Whats up everyone, I will be using a t3/t04e 60ar compressor 63ar turbine 57trim

My piping diameter:

From Turbo to Intercooer--2.00inches
From intercooler to Cold Air intake-2.5inches
Cold Air Intake(Charge pipe)-3.00inches

The story is, I bought a cold air intake on ebay..and wanted to use it as my chargepipe. I was assuming they were gonna send me a 2.5 inch pipe...but turns out..its 3 inches..lol I plan to go ahead and weld my BOV flange and use it as my chargepiping anyways. Any ideas or input on what I plan to do?

Khoi

 

sounds good

 

i think 3" is way too much, 2.5" is fine, ditch the cold air intake

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredoSP &raquo;</TD></TR><TR><TD CLASS="quote">i think 3" is way too much, 2.5" is fine, ditch the cold air intake</TD></TR></TABLE>

LOL...dammit..i just bought it. Why do you think it'll be bad to use it Fred? Besides the fact that their maybe a little loss in pressure.

Khoi

 

TTT

 

Will require lots more spool in the turbo to fill the capacity of the 3inch. Try to sell it off and make a custom..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by synik &raquo;</TD></TR><TR><TD CLASS="quote">Will require lots more spool in the turbo to fill the capacity of the 3inch. Try to sell it off and make a custom..

</TD></TR></TABLE>

The question then..is how much more spool? Lots more doesn't tell me anything except for that fact that there will be some boost lag.

Khoi

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredoSP &raquo;</TD></TR><TR><TD CLASS="quote">i think 3" is way too much, 2.5" is fine, ditch the cold air intake</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by synik &raquo;</TD></TR><TR><TD CLASS="quote">Will require lots more spool in the turbo to fill the capacity of the 3inch. Try to sell it off and make a custom.. </TD></TR></TABLE>


?!?! What's with you guys thinking that 3" is way too much? Back it up with some data or dyno plots or proof or something. Calculate the difference in volume between a 2.5" cai and a 3" cai, assuming it is roughly 24" long. For the mathematically challenged out there, it is about 52 in^3 or 0.03 ft^3. Now look at the flow rate of your turbo...at least 150-300 cfm? Do the math. The added lag will be 0.012 seconds, that's right, twelve thousandths of a second. If you think that is a really big problem then go ahead and change it, however I'm extremely doubtful that you could even tell the difference! [/skooled]

 

WOW...lol

 

what do you run on your car smart ***? Take a poll of what most people have, its going to be 2.5", KISS, no need for 3" unless your building a race car.

As far as your skooled crap goes, give me a place on LI and you'll be skooled, trust me

 

The whole point of Sohc Driver's post was that he already HAS a 3" chargepipe and he wants to know if it will be a problem. Answer---&gt;No. I wouldn't have bothered posting except I see sooooo muuuch bs on H-T where people just parrot something that their uncle's cousin's girlfriend's ex-boyfriend said, without any reasoning or logic or theory or proof to back it up. Probably half the posts on H-T fall into this category. FredoSP, you sound like you know what you're talking about from the car in your sig, and I'm sure the guys at NRG know what they're doing because I've been there and talked to them before, but that makes it even harder to understand why you would so casually dismiss a 3" pipe as "way too much". I spent all of 30 seconds with a calculator to figure out that a 3" pipe makes almost zero difference, and when I said "[/skooled]" I wasn't being totally sarcastic (OK, maybe a little humorous sarcasm) and I was literally trying to show people the kinds of things they need to be thinking about when considering turbo components, trying to educate them. Now, to answer your questions...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredoSP &raquo;</TD></TR><TR><TD CLASS="quote">what do you run on your car smart ***?</TD></TR></TABLE>

It's a stock 1g CRX Si right now, sooo...for now everything I run is stock. I have all the parts collected for a homemade turbo kit but I haven't gotten off my lazy *** to finish it yet.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredoSP &raquo;</TD></TR><TR><TD CLASS="quote"> Take a poll of what most people have, its going to be 2.5", KISS, no need for 3" unless your building a race car.</TD></TR></TABLE>

Very true, no need for the 3", but since he already has it, he wanted to know if it was a problem.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FredoSP &raquo;</TD></TR><TR><TD CLASS="quote">As far as your skooled crap goes, give me a place on LI and you'll be skooled, trust me</TD></TR></TABLE>

I have no doubt that even when my turbo kit is installed and tuned, your 355whp car will still be MUCH faster, and that means...what, I don't know?!? That you have large genitals? How about you show me how large your brain is by finding something to back up your "way too much" comment?

YOU: makes the offhand comment "3" is way too much" and maybe wastes $50-100 of the guy's money.
ME: spends 30 seconds with a calculator to show the guy that it'll work fine.

Which one of us do you think is doing Sohc Driver a bigger disservice?

 

I think 2.5" will be more effective for his application. Dude there are reasons for IC piping sizes. Umm why is it usually smaller from the turbo to the IC, then once it his the IC you usually see the diameter get bigger - Velocity. We all know there's a pressure drop even with an effiecient IC.

You speak of volume and all these times in your post, but keep in mind Earl's race car has 3" piping going to the TB and thats a 600whp+ car.

You have to look outside the box, will it work YES, but its also relative to the application and I think you overlooked that - that's my point.

