Can somebody explain "Brake Specific Fuel Consumption" to me?

CManT1914 · Jun 27, 2005

I found this formula to calculate needed injector size on FTI's website, and I know what everything is except for "Brake Specific Fuel Consumption". Can somebody explain that one to me? Thanks
-Chris

IHP / NIJ X BSFC / IDC

IHP = Ideal Horsepower

NIJ = Number of Ijectors Used

IDC = Injector Duty Cycle

BSFC = Brake Specific Fuel Consumption

Example:

300 HP / 8 cylinders = 37.5

37.5 X .50 BSFC = 18.75

18.75 / .80 Duty Cycle = 23.43 lb/hr injector (24 lb/hr is the closest)

final5-0 · Jun 27, 2005

For NA use .5
For SC use .6

For a definition...I bet you can get it here
http://www.google.com/

Don't forget the 300 value your using in the formula is only 255rwhp
If you wanna think in terms of 300rwhp......
you need to use the value of about 355 in the formula

Later
Grady

CManT1914 · Jun 27, 2005

final5-0 said:
For NA use .5
For SC use .6

For a definition...I bet you can get it here
http://www.google.com/

Don't forget the 300 value your using in the formula is only 255rwhp
If you wanna think in terms of 300rwhp......
you need to use the value of about 355 in the formula

Later
Grady

Grady, I knew you'd be the one to answer my question. I didn't know that was flywheel HP either, guess that makes sense. Thanks!

final5-0 · Jun 27, 2005

CManT1914 said:
Grady, I knew you'd be the one to answer my question. I didn't know that was flywheel HP either, guess that makes sense. Thanks!

Not to be a, "I told ya so" kind of guy......................................but

I know I've posted that stuff quite a few times on this site

Nobody listens to me

I guess that makes me the Rodney Dangerfield of this site

I don't get no respect

Later
Grady

HISSIN50 · Jun 27, 2005

final5-0 said:
Nobody listens to me

I guess that makes me the Rodney Dangerfield of this site

Later
Grady

You are not alone (though in my case it is because no one has a Hissin decoder ring. ). I will post something, people keep asking about what I posted (as if my reply does not exist), and then some moron will post what I said, and everyone thanks that person. Oh well, all I care about is that people get their cars fixed.

final5-0 · Jun 27, 2005

HISSIN50 said:
You are not alone (though in my case it is because no one has a Hissin decoder ring. ). I will post something, people keep asking about what I posted (as if my reply does not exist), and then some moron will post what I said, and everyone thanks that person. Oh well, all I care about is that people get their cars fixed.

Well I see your replies and learn a good bit from them

Since I have your attention, maybe you could answer a Q or two

Should I put a Fox pcm in my car?

Which gears...355's or 373's?

Should I build a 331 or 347?

Why does my 95GT ping?

Later
Grady

CManT1914 · Jun 27, 2005

final5-0 said:
Well I see your replies and learn a good bit from them

Since I have your attention, maybe you could answer a Q or two

Should I put a Fox pcm in my car?

Which gears...355's or 373's?

Should I build a 331 or 347?

Why does my 95GT ping?

Later
Grady

You forgot the obligiatory:

What mufflers?

What shifter?

What tires?

Who would win this race?

Oh and I found some info on this after a bit of searching. It was an impulse thread. lol

super302 · Jun 27, 2005

HISSIN50 said:
You are not alone (though in my case it is because no one has a Hissin decoder ring. ). I will post something, people keep asking about what I posted (as if my reply does not exist), and then some moron will post what I said, and everyone thanks that person. Oh well, all I care about is that people get their cars fixed.

you "look" invisible since you have no sig and no avatar....which you said you were gonna do about 3 months ago

final5-0 · Jun 27, 2005

super302 said:
you "look" invisible since you have no sig and no avatar....which you said you were gonna do about 3 months ago

Yeah...................But...................

Look at his post count

He's gotta be a lot smarter than me

Later
Grady

CManT1914 · Jun 27, 2005

super302 said:
you "look" invisible since you have no sig and no avatar....which you said you were gonna do about 3 months ago

That's true, although I've learned to look (or not look I guess) for that, and usually it's JT. Which reminds me, JT, do you have any pics of your car?

super302 · Jun 27, 2005

final5-0 said:
Yeah...................But...................

Look at his post count

He's gotta be a lot smarter than me

Later
Grady

If we go by posts, then i'm supposedly smarter than you....which is most likely not true...unless you want to take a quiz about strongbad, in which i would win

CManT1914 · Jun 27, 2005

super302 said:
If we go by posts, then i'm supposedly smarter than you....

We all know better than that.

HISSIN50 · Jun 28, 2005

Wow, thanks for the kind words guys. Touche Mr Grady (about learning from one another).

Patrick, you and Daggar constantly bug me about the avatar thing and I did not get around to doing one. I will I don't do a sig because it would be long. Then you guys would get sick of seeing my posts because of the long scrolling.

Lately on the 5.0 side, it has been 'which pumpkin fluid should I run'. Somehow we make multi-page threads out of those.

Chris, I will send some pics. I forgot. Just dont tell people what a POS I drive.

final5-0 · Jun 28, 2005

HISSIN50 said:
Patrick, you and Daggar constantly bug me about the avatar thing and I did not get around to doing one. I will

We could always submitt pics for you to use as your avatar...................

Most likely it would get outta hand and the thread would be shut down cause the Mod would say ............."not tech enough", lol.

Later
Grady

CManT1914 · Jun 28, 2005

HISSIN50 said:
Patrick, you and Daggar constantly bug me about the avatar thing and I did not get around to doing one. I will I don't do a sig because it would be long. Then you guys would get sick of seeing my posts because of the long scrolling.

I got the perfect one for you:

Just do a sig and be like (I don't know what all you have done to the stang, but you could say) "X" hp/"X" tq. 'nuff said, lol

HISSIN50 said:
Chris, I will send some pics. I forgot. Just dont tell people what a POS I drive.

POS? I doubt very much that your car is a POS!

final5-0 · Jun 28, 2005

CManT1914 said:
I got the perfect one for you:

Thats just too funny Chris

Watcha think about that one? HISS

Later
Grady

HISSIN50 · Jun 28, 2005

Whoa Whoa Chris, do you work for the Government? How did you get my snapshot? I will add that I was having a bad hair day then, so dont hold it against my otherwise rugged good looks.

Grady, Ill take your avatar and you can have the poor guy with progeria.

Grady, how does 140 BHP sound? I think that would get me the respect I deserve.

You guys really crack me up.

CManT1914 · Jun 28, 2005

HISSIN50 said:
Whoa Whoa Chris, do you work for the Government? How did you get my snapshot? I will add that I was having a bad hair day then, so dont hold it against my otherwise rugged good looks.

Grady, Ill take your avatar and you can have the poor guy with progeria.

Grady, how does 140 BHP sound? I think that would get me the respect I deserve.

You guys really crack me up.

Bad hair day maybe, but at least that rash cleared up!

Can somebody explain "Brake Specific Fuel Consumption" to me?

CManT1914

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