Worm Boy

iTrader: (2)

Finally some parts are starting to roll in so Josh began the new build. I will try and keep the pics coming weekly for you to view RC. Please let me know what yall think.









Updated pics from yesterday:

Worm Boy

iTrader: (2)

In tank fuel system:






We also have a Weldon 2345 that will be going on the car as well to make sure we do not run out of fuel pump!

1INSANEGTO

iTrader: (13)

Steven do you have a source you can share on getting the Oval? what size is that?

gi8e7oi825

iTrader: (32)

ditto!

LS1RedZ

iTrader: (19)

I will say it again. I cannot wait to see this car in action!!

JAX04

iTrader: (17)

amazing build, do you happen to have a flow chart for your oval pipe. Ive been curious for a long time about flow characteristics. I know its the cross sectional area that matters. But cant ever seem to find a flow chart for oval pipe. Have them all day for round, just not oval

And you guys are killing me. Making me wanna go live in a box so i can afford to make my car this sick. lol Great work, as always!!!!!!!

RCC

For those who havent seen it elsewhere, we are putting Twin billet 82mm turbos on the car.

1INSANEGTO

iTrader: (13)

Should flow the same. Reason people use oval is for fitment. IE a 5in round take up alot of room vs a 5in oval. http://www.spintechmufflers.com/imag...es%20chart.pdf

Spintech sells everything!!! Up to a 6in Oval.

Tiago

iTrader: (27)

oval pipe flow < round pipe flow in theory.

sleepersilverado

iTrader: (1)

I say don't post any more of RC's car in the Texas section. Just do it in here and maybe all the riffraff will stay away.

JAX04

iTrader: (17)

i was almost 100% positive that round flows better then oval. Kind of the same deal with two smaller pipes not being the same as a larger. ie. two 2" pipes together dont flow as well as one 4" pipe.

RCC

Agreed. If we were using round pipe it would have been built out of 3". Since we are using ovalized pipe we went we up sized to the equivalent of using 3.5" round pipe.

1INSANEGTO

iTrader: (13)

So your saying my method is flawed? Going for 3.5in from each headers and using a single 5in oval.

Pic

JAX04

iTrader: (17)

Im not saying your method is flawed. It would help to know what the flow of the oval pipe is. IE. Pressure drop/friction loss. Since i dont have a chart i cannot tell you. other information to know would be, the velocity in which your exhaust is moving.

But i cant tell you that a 5" pipe that is flowing 100 cfm has a friction loss of .2 and that a 10" pipe flowing 100 cfm has a friction loss of around .05 which is much better. Now i used 5" and 10" at 100 cfm because it was round numbers.

but the same does and will hold true for smaller size pipes. Now, If i had an oval chart, i could figure out what size it would take to be equivalent.

maybe ill try this formula on for size. lol

de = 1.55 (π b2 / 4 + a b - b2)0.625/(π b + 2 a - 2 b)0.25

http://www.engineeringtoolbox.com/eq...ter-d_205.html
Found at bottom of page, last equation.

give me a second, and ill figure this out. lol

JAX04

iTrader: (17)

Now unless i completely botched that formula and the math. Your 5" oval is about the same as a 4.25" diameter Round pipe. Assuming the flow characteristics are similar. Which i have not determined yet.

assuming that 3.25=B and 6=A which is the numbers used from spintechs' drawing. Height and Width.

Im no math wizz, and haven't done a compound math problem in over 10 years. i hope i did it right

Im going to do it again, probably two more times, it was fun. Not having even looked at an equation like that in years. lol

EDIT: Did it again, and did it somewhat differently, i thought i made a previous mistake, and still got 4.247

Tiago

iTrader: (27)

right on, good move. It must keep equal hydraulic radius in order to not affect flow. Its not as simple as equal areas because of friction losses of the fluid against the walls of the tubing as well as friction between the fluid itself, although this maybe negligible in some cases.

JAX04

iTrader: (17)

well said tiago.

higher head pressure would result in a higher reynolds number. And a lower pressure drop would result in a more laminar flow

still trying to find the formula for hydraulic radius of oval tubing

Either way, going from two pipes of a diameter of 3.5" to a single 5" oval will result in a higher pressure at that point and cause a more turbulent flow. Which is not what we want.

Beaflag VonRathburg

iTrader: (176)

That should be insane. I look forward to seeing how the Tr6060 holds up with the power.

1INSANEGTO

iTrader: (13)

What does a 6in cause? I am going to talk to a piping engineer and a compressor engineer I know and see if they can give me some real life data. I will start a new thread with the info.

RS_SS69

iTrader: (31)

Im pretty sure he went th400...not positive.