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Timeslip analysis assistance

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Old Oct 6, 2003 | 11:34 AM
  #1  
Austin's Avatar
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From: Sears Point, CA
Default Timeslip analysis assistance

So I headed off to Sacramento Raceway over the weekend for their CMI event, I had ~17 runs over the two days...half of the first days runs were me incorrectly setting the Hondata vtec and launch control so I only had ~9 clean runs that weren't involved with the bracket racing, here are an interesting selection of the runs that I had.

Here is a link to the most recent dyno plots and my modifications:
https://honda-tech.com/zerothread?id=635523

2001 Type-R
weight ~2,700 lbs(I'm not all that light)
~64,500 miles
Mobil1 has ~2,500 miles, 6 autocross runs, and 24 drag runs(before the event)

I used the BFG drag radials, the newer ones, inflated to 14/15psi warm/hot, using the Hondata launch control set at ~5,300rpm.

Here are the times, thoughts and opinions please...

T1 2.198
T2 5.882
T3 8.965
MPH 79.973
T4 11.624
E.T. 13.891
MPH 101.405

T1 2.184
T2 5.880
T3 8.968
MPH 79.868
T4 11.631
E.T. 13.897
MPH 101.505

T1 2.125
T2 5.834
T3 8.932
MPH 79.573
T4 11.612
E.T. 13.898
MPH 100.407

T1 2.106
T2 5.803
T3 8.888
MPH 79.077
T4 11.557
E.T. 13.832
MPH 98.476

T1 2.098
T2 5.795
T3 8.870
MPH 79.011
T4 11.525
E.T. 13.791
MPH 98.611
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Old Oct 6, 2003 | 12:45 PM
  #2  
Downey's Avatar
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From: Mountain View
Default Re: Timeslip analysis assistance (Austin)

all i can say is your damn consistant!! good job Austin!





another local..
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Old Oct 6, 2003 | 12:47 PM
  #3  
TwoRedEGgs's Avatar
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From: Redstone Motors, Ca, USA
Default Re: Timeslip analysis assistance (Austin)

from me Austin !! good job
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Old Oct 6, 2003 | 12:53 PM
  #4  
Evil DOHC's Avatar
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From: Bada BING, NJ, USA
Default Re: Timeslip analysis assistance (TwoRedEGgs)

Hey Austin,
If I think I remember correctly, you dynoed your car before. What were your numbers? The reason I am asking is that I recently tunned my friends ITR on the street and it is running similar times.

https://honda-tech.com/zerothread?id=639483

Dont mean to intrude on your thread, but I just needed some kind of base hp number because you guys are running similar times and mph's.

EVIL
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Old Oct 6, 2003 | 12:58 PM
  #5  
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Default Re: Timeslip analysis assistance (Evil DOHC)

i think Austins numbers are 184/134
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Old Oct 6, 2003 | 01:33 PM
  #6  
Austin's Avatar
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From: Sears Point, CA
Default Re: Timeslip analysis assistance (Evil DOHC)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Evil DOHC &raquo;</TD></TR><TR><TD CLASS="quote">Hey Austin,
If I think I remember correctly, you dynoed your car before. What were your numbers? The reason I am asking is that I recently tunned my friends ITR on the street and it is running similar times.

https://honda-tech.com/zerothread?id=639483

Dont mean to intrude on your thread, but I just needed some kind of base hp number because you guys are running similar times and mph's.

EVIL </TD></TR></TABLE>

187/134.5 is what I dynoed at last week when I did the AEBS intake manifold test, the BFG drag radials were finally starting to hook up, but were spinning through most of first gear...I'm getting more and more convinced that I need to get some slicks to improve upon my times.

Austin

TwoRedEGs...I heard that someone got their hood popped...that sucks big time
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Old Oct 6, 2003 | 02:12 PM
  #7  
Mike M's Avatar
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From: Boston, MA, USA
Default Re: Timeslip analysis assistance (Downey)

Congrats, Keep up the good work
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Old Oct 6, 2003 | 05:34 PM
  #8  
EG(6)SR's Avatar
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From: Bay Area
Default Re: Timeslip analysis assistance (Austin)

Dam, sounds like you got a lot of runs in. Most of the time I get lucky to get 4 runs on Sat test and tune. Dammit, should have gone.

