ZRXDean
Needs a job
Posts: 2225
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posted September 12, 2002 08:36 AM
Nitrous update - in the 8s
After screwing around for a month trying to get a handle on the nitrous setup, I finally squeaked into the 8s yesterday. Last Saturday I ran 4 nitrous passes, with a best of 9.06, 1.56 sixty foot, struggling to keep the front down in second. I had added weight to the lockup, thinking I would prevent top end slippage from the nitrous. I have tired OEM springs in it, and 3 back-to-back plate pairs in my clutchpack. I bumped it from 3 to 6 aluminum 1/4" bolts. The progressive box was set to come on .7-1.2 sec post-WOT, at 30-50%, and ramp to 100% over .5-1.5 sec. I am in the early stages of experimentation with tuning this system- I've had about 16 passes with nitrous over the past month. The NX nozzles are jetted 24N/22G, fuel pressure is about 4.5psi flowing, and I take out 12 degrees of timing when the nitrous hits. 64" wheelbase, 165hp on the motor.
So for Wed I cut the arm weight to 3 bolts, and it made a big difference- although unusual. My 60 foots slowed 3-4 hundredths, but my 330s picked up 7-10. I guess the slippage got me to full throttle sooner - and thus the nitrous came on sooner, and by the time the ramp gets from 50-100% the pack is tight and I'm moving. I feel lazy with 1.60 sixty foots, but if it gets me low 5.90 eighths, I'll learn to adapt. Actually I'm gonna add one more bolt to the arms and see what it feels like. I can also try cutting the onset time more- but I'll try the weight first I think. Sound reasonable to you guys? This is what having a hobby is all about.
These are from last nite in order - looks like I lost short time but picked up 1/8 ET.
  
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madmike
Moderator
FEAR THE BLACK FLAG!!!!!!!!
Posts: 6579
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posted September 12, 2002 09:18 AM
CONGRATS!!! good job man! keep it up...
Mad Mike
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kcadby
Pro
Posts: 1733
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posted September 12, 2002 09:51 AM
WOW!!! 132+mph 1/8!!!
SO very cool Dean!!! 
Wish I would have gone out...too dang tired though 
I FINALLY got to ride (race) Ryan's Busa at Jax...6.36 and 6.36 @ 116+  
It's got at least a tenth to tenth and a half left in her (me)...
Way to go Dean...I'm so glad you made it there...
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RAC4IT
Needs a job
Bergie
Posts: 3009
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posted September 12, 2002 11:33 AM
Way to go! 8.anything is no joke on a streetbike, congrats!
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ZRXDean
Needs a job
Posts: 2225
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posted September 12, 2002 01:17 PM
Thanks guys, I've been looking forward to this for a while. New goal: 160mph
Kev I couldn't believe the 1/8 mph on the last run - I came out hard trying to get a better 60 and slipped the chit out of the clutch - got to WOT earlier than before, plus I upped the start % a bit. Woohoo! Sorry you weren't there- I knew you'd be psyched. Good air last night, and no wind. Nice job with the B-B-Busa, has Ryan run it yet?? How is the dry kit install coming? I need some competition
159.51 not too bad for a square-headlight breadbox, huh?
Dean
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your car is slow
Needs a job
Fuck Nitrous...Got Boost?
Posts: 4089
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posted September 12, 2002 01:24 PM
132 in the 8th..holy crap man!!!!!
already forgot what those lil jets felt like didntcha???
____________
Do not taunt happy fun ball!
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kcadby
Pro
Posts: 1733
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posted September 12, 2002 02:34 PM
YEEEup... Ryan ran 6.60s...best was 6.64 @114mph was fun for sure...
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RAC4IT
Needs a job
Bergie
Posts: 3009
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posted September 12, 2002 04:04 PM
what size hit is that have you tried it on the dyno yet?
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ZRXDean
Needs a job
Posts: 2225
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posted September 12, 2002 06:32 PM
Bergie, I haven't had these jets on the dyno, but the 26N/24G made 83hp/63ftlbs, so I guess the 24N/22G makes 65-70hp/50ftlbs. It's hard to judge from mph, because I'm not in it at 100% from the start, but 16mph would work out to a 57hp increase.
YCIS - small what? You mean the ones in there now?
6.60s is damn good for a guy who grew up on Har-Harleys - WTG Ryan.
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your car is slow
Needs a job
Fuck Nitrous...Got Boost?
Posts: 4089
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posted September 12, 2002 07:28 PM
hahaha....riiiight..thats what I meant dean
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Do not taunt happy fun ball!
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BA
Pro
Posts: 1592
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posted September 12, 2002 08:15 PM
DEAN - Congratufuckin'ations!
That's awesome man!! That mile an'hour in the 1/8th is KILLIN me!!
You must be all smiles when you hit the throttle!!!
No wonder I haven't read much from you lately! You been busy!
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INTRA
Expert Class
Posts: 307
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posted September 12, 2002 11:30 PM
 Edited By: INTRA on 13 Sep 2002 00:31
Holy shittttt!!!!!!On a ZRX,bad ass.
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ZRXDean
Needs a job
Posts: 2225
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posted September 13, 2002 07:06 AM
Thanks guys - I never planned on drag racing when I bought the ZRX, but I'm glad it turned out this way. Not too many of them at the track, that's for sure.
All you need is a little spray BA, hey that rhymes And YES - I am grinning and putting my finger on the button cuz it revs FAST when the nitrous hits. This must be what crack is like...
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HCcandy
Expert Class
Posts: 145
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posted September 26, 2002 10:50 AM
quote:
Thanks guys - I never planned on drag racing when I bought the ZRX, but I'm glad it turned out this way. Not too many of them at the track, that's for sure.
All you need is a little spray, hey that rhymes And YES - I am grinning and putting my finger on the button cuz it revs FAST when the nitrous hits. This must be what crack is like...
Good Luck Tonight, Hopefully the rain will stay away!
Team Green.
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