Flow testing Direct Port?

Reply Subscribe

Thread Tools

Search this Thread

Mar 23, 2007 | 03:22 PM

87Lt1Monte

Thread Starter

TECH Regular

iTrader: (1)

Joined: Aug 2005

Posts: 465

Likes: 0

From: Huntingtown, MD

Flow testing Direct Port?

What is the correct way to flow test my nitrous fogger system? I have an edelbrock Direct port setup and a NitrousSupply flow tool.

Mar 23, 2007 | 04:14 PM

WE TODD DID

TECH Fanatic

iTrader: (2)

Joined: Feb 2007

Posts: 1,627

Likes: 290

Quote:

Originally Posted by 87Lt1Monte

What is the correct way to flow test my nitrous fogger system? I have an edelbrock Direct port setup and a NitrousSupply flow tool.

Fuel jet x nitrous jet x # of cylinders
take the square root of the above. Whatever number you end up with, is the size jet used to flow it.

Example; .028 fuel jet x .028 nitrous jet x 8 cylinders = 6272 sq root is 79.2

So you use a .079 jet in the flow gauge.

Mar 23, 2007 | 05:03 PM

jester1

TECH Regular

iTrader: (1)

Joined: Jul 2004

Posts: 482

Likes: 44

Quote:

Originally Posted by WE TODD DID

dont you mean fuel jet x fuel jet x # of cylinder = ans
then sq root of ans

Mar 23, 2007 | 05:42 PM

srsnow

Launching!

Joined: May 2006

Posts: 217

Likes: 0

From: Huntington Beach CA

Fuel jet squared * number of jets then square root.

Example:

32*32 = 1,024 * 8 = 8,192 square root = 90.5. So you would use a 91 jet to set the flowing fuel pressure.

Mar 23, 2007 | 05:52 PM

WE TODD DID

TECH Fanatic

iTrader: (2)

Joined: Feb 2007

Posts: 1,627

Likes: 290

Quote:

Originally Posted by jester1

dont you mean fuel jet x fuel jet x # of cylinder = ans
then sq root of ans

HAHA....yeah. I run most of mine squared, so It doesn't matter! I'm glad you caught that!

Mar 24, 2007 | 08:50 AM

87Lt1Monte

Thread Starter

TECH Regular

iTrader: (1)

Joined: Aug 2005

Posts: 465

Likes: 0

From: Huntingtown, MD

Thank you guys for the responding.. I will go try this out today.

Mar 24, 2007 | 12:56 PM

Ben R

TECH Junkie

Joined: Aug 2002

Posts: 3,726

Likes: 0

From: Fort Collins, CO

Quote:

Originally Posted by 87Lt1Monte

What is the correct way to flow test my nitrous fogger system? I have an edelbrock Direct port setup and a NitrousSupply flow tool.

You should contact Edelbrock before you flow your kit. Most fogger kits are designed to be flowed with a .073" jet, no matter the fuel jet you're using.

Trending Topics

418 Stroker Build

12

436
Trans cooler updated information

11

268
Engine damage diagnosing

68

3.2k
Rear End Options

8

200
Canted valve heads

151

17.1k

Mar 26, 2007 | 11:57 AM

srsnow

Launching!

Joined: May 2006

Posts: 217

Likes: 0

From: Huntington Beach CA

Quote:

Originally Posted by Ben R

You should contact Edelbrock before you flow your kit. Most fogger kits are designed to be flowed with a .073" jet, no matter the fuel jet you're using.

This isn't always the case. While some places do have you do that, I believe Speed-Tech is one. A lot will have you figure out the square area of the fuel side so you can get a true flowing pressure when setting it. The problem with using a static jet size such as a 73 is that as you change the fuel jet you change the flow area. So lets say you have 26 jets in there and flow it with the 73 (which would be the right flow area) then change to 28's and then flow it again at the same pressure. The problem is that the actual pressure at the jet will end up being lower than it was with the 26 jets. Probably not enough to make a huge difference but the more you change the actual jet size the more of a difference it makes. So unless someone has gone in and flowed every jet combination and given you a fuel pressure for each different jet setting you run the risk of having the wrong pressure.

And since Edelbrock’s nitrous department was started by and mostly still consists of NOS guys that went there after Holley bought NOS I would venture to guess that they follow the same type of flowing procedure that NOS does.

LS1 Tech Stories

The Best V8 Stories One Small Block at Time

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Brett Foote

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Mar 26, 2007 | 12:21 PM

Noyzee

8 second mod

iTrader: (37)

Joined: Nov 2002

Posts: 17,879

Likes: 1

From: East Side Performance! mASShole

Quote:

Originally Posted by Ben R

You should contact Edelbrock before you flow your kit. Most fogger kits are designed to be flowed with a .073" jet, no matter the fuel jet you're using.

thats how i roll usually unless told otherwise different from the company making the system