Notices
Drag Racing Find out the best way to launch and see what kind of times other people are posting. No posting of street racing related stories!

Need help diagnosing my 1/4 time

Thread Tools
 
Search this Thread
 
Old Sep 18, 2008 | 09:33 AM
  #1  
Justindc2's Avatar
Thread Starter
Evolving Member
iTrader: (3)
 
Joined: Jul 2006
Posts: 219
Likes: 0
From: Chicago
Unhappy Need help diagnosing my 1/4 time

my mods are mbc @20, tbe, exedy clutch and a ams base flash... ive seen people with those mods in the registery and run mid to high 12s but im consistantly running 13.4 whicch is pretty much a stock 1/4 time. i shift at 7300ish and im near bottom of 4th gear when i cross the finish line.

my times

60' 1.95
13.7@101.61

60' 1.9
13.48@102.54

60' 1.848
13.475@101.63


is there something wrong with my car?? if i do end up getting a 1.6 or 1.7 60' my times wouldn't be significantly differernt right?? could it be i was on all season snow tires?? or does 2lbs more of boost make that big of a difference??
Reply
Old Sep 18, 2008 | 09:37 AM
  #2  
Blazing VIII's Avatar
Evolving Member
 
Joined: Aug 2007
Posts: 160
Likes: 0
From: Every where...
I would say you could be running high 12's, and your mph is really low. The 60 foots are not great either, but you should be trapping higher then that. Do a one over on the car, and boost leak test, you seem to be down on power.
Reply
Old Sep 18, 2008 | 11:20 AM
  #3  
Justindc2's Avatar
Thread Starter
Evolving Member
iTrader: (3)
 
Joined: Jul 2006
Posts: 219
Likes: 0
From: Chicago
bump
Reply
Old Sep 18, 2008 | 11:30 AM
  #4  
fromWRXtoEVO's Avatar
Evolved Member
iTrader: (18)
 
Joined: Sep 2004
Posts: 6,087
Likes: 5
From: Tucson
At that boost level range two more psi will make some significant difference. It if was a much higher boost levels(28 to 30psi) it wouldn't make that much difference on the stock turbo but 20 to 22psi will. As per the 60', yes, it will also be significant on your ET. Rule of thum 1 tenth on the 60'= 2 tenths on the ET.

Carlos
Reply
Old Sep 18, 2008 | 11:39 AM
  #5  
StevenStarke's Avatar
Evolved Member
iTrader: (77)
 
Joined: Aug 2007
Posts: 1,405
Likes: 0
From: Li, NY
every .1 in the 60ft will equal .2 in the 1/4.

for example: if you had ran 1.75 60ft, you would have ran 13.3 on ur first pass
Reply
Old Sep 18, 2008 | 11:47 AM
  #6  
Turbojunkie's Avatar
Evolved Member
iTrader: (21)
 
Joined: Dec 2004
Posts: 1,425
Likes: 0
From: nw
I would say two things. improve you 60' and shift sooner. with your mods your out of your power curve for sure at 7300-7400. shift at 7k. make a simple boost leak tester and do that 4 sure also. may find some power thier also.
Reply
Old Sep 18, 2008 | 11:48 AM
  #7  
Turbojunkie's Avatar
Evolved Member
iTrader: (21)
 
Joined: Dec 2004
Posts: 1,425
Likes: 0
From: nw
Originally Posted by Steve@NrgTech
every .1 in the 60ft will equal .2 in the 1/4.

for example: if you had ran 1.75 60ft, you would have ran 13.3 on ur first pass
sorry for off topic, but damn! the car in you avator is so f-ing hawt. more pics?
Reply
Old Sep 18, 2008 | 03:51 PM
  #8  
Justindc2's Avatar
Thread Starter
Evolving Member
iTrader: (3)
 
Joined: Jul 2006
Posts: 219
Likes: 0
From: Chicago
Originally Posted by Steve@NrgTech
every .1 in the 60ft will equal .2 in the 1/4.

for example: if you had ran 1.75 60ft, you would have ran 13.3 on ur first pass
still with a 1.75 60 ft that time still is around the time of a stock evo...
Reply
Old Sep 24, 2008 | 10:13 PM
  #9  
Q@EvoPowerMods's Avatar
Former Sponsor
iTrader: (23)
 
Joined: Jan 2007
Posts: 812
Likes: 0
From: In the Shop in Alabama
Work on lowering your 60 ft....1.6, 1.7..is attainable lower your tire pressure, however the all season tires do really hurt your trap speeds. And why not raise your boost levels? everyone I know runs 25lbs all day long no probs....just like most people an Evo will out drive our abilities...practice, practice, practice....
Reply
Old Sep 25, 2008 | 05:56 AM
  #10  
StreetThisEvo's Avatar
Evolved Member
iTrader: (48)
 
Joined: Dec 2006
Posts: 1,660
Likes: 1
From: Barbertucky, OH
1. Work on your 60. A decent 60 for a stockish Evo can still be in the 1.6's which would cut .3 - .4 tenths off your ET

2. Shift at around 6700-6800 rpm. You are shifting way to high for your setup. Power shifting will make you a little faster but from the looks of it you are still new and I would not try power shifting until you are more experienced at racing.

3. Work on shifting faster. Your mph is suffering because of slow shifts.


Hope this helps!
Reply
Old Sep 27, 2008 | 11:42 AM
  #11  
partyboy1122's Avatar
Evolved Member
iTrader: (16)
 
Joined: Aug 2007
Posts: 816
Likes: 0
From: Hudson, NH
I would turn up the boost.
Reply
Old Sep 27, 2008 | 05:03 PM
  #12  
redboosted05's Avatar
Evolving Member
iTrader: (3)
 
Joined: Jul 2007
Posts: 392
Likes: 0
From: Middletown, NY
yeah work on that 60' and play around where your shifting at. My buddy has an 03 that just had an apexi cat back and all season tires and stock everything else not tune nothing and ran a 13.0 at 100mph
Reply
Old Sep 27, 2008 | 05:32 PM
  #13  
BGevoIX's Avatar
Evolved Member
iTrader: (75)
 
Joined: Jul 2007
Posts: 515
Likes: 0
From: NorCal
As for being around a stock Evo time, you might be around a really good 05 stock evo time or a pretty descent 06 stock evo time. from what i've seen, the 03-04 run higher 13s in stock form. Practice does make a huge difference. Work on the launch, as the other's have mentioned. You can pick up some good time from that. Also, if you're running those mods and only trapping 101-102, I would believe your shifting might be a little slow. I would presume some 105-106 trap speeds should be attainable without much of an issue...and normally when your 60' is slower, your trap speed in relation to your ET will be higher. For example, with your 1.9 60' and your 13.7 @ 101 could turn into a 13.5 @ 100 w/ a 1.8 or 1.7 60 ' time.
Reply
Old Sep 30, 2008 | 08:51 AM
  #14  
Duh Panda's Avatar
Evolving Member
iTrader: (5)
 
Joined: Jun 2007
Posts: 423
Likes: 2
From: El Paso, Tx
maybe has to do with elevation?
Reply
Old Sep 30, 2008 | 09:01 AM
  #15  
boostedtres's Avatar
Evolved Member
iTrader: (4)
 
Joined: Jun 2008
Posts: 945
Likes: 0
From: Philly Burbs
shift sooner as above people have said. Im at 21lbs and i peak at 6150 so I try to shift around there. I imagine without bigger cams your way out of your power range slowing you down. i just started racing too and practice really does make perfect! good luck in the future
Reply



All times are GMT -7. The time now is 05:12 AM.