Injector sizing?
Thread Starter
Joined: Apr 2002
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From: Midland Texas
Injector sizing?
I was just curious to know what size injectors are in a stock 20b and how much hp there good for? Also what injector combination is good for say 650rwhp? I would like to use 850cc primaries and 1300cc secondaries. Is that combination to small or to large? Thx in advance
Trey
Trey
Joined: Mar 2001
Posts: 31,833
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From: https://www2.mazda.com/en/100th/
Originally posted by Turbo 3
550cc's primary/secondaries I believe. Don't know on the rest...
550cc's primary/secondaries I believe. Don't know on the rest...
mike
Rotorhead
Joined: Feb 2001
Posts: 9,136
Likes: 39
From: Charlottesville, Virginia, USA
See this site:
http://www.rceng.com/technical.htm
Evil notes:
1) Fuel pressure AT THE RAIL plays a big part, so don't fall for that internet BS about x-cc injectors are good for y-amount of horsepower.
2) Fuel injectors are rated at various fuel pressures. See #1 above for the same internet BS warning.
3) The BSFC is going to depend a lot on how rich a mixture you run, which will probably also depend on how much boost you run. Plan on a horrid BSFC for 650hp at the wheels (approx. 750hp at the flywheel). If you can find someone who is already running a similar setup (porting, intake, turbo, intercooler, fuel grade, etc.) to what you are planning, then you can ask them about their BSFC, or even their injector setup for that matter.
http://www.rceng.com/technical.htm
Evil notes:
1) Fuel pressure AT THE RAIL plays a big part, so don't fall for that internet BS about x-cc injectors are good for y-amount of horsepower.
2) Fuel injectors are rated at various fuel pressures. See #1 above for the same internet BS warning.
3) The BSFC is going to depend a lot on how rich a mixture you run, which will probably also depend on how much boost you run. Plan on a horrid BSFC for 650hp at the wheels (approx. 750hp at the flywheel). If you can find someone who is already running a similar setup (porting, intake, turbo, intercooler, fuel grade, etc.) to what you are planning, then you can ask them about their BSFC, or even their injector setup for that matter.
Joined: Mar 2001
Posts: 31,833
Likes: 3,232
From: https://www2.mazda.com/en/100th/
Originally posted by Evil Aviator
See this site:
http://www.rceng.com/technical.htm
Evil notes:
1) Fuel pressure AT THE RAIL plays a big part, so don't fall for that internet BS about x-cc injectors are good for y-amount of horsepower.
2) Fuel injectors are rated at various fuel pressures. See #1 above for the same internet BS warning.
3) The BSFC is going to depend a lot on how rich a mixture you run, which will probably also depend on how much boost you run. Plan on a horrid BSFC for 650hp at the wheels (approx. 750hp at the flywheel). If you can find someone who is already running a similar setup (porting, intake, turbo, intercooler, fuel grade, etc.) to what you are planning, then you can ask them about their BSFC, or even their injector setup for that matter.
See this site:
http://www.rceng.com/technical.htm
Evil notes:
1) Fuel pressure AT THE RAIL plays a big part, so don't fall for that internet BS about x-cc injectors are good for y-amount of horsepower.
2) Fuel injectors are rated at various fuel pressures. See #1 above for the same internet BS warning.
3) The BSFC is going to depend a lot on how rich a mixture you run, which will probably also depend on how much boost you run. Plan on a horrid BSFC for 650hp at the wheels (approx. 750hp at the flywheel). If you can find someone who is already running a similar setup (porting, intake, turbo, intercooler, fuel grade, etc.) to what you are planning, then you can ask them about their BSFC, or even their injector setup for that matter.
mike
Thread Starter
Joined: Apr 2002
Posts: 6,719
Likes: 26
From: Midland Texas
Originally posted by Evil Aviator
See this site:
http://www.rceng.com/technical.htm
Evil notes:
1) Fuel pressure AT THE RAIL plays a big part, so don't fall for that internet BS about x-cc injectors are good for y-amount of horsepower.
2) Fuel injectors are rated at various fuel pressures. See #1 above for the same internet BS warning.
3) The BSFC is going to depend a lot on how rich a mixture you run, which will probably also depend on how much boost you run. Plan on a horrid BSFC for 650hp at the wheels (approx. 750hp at the flywheel). If you can find someone who is already running a similar setup (porting, intake, turbo, intercooler, fuel grade, etc.) to what you are planning, then you can ask them about their BSFC, or even their injector setup for that matter.
See this site:
http://www.rceng.com/technical.htm
Evil notes:
1) Fuel pressure AT THE RAIL plays a big part, so don't fall for that internet BS about x-cc injectors are good for y-amount of horsepower.
2) Fuel injectors are rated at various fuel pressures. See #1 above for the same internet BS warning.
3) The BSFC is going to depend a lot on how rich a mixture you run, which will probably also depend on how much boost you run. Plan on a horrid BSFC for 650hp at the wheels (approx. 750hp at the flywheel). If you can find someone who is already running a similar setup (porting, intake, turbo, intercooler, fuel grade, etc.) to what you are planning, then you can ask them about their BSFC, or even their injector setup for that matter.
Thx Evil, Well in that case, I guess it's "PM" time!
Hmmmmm I guess I could ask the guys at Mazda Trix
Thread Starter
Joined: Apr 2002
Posts: 6,719
Likes: 26
From: Midland Texas
Originally posted by j9fd3s
me too. i'm running about 75% duty @10psi and 6500rpms on the stock injectors and turbos, if that helps
mike
me too. i'm running about 75% duty @10psi and 6500rpms on the stock injectors and turbos, if that helps
mike
How much power are you putting down?
Trey
Trending Topics
Joined: Mar 2001
Posts: 31,833
Likes: 3,232
From: https://www2.mazda.com/en/100th/
Originally posted by t-von
How much power are you putting down?
Trey
How much power are you putting down?
Trey
mike
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