Today's Posts Mark Forums Read Calendar
Go Back   NJFBOA - Home of New Jersey's Camaros and Firebirds > Tech Forums > Engine / Power / Tuning

Notices


Reply
 
Thread Tools
Old 10-10-2021, 05:09 PM   #401
IROCZman15
10 Second Club / Meet Coordinator
 
IROCZman15's Avatar
 
Join Date: Dec 2004
Location: Roxbury, NJ
Posts: 1,949
iTrader: (7)
Pass 5:
Switched lanes. Still a fixed 125 shot coming on at 3,000 rpms. 6 second burnout. Footbrake launch from 1421 rpms. Kinda wish I was at least caring somewhat abotu reaction time, because this would have been a good side-by-side pass against that Malibu. But, like my TnT session 2 weeks ago, I was way more focused on leaving at the proper rpm instead of drilling the perfect .000 reaction time. Anyways, it went 1.47 to the 60 foot and It was spinning a bit but I staked in it and it came out of it. You can see the hood shake as the tires shatter a bit. Still, was happy with the launch, and then 1-2 shift at 6,757 2-3 shift 6492, and finish line 6606 rpms. That slight "flat spot" in the red data-trace is when the tires grabbed through the spin in 1st gear. That run pumped me up, and I was justtt starting to reel him in at the top end.


Timeslip: (best pass to date)



Datalog:



Video:
https://www.youtube.com/watch?v=O4eRbrejV0E





Pass 6:
8 second burnout, footbrake launch at 2019 1-2 shift at 6740, 2-3 shift at 6503, 3-4 shift 6012, and finish line 5438. You read that right, a 3-4 shift . I was not sure how it was going to go, and maybe it will be better, but I shifted 3-4 wayyy to early so it was a doggg in 4th gear which is a dog anyway in 700r4 transmissions.. even on nitrous. ODDLY, the mph was the same as my other passes where I was topping out at 3rd gear. ??!?!


Timeslip:


Datalog:




Video:
https://www.youtube.com/watch?v=rFkQdSR0Qcg



Pass 7:
6.5 second burnout, and a 1666 rpms footbrake launch. Using another view/page of the datalog (not pictured here) I see what went wrong on this run. One of my safeties (nitrous rich cut-off limit) was activated just a second into 1st gear, so the ecu shut off the nitrous. So my launch was good, but then it was an all-motor pass the rest of the way. Shifter 1-2 at 6523, shifted 2-3 6223, and finish line at 6249. I do physically remember shifting 3-4 during this run too, but for some reason the transmission did not make the shift. Kinda weird, but will have to look into this. It did it the previous run, but maybe it was hot or just damn tired?


Timeslip:



Datalog:



Video:
https://www.youtube.com/watch?v=SJC4wqMl8bw





Notebook:



.

Some other videos that were filmed by a drag race friend named Tom who runs at Island . Jerry also took some videos, but I feel super badly that I did not get to film any of his runs.
-note.. I do not know which pass each launch video is from, so I am sorry, I only know the one against that Malibu was pass #5.

https://www.youtube.com/watch?v=IBCsHbXhmYs
.
https://www.youtube.com/watch?v=tzVdubQuT-Y
.
https://www.youtube.com/watch?v=o1vZEO5Alg0
.
https://www.youtube.com/watch?v=f9xwD4rgd4w






Drove the car home late at night. Washed it the next morning and swapped the wheels. Took it to the North Jersey Auto Show today (Sunday) in Paramus. it was raining from the moment I left, and most of the morning. They had a smaller turnout than the usual 400 cars that they get at this show, and I was in the 1980-present class. (they only allow vehicles up to 1996, so I guess the way tos ay it is I was in the 1980-1996 class). Got the class trophy, and drove home in the rain.. with the lakewood 90/10 drag struts, no front sway bar, and maniacs on rt 8p in north jersey.