The way you responded it seemed like you were talking down to me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tjbizzo &raquo;</TD></TR><TR><TD CLASS="quote">It's a stock 1g CRX Si right now, sooo...for now everything I run is stock. I have all the parts collected for a homemade turbo kit but I haven't gotten off my lazy *** to finish it yet.</TD></TR></TABLE>

OMG....you don't even have turbo.....got to the EF101 web site. MaN ,YoU aRe InsAne!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HybridcivicLS-T &raquo;</TD></TR><TR><TD CLASS="quote">OMG....you don't even have turbo.....got to the EF101 web site. MaN ,YoU aRe InsAne! </TD></TR></TABLE>

OMG...I didn't know that I had to actually own a turbo Honda to know something about them, or even how to use a calculator. I guess all those engineering and fluid dynamics courses were a waste of time then, huh? FYI I sold my 87 Supra Turbo a few months ago because I got kinda bored with it. The Supra was a fun car but it's basically just a Japanese Camaro. And wtf difference does it make if I own a turbo Honda or not? After reading this forum for a while it's obvious that a lot of turbo Honda owners don't know their *** from a hole in the ground, Stunna!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tjbizzo &raquo;</TD></TR><TR><TD CLASS="quote">

OMG...I didn't know that I had to actually own a turbo Honda to know something about them, or even how to use a calculator. I guess all those engineering and fluid dynamics courses were a waste of time then, huh? FYI I sold my 87 Supra Turbo a few months ago because I got kinda bored with it. The Supra was a fun car but it's basically just a Japanese Camaro. And wtf difference does it make if I own a turbo Honda or not? After reading this forum for a while it's obvious that a lot of turbo Honda owners don't know their *** from a hole in the ground, Stunna! </TD></TR></TABLE>

that was clean as ****. i liked that.

 

thank you for all of the input..i really appreciate it!

Khoi

 

bump...so is the verdict true...there wont' be such a huge lag from running the 3inch pipe?

Khoi

 

1) calculate the extra volume of the 3" pipe in ft^3 (volume of 3" pipe - volume of 2.5" pipe) volume = length * pi * D^2 / 4, and 1 ft^3 = 1728 in^3

2) estimate flow rate of turbo, t3t04e ~ 300cfm = 5 cubic feet / second

3) divide extra volume (ft^3) by flow rate (ft^3/s) to find out how much lag a larger pipe (or IC or intake manifold, etc) will add.

CAUTION: results may be surprising and contrary to popular opinion!

 

the verdict is that it is going to be a pain in the *** to find couplers that go from 2" to 2.5" and from 2.5" to 3" on a budget. i am assuming you are doing this on a budget because you are bought an ebay CAI for charge piping. turbonetics makes special couplers so that is where i would start looking. good luck

 

thanks..im not an engineering/fluids major..lol..but i'll take your word for it.

Khoi

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lohatch &raquo;</TD></TR><TR><TD CLASS="quote">the verdict is that it is going to be a pain in the *** to find couplers that go from 2" to 2.5" and from 2.5" to 3" on a budget. i am assuming you are doing this on a budget because you are bought an ebay CAI for charge piping. turbonetics makes special couplers so that is where i would start looking. good luck</TD></TR></TABLE>


They make 2.5--&gt;3.0 transition hoses..so im not worried And I already have the rest of my piping..im just buying the upper chargepiping. I already had one lined up...and it was my regular 2.5 cold air intake....but i bought this one off of ebay..because i wanted a bling chargepipe...LOL

Khoi

P.S I already have most of my couplings

 

Goodjob.. For the guy above being a smart ***, thinking 3inch wont make a difference. Wrong! Measuring the circumference, and "busting out the calculator" crap. Bullsh!t...! If your same "rule" apply to exhaust wise.. Ever seen dyno chart from a 2.5 inch downpipe to a 3inch? BIG DIFFERENCE! The engine performance will be poOr due to lag and to air efficiency.. This is what you called FORCE INDUCTION.. How can something be forced and compress when all the air is running into larger and larger piping everytime??????? The pressure and velocity of the air isnt just as quick, to miniplulate the air to cool through the FMIC as quickly.. Noticing your putting this in a sohc motor.. Good luck with spool times. Stick with Greddy, Apexi, Hks, etc.. They will provide you some good results and knowledge up your ***, something way more advance, then your stupid calculator. Dont over talk your mouth bro...

Maybe for a full race prepped car. But for a street? 2.25 to 2.5" is fine.. Good choice to move back with a CAI or smaller pipings..

 

i might get raped but imma take a stab at this. i think people are forgetting about velocity of the compressed air. i think you should stay with 2.25"-2.5" due to the fact that once you transition to 3" you will slow the compressed air down...which will result in the compressed air warming up and slowing the velocity of the compressed air down. i always say use the straw illustration....get a one straw and blow into it onto your hand.....then take several straws and blow it onto your hand....you can tell that the air from the single straw is colder and stronger...while the air from the several straws is slower and warmer. i wish i had some mathematical formula to illustrate this kinda stuff....but i hate math and science.....blah

 

The straw analogy was pretty dumb. The reason why the one straw was cooler air is because your palms were sweating when you thought you were going to prove something. But anyway my advice to you is to use the 2.5" piping for a couple reasons. you probably paid like $50 for the cold air intake, if you buy a quality transition hose it will be like $20+. It is recommended that you use the same diameter piping that you turbo outlet is, from there to the intercooler, and the same size that your intercooler outlet is, from there to your TB.

And what were you and your buddies having a contest of who could fit the most "straws" their mouths??? lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by synik &raquo;</TD></TR><TR><TD CLASS="quote"> Noticing your putting this in a sohc motor.. Good luck with spool times. </TD></TR></TABLE>

Its a B18b...i've never updated my SN since the swap..but my info is in the sig

Khoi