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VT V8 injector scaling info
Posted: Tue Apr 19, 2011 9:26 am
by dmac_25
G'day guys
Just want to get the VT V8 injector scaling info known as the vn-vs stuff is easily calculated with the handy kinjflow calc but the vt on is different just a clairification that it's just a simple flow rating adjust or something special like the vn-vs gear
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 10:25 am
by The1
has the same option in the xdf i thought
Base Injector Rate - msec/gram
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 1:15 pm
by dmac_25
That's correct just want to cobfirm there is no funky business going on when putting in bigger injectors say stock 5.0 to 5.7 355 injectors just convert the lbs/hr to msec/grams and plug it in
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 1:25 pm
by The1
yeh that's it, funky business
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 2:00 pm
by dmac_25
Cheers mate
What is your conversion rate as I carnt find a lbs/hr to msec/grams just lbs/hr to grams/second of 1 lb/hr= 0.000125998grams/msec
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 3:05 pm
by VL400
In the kinjflow spreadsheet from holden202 you should be able grab the fuel weight in grams. The VT PCM has a calc of X/20480 to give sec/gram. So if you know the lb/hr rating of the new injectors you can work out the grams/sec and then get the reciprocal. Or knowing the standard injectors and what your upgrading to can do it this way ..
https://pcmhacking.net/forums/viewtopi ... =10#p12595
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 4:23 pm
by dmac_25
Cheers for that mate I'll put a scenario to you to confirm that's the way to do it:
26.5lb injector = 3.34 grams/sec
3.34 x 0.001 to get into msec
Then 1/0.00334=299.4012 msec/grams
That sound fair??
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 4:52 pm
by dmac_25
I'm talking shit that doesn't work I'll re look at it
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 7:25 pm
by VL400
Seems to work out the same for me following the data in the kinjflow calc. Although I dont know what size injectors are standard - the stock bin has 362.5 msec/gram so works out to 21.9 lb/hr or 224cc/min. Anyone know? Thought they were larger than that.
Re: VT V8 injector scaling info
Posted: Tue Apr 19, 2011 7:31 pm
by The1
here's a table i had a while ago
vn v6 up to 10/90: 0 280 150 901
vn,vp,vr v6 from 11/90: 0 280 150 960
vs v6: 0 280 150 973
vt,vx,vy v6: 0 280 155 777
vs,vt,vx,vy v6 s/c: 0 280 155 868
vl grp A v8 5.0l: 0 280 150 901
vn v8 5.0l (incl vn & vp clubsport): 0 280 150 901
vn grp A v8 5.0l: 0 280 150 706
vp,vr,vs v8 5.0l (incl vr & vs clubsport): 0 280 150 960
vt v8 5.0l (incl vt clubsport): 0 280 150 973
vr,vs,vt 5.7l(215kw gts): 0 280 150 775
vt,vx,vy v8 ls1 (incl all ls1 clubsports): 0 280 155 931
vt,vx,vy,v2 ls1 gts (300kw): 0 280 155 890