Going to look into the trans 3-4 shifting situation. My best bet about how to rev out the engine during the last 200 feet of the track is a taller set of tires.. this will have to waif for spring 2022. If anyone has a set of 15" drag wheels with a 27" or 28" tire that I could test fit for a size mockup, please let me know. It would be much appreciated.

On that note, after watching some of Jerry's videos and Tom's videos, I now know that the car does squat. In fact, I was certain that I felt the rear bump-stops hit the axle tube on at least two launches. I mentioned this to the fellas, and I ended up cranking up each reach shock .5 It was probably not enough. I have done a bunch of research and have some 3rd gen buddies who have used the drag-bag air-bags before. It is a budget friendly trick I would like to try so I am probably going to order a set of these. They will also help when I haul the hundreds of pounds of tools to and from each event too. Especially with a taller tire...

Link: https://www.jegs.com/i/Air+Lift/022/...YaAulJEALw_wcB









Misc Pics:







__________________
1987 IROC-Z - modified


Last edited by IROCZman15; 10-10-2021 at 06:44 PM.
IROCZman15 is offline   Reply With Quote
Old 10-11-2021, 08:42 AM   #402
Blackbirdws6
Lord of the rings / 10 Second Club / Meet Coordinator
 
Blackbirdws6's Avatar
 
Join Date: Aug 2004
Location: Piscataway, NJ
Posts: 6,212
iTrader: (3)
Sounds like overall a successful weekend and congrats on the new best. A couple things:

1. If you want to test fit my rear wheel/tire setup (15's w/ 28s) let me know.
2. Any reason you wouldn't go to some form of a nitrous controller vs the button? I think it would take out one less variable. The nicer controllers offer a good deal of safety features.
__________________

97 T/A Ram Air Convt
Forever dyno queen / 777rwhp 662 rwtq @ 17lbs / 10.2 @ 140

18 CTS-V
17 Sierra 2500HD Dmax
81 Turbo TA
Blackbirdws6 is offline   Reply With Quote
Old 10-11-2021, 08:51 AM   #403
LTb1ow
Mongo the Meet Coordinator
 
LTb1ow's Avatar
 
Join Date: May 2008
Posts: 16,752
iTrader: (8)
Quote:
Originally Posted by Blackbirdws6 View Post
Sounds like overall a successful weekend and congrats on the new best. A couple things:

1. If you want to test fit my rear wheel/tire setup (15's w/ 28s) let me know.
2. Any reason you wouldn't go to some form of a nitrous controller vs the button? I think it would take out one less variable. The nicer controllers offer a good deal of safety features.
He has one, its called Holley EFI.
__________________
Quote:
Originally Posted by KirkEvil View Post
repo bigals turd gen and part it out to a loving home
LTb1ow is offline   Reply With Quote
Old 10-11-2021, 05:50 PM   #404
thehazguy
 
thehazguy's Avatar
 
Join Date: Sep 2010
Location: Hackettstown, NJ
Posts: 137
iTrader: (0)
Friday ID

Some other videos that were filmed by a drag race friend named Tom who runs at Island . Jerry also took some videos, but I feel super badly that I did not get to film any of his runs.
-note.. I do not know which pass each launch video is from, so I am sorry, I only know the one against that Malibu was pass #5.

https://www.youtube.com/watch?v=IBCsHbXhmYs
.
https://www.youtube.com/watch?v=tzVdubQuT-Y
.
https://www.youtube.com/watch?v=o1vZEO5Alg0
.
https://www.youtube.com/watch?v=f9xwD4rgd4w

Dave, had fun Friday night. Nice to see you back up your 10.99 run with a few better runs. Remember practice makes perfect or at least more consistent

Video 1 - I think it was the 11.14 run

https://youtu.be/nXnUtaOg7v0

Video 2 - was the last run

https://youtu.be/3iOHxNYNH_A

Few pictures of Dave changing out the jets.

