jhelms

iTrader: (2)

I know this question comes up, but is there a chart or something we can reference that will tell us (without going through the formula each time) BASICALLY ABOUT how much rwhp certain injectors will support in an LS1 application?

Specifically what have we seen the Vortech kit 38#'s support up to?

thanks!

RyanJ

im not at home, but i have a link to a calc that will give you ballpark Fwhp numbers i believe. RC Engineering's website i belive.

my answer is not enough if this means youre putting a Vortech on the Camaro. go with 42.5's with heads/cam and all that.

jhelms

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by DB Cooper:
<strong>
my answer is not enough if this means youre putting a Vortech on the Camaro. go with 42.5's with heads/cam and all that.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I wish! I ran 42's on an LT1 Vortech car that I had, if was going to step up with this one I'd go a tad larger.

I'm doing a bunch of reserch for a buddy of mine with a possible combination like that (blower plus low cr), he doesn't get online much.

RyanJ

kp from ill. had 38's with his ATI kit but i havent heard from him for a long while...he did go low low 11's or maybe 10's with 7psi and a stock motor. 42's are easily 50's on these motors and you shouldnt max them out too badly with a VG9# and low compression....simply put, with 9:1 wouldnt you have to pulley up past the point of max impeller speed to see 8-9lbs of boost with free flowing exhaust and ****?? maybe not...

also....with a non-aftercooled model, whatever pulley that will get you to 60000-62000rpm, headers/offroad, 9:1, stock CC heads, and stock cam....would you see ~8 pounds or more?

<small>[ March 26, 2002, 07:46 PM: Message edited by: DB Cooper ]</small>

Chris Spiess

At our FP 38s rated at standard pressure will flow about 44lb/hr. That makes them good for 625 or so FWHP @ 90% duty.

ChrisB

It depends on BSFC - for a blower type setup 38lb/hr of flow will get you pretty close to 500rwhp - I would say 470 or so with a safety margin.

44lb/hr will take you up to the 510-540 range.

Again, it is all very dependant on your BSFC. What hp goals are being sought?

Chris

ChrisB

BSFC is brake specific fuel consumption - it is basically how much fuel it takes to make a given amount of power - higher numbers indicate less effecient motors, lower numbers more effecient.

And FI application is going to have larger numbers just because of the way it works - so the same fuel flow on a NA motor will support less power on a FI motor, etc.

If the vortech 38's are rated at 43.5 psi you will be fine at the 500rwhp level, but will have virtually no headroom. I would consider the SVO 42's. You will also need to address the fuel system.

Chris

jhelms

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ChrisB:
<strong>It depends on BSFC - for a blower type setup 38lb/hr of flow will get you pretty close to 500rwhp - I would say 470 or so with a safety margin.

44lb/hr will take you up to the 510-540 range.

Again, it is all very dependant on your BSFC. What hp goals are being sought?

Chris</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What's BSFC?

I think they are looking for 500+rwhp on 92/93 octane.

Team ZR-1

Ability of Your Injectors IF 38 lb/min

FWHP 608 Duty Cycle 100%
486.4 Duty Cycle 80%
RWHP 516.8 Duty Cycle 100%
413.44 Duty Cycle 80%

Using a BSFC of .50

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by jhelms:
<strong>I know this question comes up, but is there a chart or something we can reference that will tell us (without going through the formula each time) BASICALLY ABOUT how much rwhp certain injectors will support in an LS1 application?

Specifically what have we seen the Vortech kit 38#'s support up to?

thanks!</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">

jhelms

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Team ZR-1:
<strong>Ability of Your Injectors IF 38 lb/min

FWHP 608 Duty Cycle 100%
486.4 Duty Cycle 80%
RWHP 516.8 Duty Cycle 100%
413.44 Duty Cycle 80%

Using a BSFC of .50
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for the numbers John. BTW, is .50 a pretty recognized norm for LS1's?

John we have something in common, we actually talked on the phone a year or two ago - there is a common person that screwed both of us over very badly. Anyway, hope things are going good for you, thanks for the numbers again.