bought some injectors

[Alan Pritchard]

Eh???
Not according to my thoughts....
I figured 250 bhp at standard fuel rail pressure.
Previously I was looking at 20 lb (or maybe 19) and I ran it mast javad,
with a total potential of 225bhp with tweaked fuel rail pressure. I think he
backed me up....
This is off a 5l jeep, it also appears to be the same injectors used on a
mustang cobra!!! I cant believe 180/5 *6 = 216 or 8 (don't know American
cars) 288 is what a car like that would come with????????
Its going on my stock 90q to start off with, then when proven the bottom end
is being binned, and a decent turbo bottom bolted to the ng head and fudged
intake.
My thoughts were these injectors will be good for the limits of a good stock
turbo....
 -----Original Message-----
From: 	Cody [mailto:Cody at mail.craincorporated.com] 
Sent:	10 March 2004 16:24
To:	Quattro List (E-mail); Alan Pritchard
Subject:	Re: bought some injectors

Um, only one issue with that. 5 24lb injectors at 80% duty cycle will only
support a 5cyl up to 180hp. You can use those for now, but you'll be running
them past the recomended 80%, but you will be running the injectors hot and
thier expected lifespan will shorten greatly. On an otherwise stock car just
removing the airflow plate and tuning the EFI properly should put you beyond
that 180hp mark. I'd say you should look for some 33lb injectors which
should keep you flowing for 240hp (about what you should expect @ .8bar
boost).

Maybe though I'm wrong on your application, it is a turbo 5 right? I've been
so busy recently I barely remember that MY car is a 5cyl lol.


Heres the formula just in case.
To get injector size if you know the hp:
HP divided by # of Cyl divided by 0.8 times 0.55 = Flow rate
(300hp / 5cyl / .8 x .55 = 41.25lb/hr injector for a 300hp 5cyl car)
If you know your injector size but want max hp use:
lb/hr times # of cyl divided by .55 times .8
(24lb/hr x 5 / .55 x .8 = 174hp)

-Cody Forbes
http://www.500tq.com
'86 5ktq
'87 5ktq EFI/k27
'88 80 4cyl
'88 90 4cyl


---------- Original Message ----------------------------------
From: Alan Pritchard <apritchard at seaeye.com>
Date: Wed, 10 Mar 2004 15:57:30 -0000

>>From 5o motorsport in the us.
>Set of 6 24lb 5L (I think) jeep injectors.
>All up - 214$ to the uk.
>Not bad at all, I don't think....
>Bring on my Megasquirt!!!!	
>
>Best Regards,
>
>Alan Pritchard,
>Mechanical design engineer,
>Network administrator.
>
>Seaeye Marine LTD.
>+44 (0)1329 289000
>www.Seaeye.com
>
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