Also NJFBOA sign in front of the staging lanes
Attached Images
File Type: jpg Dave 1.jpg (100.5 KB, 4 views)
File Type: jpg Dave 2.jpg (99.1 KB, 4 views)
File Type: jpg NJDGBOA-back drop.jpg (29.5 KB, 3 views)
__________________
57 Chevy - 210 - 355 SBC-Powerglide-10 Bolt 3:73 Gears - 12.78 best et - 104.61 MPH
80 Firebird-350 SBC-Turbo 350-10 Bolt 3:42 Gear - 13.72 best et @ 97.52 mph
90 Ford F-250 - 351 Windsor my beater work/tow vehicle
96 Buick Roadmaster wagon LT-1 - (DD)
2021 Equinox - wifey's car

Last edited by thehazguy; 10-11-2021 at 07:54 PM.
thehazguy is offline   Reply With Quote
Old 10-11-2021, 07:42 PM   #405
IROCZman15
10 Second Club / Meet Coordinator
 
IROCZman15's Avatar
 
Join Date: Dec 2004
Location: Roxbury, NJ
Posts: 1,949
iTrader: (7)
Awesome, thanks Jerry. I think you are right about which video is with the # run. Cool Thanks! Always glad to have you at the track for smooth and simple guidance!

Brian: Yes , there is a chance I might take you up on that! I am just wondering about the backspacing, being that our rear axles are different width. I do have a buddy who has some taller tires/wheels on his thirdgen, and I'll gladly take a chance at test fitting a wheel from you, him, or anyone else. Also, yes, you are right about the nitrous controller, and indeed Matt is right about the Holley EFI doing exactly that. So, it does allow me to control many nitrous parameters, safeties, and whatnot. I had been used to the nitrous button before during the 5 years I had nitrous with the old TPI engine. The button is an additional item in the activation circuit, and I could easily eliminate it in just a few minutes by bypassing the wires to the button. I had initially thought that it would be "better" for me to control the nitrous via the button, but I am still getting used to it. I guess I wanted that old school rush of pushing the button and getting the result. If I can't get consistent with it, I am probably going to bypass the shifter button and just let the ecu control the nitrous. I will then set the triggering parameters accordingly.

I also gotta shift just a tad quicker from 1st gear to 2nd gear, I tagged the rev limiter just slightly in most of the passes. First gear does wick-up quick, especially on the spray, so its going to be interesting to see if I can do it.



Just ordered the Air Lift 60897 air bags, and also bought a bottle of that Geddex Burnout guard spray. I have tried waxing the rear fenders to keep burnout rubber away, but cleanup hasn't gone as well as I would like. Several people have recommended the Geddex spray, so I am willing to try it for $10.
__________________
1987 IROC-Z - modified

IROCZman15 is offline   Reply With Quote
Old 10-12-2021, 02:26 PM   #406
townsend
 
townsend's Avatar
 
Join Date: Jul 2011
Location: harmony, nj (phillipsburg)
Posts: 438
iTrader: (0)
Quote:
Originally Posted by IROCZman15 View Post
Awesome, thanks Jerry. I think you are right about which video is with the # run. Cool Thanks! Always glad to have you at the track for smooth and simple guidance!

Brian: Yes , there is a chance I might take you up on that! I am just wondering about the backspacing, being that our rear axles are different width. I do have a buddy who has some taller tires/wheels on his thirdgen, and I'll gladly take a chance at test fitting a wheel from you, him, or anyone else. Also, yes, you are right about the nitrous controller, and indeed Matt is right about the Holley EFI doing exactly that. So, it does allow me to control many nitrous parameters, safeties, and whatnot. I had been used to the nitrous button before during the 5 years I had nitrous with the old TPI engine. The button is an additional item in the activation circuit, and I could easily eliminate it in just a few minutes by bypassing the wires to the button. I had initially thought that it would be "better" for me to control the nitrous via the button, but I am still getting used to it. I guess I wanted that old school rush of pushing the button and getting the result. If I can't get consistent with it, I am probably going to bypass the shifter button and just let the ecu control the nitrous. I will then set the triggering parameters accordingly.

