioned I just have to find a suitable place to do it that is generally deserted
Also I would think that the intake is not much longer than the stock box with the snorkel attached so pressure drop would not be terrible.
How do you make that manometer?
I will google it but post the info just in case I can't find out.
Santiago
09-22-03, 02:18 AM
#45
Originally posted by neevosh
Do you have any temps from a stock airbox or just an open filter?
Do you have any temps from a stock airbox or just an open filter?
Ok I googled manometer and found some people that sell them(high tech ones) and they are atleast 180 dollars for the cheapo ones lol!.
I found some sites that show you how to make a U-tube manometer. Is this what you ment NZ? How would I be able to use that on the road? the water would spill!
09-22-03, 03:24 AM
#46
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Read this article on testing intakes. It expains how to make and use a water manometer that costs virtually nothing. No spilt water either.
09-23-03, 06:09 AM
#50
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Santaigo,
THe cool air intake looks good. I have been trying to do one for my FD. Try doing comparison 50-90MPH 3rd gear runs. The times should be a lot more consistent than 0-60 MPH. Easier on the drive train also.
Mike
THe cool air intake looks good. I have been trying to do one for my FD. Try doing comparison 50-90MPH 3rd gear runs. The times should be a lot more consistent than 0-60 MPH. Easier on the drive train also.
Mike