Nice times, very respectable on street tires. You could probably get a bit lower, but looks like your real close to hitting the brick wall with those street tires. Good times
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Old Oct 6, 2003 | 07:35 PM
  #9  
capcon83's Avatar
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From: SaCrAmEnTo, CaLiFoRnIa, U.S.A
Default Re: Timeslip analysis assistance (Downey)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Downey &raquo;</TD></TR><TR><TD CLASS="quote">
another local..
</TD></TR></TABLE>
i wonder whose car that is..........let me think oh thats mine
my time wasnt all that great like austin i only managed to hit a 14.6 with street tires
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Old Oct 7, 2003 | 05:37 AM
  #10  
Lip's Avatar
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From: Moorestown, NJ, USA
Default Re: Timeslip analysis assistance (Austin)

very consistant. here is a hint. heat those drag radials up buddy. they like to be really hot. what i did was heat em up real good in the box. after i do my burn out i sit for a sec..then do a tiny lower rpm drop clutch to see if they are sticky or slick. if sticky...get up to the line. if slippery? heated up a tick too much and just stage a little slower. maybe its more ritual...who knows...but works for me. nice job
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Old Oct 7, 2003 | 06:05 AM
  #11  
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Default Re: Timeslip analysis assistance (Lip)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lip &raquo;</TD></TR><TR><TD CLASS="quote">very consistant. </TD></TR></TABLE>

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Old Oct 7, 2003 | 06:54 AM
  #12  
SiR831's Avatar
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Default Re: Timeslip analysis assistance (Austin)

Austin,
I told you before to get some slicks and ditch those BFG's already. Good times though Did the new intake manifold make a big difference HP wise?
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Old Oct 7, 2003 | 08:17 AM
  #13  
Austin's Avatar
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From: Sears Point, CA
Default Re: Timeslip analysis assistance (Lip)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lip &raquo;</TD></TR><TR><TD CLASS="quote">very consistant. here is a hint. heat those drag radials up buddy. they like to be really hot. what i did was heat em up real good in the box. after i do my burn out i sit for a sec..then do a tiny lower rpm drop clutch to see if they are sticky or slick. if sticky...get up to the line. if slippery? heated up a tick too much and just stage a little slower. maybe its more ritual...who knows...but works for me. nice job</TD></TR></TABLE>

Exactly what I learned through trial and error, only took me 15 runs of various tire pressure, launch rpm, and burnout to get them just right...although I have a feeling that they're still not hot enough. After the NHRA event I went back through my notes and looked at every launch rpm, tire psi, and burnout that I used to find a pattern which, is why my 60' times dropped from the mid 2.2's to the low 2.1's.

Austin
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Old Oct 7, 2003 | 08:20 AM
  #14  
Austin's Avatar
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From: Sears Point, CA
Default Re: Timeslip analysis assistance (SiR831)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiR831 &raquo;</TD></TR><TR><TD CLASS="quote">Austin,
I told you before to get some slicks and ditch those BFG's already. Good times though Did the new intake manifold make a big difference HP wise? </TD></TR></TABLE>

I know that I need some slicks...if I'd won a part of the purse you can be sure that I would have purchased a nice set of slicks . I was ~.033 seconds off of $175 and a chance at $400 and $800

Here is the link to the manifold test that I did:
https://honda-tech.com/zerothread?id=635523
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Old Oct 7, 2003 | 08:22 PM
  #15  
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Default Re: Timeslip analysis assistance (Austin)

ya u were the one that elimiated me in the first round

look at ur time slip/ john
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Old Oct 7, 2003 | 08:59 PM
  #16  
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From: NJ, USA
Default Re: Timeslip analysis assistance (civic2003)

what happened to ur mph the last 2 runs?....it went down 3 mphbutu stillran the same times...thats kinda weird
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Old Oct 8, 2003 | 04:34 AM
  #17  
Lip's Avatar
Lip
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Default Re: Timeslip analysis assistance (DLOTYPER)

thats what happens when you hook up. you come out of the whole harder with less wheel spin. wheel spin most of the time will give you a higher mph
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Old Oct 8, 2003 | 08:20 AM
  #18  
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Default Re: Timeslip analysis assistance (Lip)

but his 60fts werent that much better to be losin 3mph
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Old Oct 8, 2003 | 09:30 AM
  #19  
turbo*s2k's Avatar
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Default Re: Timeslip analysis assistance (AllMoToRB18c)

Good Times Austin! Some slicks should knock that 60ft down to 1.8...
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Old Oct 8, 2003 | 09:33 AM
  #20  
Lip's Avatar
Lip
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Default Re: Timeslip analysis assistance (AllMoToRB18c)

it could be a head wind..it could be temp differences....it could be mis shifts...it could be clutch slipping...it could be tire spin going into next gear. it can be alot of things. its honestly not that many mph on a drag radial. now if its slicks...thats different. now your cutting that list in half.
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