Flow Rate Formula is what you need - Saab Performance Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
[General | Members | C900 | 9000 | NG900 & OG93 | 93 | 95 | NG95 | 99 | Sonett | Vintage Models | Clubs | Other Cars | FAQs | Gifts | Member Photo Galleries | Member Directory | Classifieds | Manuals | *Buddy Registry | *Mileage Registry | Polls | What's New | Raffle | Photo of the Month | Sponsors]

Performance Bulletin Board
[Subscribe to Daily Digest]
(Search Author's Posts: e.g. Keyword:username)*Members Only

[Main Performance Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Flow Rate Formula is what you need
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by Brownie (more from Brownie) on Mon, 5 Jun 2006 12:05:11 Share Post by Email
In Reply to: fpr/injector flow rates, grlyd, Sun, 4 Jun 2006 15:59:53
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup

As Chris said, your question can't be answered with the information you've provided. It's easy to find the equation online, but you need to know 3 pieces of information:

Rated Flow of injector
Fuel Pressure at which the flow rate was obtained
Fuel Pressure at which you intend to run the injector

Here's the equation:

[SQR (new FPR rate / specified pressure for injector's rated flow)] x rated injector flow = new injector flow rate

SQR means to take the square root of the value in parentheses.

Helpful information for you:
Stock 900turbo injectors are 21 lbs/hr at 2.5 bar

The common "30lb" and "24lb" injectors that a lot of people run on this bb are Ford Motorsport injectors that are rated at 2.7 bar.

The "24lb" injector commonly used is Bosch # 0 280 150 947.

The "30lb" injector that I use is Bosch # 0 280 150 945 which is rated at 29.4 lbs/hr at 2.7 bar. Jak Stoll's LH 2.2 stage 1 chip was written for this injector run at 3.0 bar.


For what it's worth, I've gone through almost the entire range of fuel upgrades and each one was an improvement.

1: Stock 21# injectors with stock 2.5bar FPR
2: Stock 21# injectors with 3.0 bar FPR
3: Ford 24# injectors with 3.0 bar FPR
4: Ford 30# injectors with 3.0 bar FPR and Jak's stage 1 chip

Have fun.

Aloha, Chris







posted by 70.95.71...

Posts in this Thread:
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

Name: Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
E-Mail: (Optional)
Re-Enter E-Mail: (Confidential & Secure - Not revealed to other users!)
Note: Please check your spam folder for BB responses.

Subject:

Posting rules are simple - No for sale/wanted ads may be posted here - use the site classifieds.
You may not cross-post your message to multiple BBs.
Not permitted: political/religious topics and being disrespectful (personal attacks, insults, etc...).
 Site Members do not see any red text, inline ad links, bottom of page anchor ads, box ads, or anti-spam check.

Message: (please no for sale/wanted classifieds - post those in the Saabnet.com Classifieds)
Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).

Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post above, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).
Optional Link: (e.g. http://www.saabnet.com/)
Link Title: (Optional)
Optional Photo/Image Link: (e.g. http://www.saabnet.com/img.jpg)
Photo/Image to Upload: (Please be patient while file uploads)



StateOfNine.com
SaabClub.com
Jak Stoll Performance
M Car Covers
Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right. Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY. Classifieds are to be listed in The Saab Network Classifieds pages. This is a problem solving forum for over 250,000 Saab owners, so expect to see problems discussed here even though our cars are generally very reliable. This is not an anything goes type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the Saabnet.com Mission and Purpose Page. Please remember that you are not anonymous. Site Contact | Site Donations | Other Sites by SP - Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot


Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all the Site Membership Benefits!