tape you cam on the rear spoiler so we can see it gettin squirrelly!

 

Just meet me on the t-pike and you can just video tape me from behind the car...

 

LOL i would but im livin in Vegass now

 

Ok heres a little log, some numbers from it and once the video gets done uploading ill link it up on here. I got a new camera and I hate it!! I forgot that it recorded the video in hi-def. So its taking forever to upload.

Heres the #'s Also these numbers are much better then any ive recorded before. 0-99/100Mph is a solid 0.5 seconds faster then any previous logs.
These are off the datalog...
0-60Mph 6.27 seconds
0-70Mph 7.89 seconds
0-80Mph 9.88 seconds
0-90Mph 12.40 seconds
0-95Mph 13.87 seconds
0-99Mph 15.09 seconds

Gtech said these numbers....
0-60 6.25 seconds
1/4 mile 14.76@99.3 Mph.

Sorry about the glare in the video, and youll see that on that start i literly just let off the brake and floored it so thats a horrible launch in my mind..too forever to spool up. But april 14 marks the first day at the track so I can see then how well the car will go..Hopefully its not slower then a high 14's at the track...

Ill link up the you tube video in a little bit. Im going to mess with the IC and airdam right now, to get it to me more effiecient.

 

Here you go be gentel on me..

http://www.youtube.com/watch?v=QOks7...ature=youtu.be

 

crank the boost to 15psi and youre into the 12's, well if your tranny holds up lol

 

Not yet, i dont think my injectors will handle that much for now, there only 30lbs ones. In due time....

I remounted the Intercooler and I think it actually works much better, i didnt get to drive it much but when I did make boost the intake temp didnt move much, actaully it went down a degree or so for a second when the bosot started.

Heres how I mounted it and hopefully a rock or something doesnt trash my fins, but oh well it works better. I attatched a log also of just the rows of boost, after driving it for 10 minuets. its 70 degrees out so my under hood temps are a good 10* above outside air.

I also bent the airdam to be slightly curved twards the front of the car, it as bent the other way before from years of abuse.

Airdam with some re-enforcement...


Looking down at the IC


Looking up at the airdam... dont mind that brace hanging there, its properly holding the IC now. i ahd to bend them on a 30* angle to get all of them on right. I have 4 braces on the IC so its not vibrating or going anywere.

 

hey fast u might get some extra help here shortly i just picked up a 91 rs with a 3.1.
im going to give the stock ecm with code 59 a shot but the first time it pisses me off im swaping it out for a megasquirt lol

 

Cool man! Its not maui blue is it?? Its weird that your first turbo camaro was the same color as mine.

I like the $59 alot so far, after I learned how to work out the little kinks in it.

 

its white. in due time i plan to add one of each year f-body to my collection, next up is finding a nice roller for a lsx swap

 

You plan to slap a turbo on that 91 V6?

 

after turboing a few v6 cars i will never ever drive a 3rdgen v6 car that is n/a again lmao

 

Stop by eastern Iowa, i'll change your mind on that.

 

your car may be the one exception to that rule

 

I agree on that I wouldnt drive another non turbo V6 thirdgen again, EXCEPT a beefed up hybrid one like Deathstarr(is yours a full 3.5 swap??) Or one thats really built N/A.

 

haha i just noticed the name change


FE, iirc the turbo buicks ran 12 psi thru first and second gear with those injectors. rob may be able to chime in and confirm. if you carefully watch your injector PW you can turn the boost up a little at a time until you reach the 80% or so duty cycle of the injectors.

 

thats the 3500 LX9, with a mammoth cam lol

 

Ok what PW numbers are bad?? On these injectors...any ideas?

It peaks in the 11.32 area on a 1/4 mile run @ WOT. But is mostly in the 10.xx when WOT and under full boost 10psi.

 

Crap man, now you got me woundering about the injector PW and what my DC of the injectors is

 

11.32 ms at what rpm? 6000?

 

5700Rpms.. ... is this bad?

 

Man im useing the formula of PW X RPMs/600 and im getting 102%???? This is at 10.5 Psi of boost
How is a 103% Dc possible?

 

Heres the log if anyone want to look(1/4 mile log WOT). The pause width is about 10.5 or so but on a short burst tonight when driving i did see 11.32
Please let me know how to calculate the DC of the injectors as I have no idea how to do it right. Thanks for any help!!!!!!!!!!!!!!

How the HE%L did I max them out so fast. Its only 10-11psi
Crap Crap Crap. That means im making like 250Hp+???? To max them out..

 

i dont think so, according to a rough calc its only around 55% lol.

 

Howd you calculate it?

 

not possible, injectors start going static a little above 90%

http://www.stealth316.com/2-calc-idc.htm

 

Ahh man I actually have a DC history table for the injectors. Guy just hooked me up with a modded ADX to view it on $59 files.

Its a steady 80% + at those high RPMs/Boost. Max of 91.22% DC when shifting into third. Man I still cant believe this crap.

 

hmmm, that seems kinda high to me. iirc some TR guys run the stockers and get into the 12's. well if it starts to lean out no matter how much you add to the tables then you know you have reached the limit lol. dont take my word as gospel tho.

