Rich,
Injector size should be predicated on how much HP you want to make and how
much air you can get into the engine. Virtually all injectors are flowed at
43 PSI fuel pressure. If you raise the pressure, you get more fuel for a
given injector pulse. You really don't want to take an injector much past a
duty cycle of approx. 80% or the injector stands a chance of locking.
Raising the pressure also tends to generate its own set of problems. Stock
injectors work fine with the stock intake track. My opinion, I prefer to go
with larger injectors instead of raising pressure (easier to tune at the
computer). If your goal is 350 - 400 HP and you can get the air that you
need, then 310 CC (30 lbs.) injectors is what you need. You don't need to
raise the pressure and the injectors will not see a duty cycle much higher
than 74%. The fuel maps will need to be changed especially at an idle (way
to rich if not changed)......
Frank
> -----Original Message-----
> From: Wisotzkey, Rich [SMTP:Rich.Wisotzkey@gsc.gte.com]
> Sent: Thursday, August 26, 1999 11:06 AM
> To: 'dakota-truck@buffnet.net'
> Subject: RE: Subject: DML: Anyone running 30lb injectors?
>
> Thanks to you too Patrick. Guess I'll stick with the 24lb injectors.
> Rich
>
> -----Original Message-----
> From: Kabuki2@aol.com [mailto:Kabuki2@aol.com]
> Sent: Thursday, August 26, 1999 1:17 PM
> To: dakota-truck@buffnet.net
> Subject: Re: Subject: DML: Anyone running 30lb injectors?
>
>
> In a message dated 8/26/99 1:14:07 AM Eastern Daylight Time,
> Markram123@aol.com writes:
>
> << unless you are going to run a high lift cam (above .520 lift),ported
> heads and a 4 barrel throttle body 30lbers are just too much... >>
>
> Forgot about you, Mark...... but he's right, FWIW, I run the stock 19#
> injectors on my Blown SS/T... stock heads, .512" cam that cant seem to
> keep
> valve springs in one peice. These R/T springs are really beginning to
> annoy
> me.
>
> I've got a 24# set that's going on in the next few days (need to replace
> another valve spring....grrrr) and I'm going to use the stock computer at
> first. Will let you folks know how it works out.
>
> I know it'll run a tad bit rich at idle..... but I always liked to clear
> the
>
> engine before my dragstrip pass' anyway :-)
>
> Really makes people do a triple take when they hear a cammed, full size
> truck
> pull up to the staging lanes... blower whining away....
>
> fun fun . . .
>
>
> ttyl
> Patrick
>
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