IS F (2008-2014) Discussion topics related to the IS F model

New 1/4 Mile Record

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Old 01-29-13, 01:31 PM
  #46  
Defratos
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Very nice times, and video thanks for sharing
Old 01-29-13, 01:31 PM
  #47  
JDMV8
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Wow great job, and congratulations!
Which rpm did you set the spray to cut off at?
Old 01-29-13, 01:34 PM
  #48  
MRxSLAYx
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Originally Posted by Just F Me
so what's up with the negativity last time? i don't see how anyone can be negative about a nice ET like this?
Glad were past it now.
Old 01-29-13, 01:40 PM
  #49  
SeanGTS
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Why do you say the clutch had issues? Was it slipping?
Old 01-29-13, 01:42 PM
  #50  
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All that time on nagtroc got you to the speeds of some of those guys! Very nice!
Old 01-29-13, 01:49 PM
  #51  
Gearbangin
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my old car trapped 133 and went 10.7. congrats.
Old 01-29-13, 07:57 PM
  #52  
ToothDoc
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Congrats on the awesome time/trap!!!! 133 mph is really FLYING and now you are running with the big dogs!!!!
Old 01-30-13, 01:04 AM
  #53  
Rider
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Felt clutch was slipping because there was a slight delay between shifts.
Thanks again for the congrats!
Old 01-30-13, 09:36 AM
  #54  
Dv8tion388
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With the way your shooting nitrous now a 1.7 60ft which is the lowest short time recorded on an IS-F with drag radials, should yield you a 10.80 at lower MPH.
I would, shoot less nitrous off the line in 1-2 gears and ramp it to full power in 3rd, using a progressvie controller like Staman mentioned. This should get you a 1.5-1.7 short time and get you a 130+trap,good for a mid to low 10 sec time.
Slay nailed what I was saying, Im guessing this direct port is easily topping a 250shot to get that sort of MPH. A 250 shot may sound extreme but it really isnt for a factory built 5.0 V8. I would say its more extreme, or ballzy to subject the stock trans to that abuse. They may work great but the up/down shifting solenoids have busted on these trans with less tq.

~Dv8
Old 01-30-13, 10:04 AM
  #55  
Joe Z
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Originally Posted by Rider
Video of the Pass:
It was done on Michelin PSS 275/30/19s - Full Weight. Could prolly hit 10s with DR's and a better 60ft. Im most impressed with the trap speed! should have seen 10s with a 133mph trap but traction is a killer! anyways enjoy

http://youtu.be/bjAGy4iSdO0
Originally Posted by Rider
Sure,
- Custom NX direct port NOS system by Titan Motorsport
- Custom Ported Intake Manifold and Throttle Bodies by Wilson
- I/H/E

Congrats Again...!!!!

Care to give more build details on all of the mods??

Also, which brand Intake/Header/Exhaust setup?? ( I think I know the answers)

Regards,

~ Joe Z
Old 01-30-13, 11:00 AM
  #56  
Rider
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JoeZ Exhaust / Injen Intake / Sikky Headers.
Old 01-31-13, 09:49 AM
  #57  
staman
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Originally Posted by Dv8tion388
With the way your shooting nitrous now a 1.7 60ft which is the lowest short time recorded on an IS-F with drag radials, should yield you a 10.80 at lower MPH.
I would, shoot less nitrous off the line in 1-2 gears and ramp it to full power in 3rd, using a progressvie controller like Staman mentioned. This should get you a 1.5-1.7 short time and get you a 130+trap,good for a mid to low 10 sec time.
Slay nailed what I was saying, Im guessing this direct port is easily topping a 250shot to get that sort of MPH. A 250 shot may sound extreme but it really isnt for a factory built 5.0 V8. I would say its more extreme, or ballzy to subject the stock trans to that abuse. They may work great but the up/down shifting solenoids have busted on these trans with less tq.

~Dv8
Yeah I agree. Id be a lot more worried about the transmission and the rear differential than the engine internals, especially in a drag scenario. The ISF has a tough V8 so i wouldnt worry about the rods or the heads etc...What I would worry about is the detonation and the timing with 250 shot. You can probably stave off the detonantion with race gas and colder plugs but I don't see how to solve the timing issue. The timing can be retarded but apparently the F ecu immediately changes it back. I havent tried personally. Slay, rider, dv8, what are you guys doing about the timing.....
Old 01-31-13, 10:57 AM
  #58  
MRxSLAYx
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Originally Posted by staman
Yeah I agree. Id be a lot more worried about the transmission and the rear differential than the engine internals, especially in a drag scenario. The ISF has a tough V8 so i wouldnt worry about the rods or the heads etc...What I would worry about is the detonation and the timing with 250 shot. You can probably stave off the detonantion with race gas and colder plugs but I don't see how to solve the timing issue. The timing can be retarded but apparently the F ecu immediately changes it back. I havent tried personally. Slay, rider, dv8, what are you guys doing about the timing.....
Building my motor. Timing hasn't been a problem yet ... motor doesn't run much timing to begin with.
Old 01-31-13, 01:14 PM
  #59  
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Having driven extensively an ISF with and without LSD, I'm sure the slipping that you feel is the LSD. Post-LSD ISFs might be faster than pre-LSD ones around a road course, but not at the drag strip. I hate that "delay" or "slipping" feel that you refer to, I have it on my 2012 and never had on my 2008.
Old 01-31-13, 04:16 PM
  #60  
Dv8tion388
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I wouldnt pay much attention to the pre lsd diff. it seems pretty stout and i didnt pull any one leggers.

I never ventured higher than 175, and that was on the street. I was going to run it at the track but, I got the GT-R instead. I never ran into any issues other than having to refill the bottle. Best way to describe the ISF on nitorus is smooth-fast-with an awesome tone.

I'd love to race me some Slay in GT-R come April I know you like beating them in the F.

~Dv8


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