 

Ok man now problem

I just wont turn that boost up anymore till I figure out whats its doing FORSURE. I like my car too much to kill it. Ill actually turn it back down to 9.5Psi from 11psi for my own piece of mind...

 

100% duty cycle is 25.5ms

u are around 55%

 

what size injectors again?

 

the LC2 28#ers i believe

thats what i got too ~55%

 

like u said if u command more fuel and the afr dont change its time fo rnew injectors

 

i learned that the hard way(or easy way?) to figure out my fuel pump was weak lol

 

55% DC..wouldnt that mean that im only sucking about 160-200Hp??

Heres my formula:

with $59, it should be double-fire, so (X*y)/600, that will make a %.

X and Y being PW in mSec and engine speed in RPM.

Average PW is 10.3 @5500Rpms = 94%DC

I peak @ 11.32PW on a few ocasions@ high boost 11Psi.

 

Yes, the turbo buicks were tuned for 15-psi right from the factory. Although rated at 28-lbs, the stockers actually flow closer to 30-lbs. He should really have no problem hitting high 12's with the stock LC2 injectors. What's holding him back though is that torque converter...

 

5500 RPM divided by 60 = 91.667 RPS (rev per second)

In double fire the injectors fire once per engine revolution, so invert the 91.667 RPS for time based: 0.01091 seconds per revolution, or 10.91 msec.

Divide the injector PW in msec by the time between revolutions:

10.3 / 10.91 = 94% DC

So your calculation is correct. The key now is if the AFR is OK. It may be too rich which causes excessive duty cycle.

Recall that the LC2 engines run SFI, which adds injector headroom.

RBob.

 

I mentioned that it may be too rich, but it may be that the fuel pressure is dropping off. As the boost increases so does the fuel pressure. This puts an additional load on the pump which causes a drop in the available flow.

RBob.

 

Bob is right, I completely overlooked that...

 

Ok guys thanks. The AFR is not dropping off at those boost levels, there nice and steady at the 12.0 mark, which is what I was aiming at.

What you guess on the next step? Bigger injectors, a better inline fuel pump?? Check the fuel pressure when under boost were the DC goes up???

On my logs im constantly pullying 80-85% Dc when 10.5Psi is the command and its under WOT, and when the boost spikes it goes to that 90-92% area for just a hicup....

 

The next step is a stall speed converter. You can play with the fuel and spark settings, but the gains are minimal at this point with those injectors and capped boost pressure. You trap speed is very close to a 12 second pass, and every tenth in your sixty foot equates to about two to three tenths in your ET. Get a 3000+ stall speed converter, and take it to the track...

 

Ok Thanks Rob! Im going to sit on these injectors at 9.5Psi, which I know is safe and see what it does at the track. then modd it from there. Gotta save up some $$.. car is making me broke...

 

Check this file out please. Are these dutycycles safe?? Im not going to run up more boost then this. As the DC is under static areas in this 1/4 mile WOT logg. I arranged the excel file so that its based off of injector DC then Boost Pressure.

Thanks guys!!

 

stock fuel pump is good for enough power to run into the 12's , i didnt have to change my pump out till i got into the lower 12's

though i would sugest making sure the 3.1 fp is the same as the stock 2.8 fp
with gm u never know if something like that changed over the years


and how the hell is he maxing those injectors ? max pulse width should be 25.2ms and he is only at 11.32ms
or is the max pw on a gm ecm different from others ?

 

I have no idea but thats the results in the ADX datalog file...

But think about it... my peak DC is 85% in that log roughly.
So... 6 injectors x 28Lbs x .85% duty cycle = 142.8 divided by .60 BSFC

That formula equals 238Hp. Thats not that much Hp considering its at 10-11psi, and the valvetrain stuff I did over the winter.

 

dont get to hung up on the hp rating, i can show u a car that dynos 350whp and will run very low 10's.

also u will need more boost then normal because of the style turbo system u are running.
u would make another 30 or so hp with a real turbo header

for now u just need to maximize what u have, converter, suspension gears, launch technique. etc

since i just picked up a new rs camaro i tried to get in touch with my contact over at tci and it dosent look like they offer or can build the v6 converter anymore , which is a shame cause they buiolt a badass converter for our cars.

im going to contact dana from probuilt nd see if he can do anything for us v6 guys


edit use .55bsfc

 

Will a converter thats 10" for a 700r4 will it work right>>

Ok Im not hung up on the Hp really i was just saying that its realistic that I basically am maxed on my Hp for the stuff i have. And 240Hp is a nice number...100Hp over stock

 

Never know what condition the pump, sock, and pulsation damper is in.

For the injector DC% I showed the math a few posts up. If the fuel pressure/flow can't keep up, neither will the injector duty cycle stay down.

RBob.

 

Yep, There is always room for improvement though.. the stock bottom end is holding me back at this point.

Maybe a 3.6 crank, better rods and 3.6 pistons for 14:1 SCR will do the trick.

 

a 10 inch would be a very tight fit , stock is 9 3/4
u need a 27 spline converter i v8 converter prolly wont work even if it was 9 or 10 inches since the ppilot on coverter were it slips in to the crank is larger on the v8 units

techincally u could use a 9inch( 10 inch if it fit in the bellhousing) v8 converter as long as it was 27 spline but u would have to have the crank pilot machined down in a lathe