[urq] EFI + MAC-14 maxing ataround 5k RPM

Cody Forbes cody at 5000tq.com
Tue Oct 23 19:29:42 PDT 2007


37lb/hr times 5 cylinders = 185lb/hr total.
185lb/hr divided by 0.55 BSFC = approx. 336hp worth of fuel at 100% duty 
cycle.

You are looking at injectors barely good for 275hp in safe duty cycle 
ranges.

That said, injector sizing is **NOT** your issue with no load on the engine. 
It is however a big problem on the road at even mild boost levels.

-Cody Forbes
http://www.5000tq.com
'87 5ktq - Fast.
'87 5ktq QLCC'd plus some
'86 5ktqCD
'86 5k
'86 5k


Ben Swann wrote:
> I have had some conflicting information on them - I originally had
> information they were
> 42 lb/hr and purchased as:
>
> Injectors are Blue Top 42 lb/hr or stock AAN blue
> 2.4       210
> 2.55     pintle (1)
>
>
>
> I found other info. on them  -
>
>
>
> D3165BA are 37 lb/hr Delphi-Lucas RS-2 equivalent.  These are
> supposed to be good for
> use in an RS2 upgrade to an AAN/3B engine, so should handle my
> fueling requirements
> regardless.
>
>
>
> I'll stick with the presumption they are 37 lb/hr high impedence.
>
>
>
> Ben
>
>
>
>   _____
>
> From: Mark R [mailto:speedracer.mark at gmail.com]
> Sent: Tuesday, October 23, 2007 7:48 PM
> To: Ameer Antar
> Cc: benswann at verizon.net; quattro at audifans.com
> Subject: Re: EFI + MAC-14 maxing ataround 5k RPM
>
>
>
> Good poin, Ameer.  Are they confirmed to be 42-lb. injectors?
>
>
>
> Mark
>
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