I also gotta shift just a tad quicker from 1st gear to 2nd gear, I tagged the rev limiter just slightly in most of the passes. First gear does wick-up quick, especially on the spray, so its going to be interesting to see if I can do it.



Just ordered the Air Lift 60897 air bags, and also bought a bottle of that Geddex Burnout guard spray. I have tried waxing the rear fenders to keep burnout rubber away, but cleanup hasn't gone as well as I would like. Several people have recommended the Geddex spray, so I am willing to try it for $10.
what width is your rear axle? i have racestar 15x10's with 28 et street pros and i am not far from you, but they are 4th gen specs, which sit in waay too much on a third gen (i test fit them on a 84 z28). i have some 15x10 racestars with no tires that are 6" backspace, but they are old style that use wobble bolts/offset washers for 5x4.5/5x4.75 pattern. i would let those go cheeeaaap

as i said on youtube, nice passes. i gotta dig thru your build threads to make this 89 formula i just picked up quicker lol
__________________
1984 Camaro Z-28
1989 Firebird Formula 5.7 tpi
1995 Firebird Formula - has THAT LT1 in it
2021 Charger Scat
2021 Durango R/T Tow n Go

Wrench/driver 94 Camaro Ellwein 383/D1SC/CPT 4l60e/9" slow pile

Last edited by townsend; 10-12-2021 at 02:27 PM.
townsend is offline   Reply With Quote
Old 10-12-2021, 07:06 PM   #407
IROCZman15
10 Second Club / Meet Coordinator
 
IROCZman15's Avatar
 
Join Date: Dec 2004
Location: Roxbury, NJ
Posts: 1,949
iTrader: (7)
cool man, thanks ! I might take ya up on that offer too. I had moser build the 12 bolt rear axle to stock GM width for 3rd gen fbody. I might be able to measure it, but a quick search on google of the big fbody websites say that the 4th gen rear is approx 3" wider. some sites say 4" some say 3.5" some say 3". My current street/autocross wheels are a 18X10 with a 5. 7/8" backspace, so there might be a chance those 15X10 wheels would work with that 6" backspace. Cool. It is promising to know that I might have some wheels to test with. This would probably be in the late winter or early spring of 2022. Thanks man!
__________________
1987 IROC-Z - modified

IROCZman15 is offline   Reply With Quote
Old 10-14-2021, 09:04 PM   #408
IROCZman15
10 Second Club / Meet Coordinator
 
IROCZman15's Avatar
 
Join Date: Dec 2004
Location: Roxbury, NJ
Posts: 1,949
iTrader: (7)
got em installed. Probably wont get to the track for another week or two though. So I'll just do some mild street hits.









__________________
1987 IROC-Z - modified

IROCZman15 is offline   Reply With Quote
Old 10-14-2021, 09:13 PM   #409
thehazguy
 
thehazguy's Avatar
 
Join Date: Sep 2010
Location: Hackettstown, NJ
Posts: 137
iTrader: (0)
Looks good Dave. Good luck
__________________
57 Chevy - 210 - 355 SBC-Powerglide-10 Bolt 3:73 Gears - 12.78 best et - 104.61 MPH
80 Firebird-350 SBC-Turbo 350-10 Bolt 3:42 Gear - 13.72 best et @ 97.52 mph
90 Ford F-250 - 351 Windsor my beater work/tow vehicle
96 Buick Roadmaster wagon LT-1 - (DD)
2021 Equinox - wifey's car
thehazguy is offline   Reply With Quote
Reply

  NJFBOA - Home of New Jersey's Camaros and Firebirds > Tech Forums > Engine / Power / Tuning

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

» Sponsor List














All times are GMT -5. The time now is 01:09 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.