[DeTomaso] Fw: Jets

[Will Demelo]

"""Above about 450bhp, all engines need at least 3/8" to
1/2" or even greater ID fuel lines including the inner tank line, """

What is bhp? Brake hp?  RWHP How are new cars measured? I understand after 
71? they started advertise hp numbers differently?
Will (still confused)

----- Original Message ----- 
From: <JDeRyke at aol.com>
To: <wkooiman at earthlink.net>; <detomaso at realbig.com>
Sent: Wednesday, May 23, 2007 7:23 PM
Subject: Re: [DeTomaso] Jets


> In a message dated 5/22/07 2:40:53 PM, wkooiman at earthlink.net writes:
> snip.....
> << When we did the dyno day in Houston, we saw very little differences
> between  2-3 jet sizes.  It took about 6 sizes before the A/F ratio moved. 
> In one
> case, we went 10-12 sizes larger, but the A/F was still lean.  We finally
> suspected a fuel delivery problem - fuel pump, fuel sock plugged, even 
> tiny holes in
> the rubber lines..... >>
>
> FWIW, the stock ~0.30" ID fuel-out line from a Pantera gas tank will only
> support about 450 real horses before flow restrictions cause high speed 
> lean-out
> no matter what other fuel-line additions are included. This's one more 
> reason
> I and many others are amused at claims of monster power with a stock 
> DeTomaso
> fuel delivery system. Above about 450bhp, all engines need at least 3/8" 
> to
> 1/2" or even greater ID fuel lines including the inner tank line, out to 
> the
> pump and even bigger from pump to carb. Pro racers use dash-8 into and 
> dash-10
> AN lines out of the fuel pump. On an engine dyno of course, all this is 
> sized
> correctly for expected power levels, and unexplained drops in performance 
> or
> even engine damage after installation in your chassis is not unusual with 
> a
> stock tank & a big motor that actually gets worked hard.
> And before the hate-mail comes in, yes- fuel injection with its 45-65 psi
> fuel pressures can pull a little more than 450 bhp from a skimpy stock 
> tank line
> before running lean, especially if you're using an in-tank pump. But its 
> best
> to markedly increase the line size from inside the tank to the pump before 
> the
> engine is installed, since sometimes welding might be needed. Just a 
> thought-
> J DeRyke<BR><BR><BR>**************************************<BR> See what's
> free at http://www.aol.com.</HTML>
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