Turbo 60fters
<small>[ July 28, 2002, 07:33 PM: Message edited by: Cool28 ]</small>
It wasn't spinning, it was hooking then bogging!
I'm launching off a 2-step with a 3k pill. I'm not "matting" the pedal because I don't want to leave at full boost <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" /> but I was able to make it 60' (in order) 1.62, 1.54, 1.49 buy increasing the boost at launch. I am using a tranny brake FWIW, but Harlen's 2-step should help immensely if you don't already have one.
Why won't your car 60'? spinning? bogging?
laterz
1966 Chevy II twin turbo LS3 project
2016 Z07 Carbon
When the 12 bolt went in w/ the SFC's and LCA's i could never get below a 1.8
When i upgraded my torque arm, that helped alot. Finally getting the pinion angle where it needed to be netted some decent low 1.7's
Best to date is 1.69
I launch with 0 boost however. Thus the reason behind the 2-step. I needed that 300 RWTQ torque difference between 0 boost and 10 psi.
Based on my data logs it was taking .7 to .8 seconds from launch at 5800 (clutch dump) to build full boost. That's a good part of the 60' <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
I'll know soon enough if the 2 step is gonna do it's job.
My local track was hooking great Saturday night and I ran (in order) 6.07, 5.93, 5.92**, all at around 110 mph. I just kept increasing the boost at launch and track held it. I'm running 28x13.50 QTP's FWIW.
** My local track is somewhere around 600' long, you should add .30-.35 seconds to my E.T to get semi-accurate 1/8 mile times. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
1966 Chevy II twin turbo LS3 project
2016 Z07 Carbon
<strong>My local track is somewhere around 600' long</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">damn red necks <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
you coming up for woodward?? I'll have my car running by then if it kills me, and i'd love to check out your setup. I'm sure HRH will drag you out that week <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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I wanted to turn it up, but the boost controller wasn't working <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
Scott
My car seemed to like the rpm set higher than i really liked to leave on though (liked it right about 5500) <img border="0" alt="[Firebird]" title="" src="graemlins/formula.gif" /> <--you with two step <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
1.Set it off the brake pedal When brake pedal is fully engaged have the trigger flip.
2 set a switch on your steering wheel with the 2 step and maybe a line lock then stage the car that way if the fronts will hold that is.
3 have a switch somewhere that you hold and when you release the brake release the button.
For me... I would get ready when both cars are in the beams I would mat (full throttle) the car. Boost would go almost immdiatly up to full boost. You can play with the throttle then to get it down.
On a auto though I would think you should be able to build boost when you floor with the brakes engaged anyhow...
Do you have a converter?
Its nice to leave the line in a manual with 17psi [/QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You mean you left the line with 17 psi, with a T56? <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Or can you clarify?
j/k Steven, but I seem to recall some major havoc to the drivetrain after your T-76 upgrade.
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
...Brady
1966 Chevy II twin turbo LS3 project
2016 Z07 Carbon
26/1150/16 et streets at 14 psi cold, hal shocks on 1 frt and 5 rear. do a big bunrout, Dump the clutch at 5500 and hold on.
Now that I am having clutch issue's I haven't been back to the track. Last couple of launches the clutch would only come halfway off the floor after a good launch. Not sure whats causing it yet.
Yanked tired on the street with the two step and a t-72q trim.
Loaded up car and went to the track unloaded and had a horrible day to start battery died (someone forgot to turn interior light off doh)
But then go to the line staged built boost built even more boost launched moved a wopping 12 inches granted the front end was on its way up but then the Torque arm, drive shaft, and rearend exploded oops did I do that.. load car on trailer and head to bar lol. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
I hear ya brady <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> it is all good i just am building this thing to take king kongs motor
<small>[ July 30, 2002, 11:03 PM: Message edited by: zturbo ]</small>
I want to see how it performs with an aluminum flywheel. If the flywheel doesnt launch ok, I will change back to a stock flywheel. My question is where do you start to see boost....would be nice if you could lauch at 4000 rpms with 4-5 psi


