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14 Second 1/4 Mile Times Naturally Aspirated

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Old Mar 3, 2015 | 06:06 AM
  #1  
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14 Second 1/4 Mile Times Naturally Aspirated

Meh...can't make this go away. Can't stop thinking about it. Need to be able to hang with stock integra type R's and late model Honda Civic Si's.

Our Fits can do it. It must be done. Any tips and suggestions are appreciated.

So far....mods (or incoming mods) in my sig.

As far as weight reduction, rear seats removed, lighter/wheel tire combo and spare tire removed, those are covered.

Gonna change exhaust back to full mandrel bent 2" piping all the way back. If J's racing and Spoon (Slightly smaller than 2") is taking this route, they may be on to something. I'm just waiting for the 2" exhaust piece to arrive.

Two 14.9's in the 1/4 and it'll be time to pop the champagne bottle. Again, taking in any suggestions. Not just power wise. Weight Reduction! Aerodynamics! Reduced friction between components. Better traction! Reduced Rotational mass! Yes.........anything to help with forward acceleration. This is working with the current engine and naturally aspirated. No nitrous! No turbo/supercharger. No engine swap! Thanks!
 

Last edited by Myxalplyx; Apr 5, 2015 at 11:19 PM.
Old Apr 5, 2015 | 01:36 PM
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**Redid this post/thread**

I can't let this go.... Sigh!
 
Old Apr 7, 2015 | 01:48 AM
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I think a tenth or two is still in that 60'. With my AutoX setup (gross amounts of static negative camber) I'm regularly in the low 2.3xx's and I likely have less power! Have you done anything suspension wise to firm the rear to stop the weight shift in launch? With the Ktuner do you have a "rev launch?"
 
Old Apr 7, 2015 | 07:04 AM
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Originally Posted by TPColgett
I think a tenth or two is still in that 60'. With my AutoX setup (gross amounts of static negative camber) I'm regularly in the low 2.3xx's and I likely have less power! Have you done anything suspension wise to firm the rear to stop the weight shift in launch? With the Ktuner do you have a "rev launch?"
I have not done anything with the suspension yet. I purchased this coil spring booster but it doesn't seem like a snug fit and the passenger side rubber piece contacts my exhaust as it is currently setup.


I like your idea though. My 60fts are in the 2.4's with a rare 2.3 thrown in the mix every now and then.


Ktuner hasn't figured out the 2015 ECU yet. That is still a work in progress.
 
Old Feb 25, 2016 | 10:33 PM
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**Update**

Cams hurt me a bit.

The lightweight NST pulley brought me back to where I was.


Some recent adjustments to test with ignition timing advanced a few degrees and a slight, tiny, tiny bump in peak rpm.

Maf g/s has been observed to be up by 5g/s or so.
Intake Psi is up by .2psi from before.

Track is scheduled to open Friday but may be too cold out. Last runs I did was in the 15.4-15.5 range.

Staying focused! Got to do this....... I feel this platform has got the guts to do it while naturally aspirated.


There has been some progress with Ktuner and the older models as well. Things are looking up. Hoping to hear from you guys.
 
Old Mar 2, 2016 | 12:18 PM
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Looking forward to your results
 
Old Mar 2, 2016 | 02:20 PM
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For what octane is your tune set up? With a relatively high compression ratio of 11.5:1, you may benefit from a mixture of 93 plus race gas, seeing as you're at a race track.
 
Old Mar 2, 2016 | 02:34 PM
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Originally Posted by lunch box
For what octane is your tune set up? With a relatively high compression ratio of 11.5:1, you may benefit from a mixture of 93 plus race gas, seeing as you're at a race track.

92 octane! Always!
 
Old Mar 2, 2016 | 03:34 PM
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Originally Posted by Myxalplyx
**Update**

Cams hurt me a bit.

The lightweight NST pulley brought me back to where I was.


Some recent adjustments to test with ignition timing advanced a few degrees and a slight, tiny, tiny bump in peak rpm.

Maf g/s has been observed to be up by 5g/s or so.
Intake Psi is up by .2psi from before.

Track is scheduled to open Friday but may be too cold out. Last runs I did was in the 15.4-15.5 range.

Staying focused! Got to do this....... I feel this platform has got the guts to do it while naturally aspirated.


There has been some progress with Ktuner and the older models as well. Things are looking up. Hoping to hear from you guys.
Man those pullies aren't cheap!
 
Old Mar 2, 2016 | 07:49 PM
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Just a tidbit I got from spending a few days with Sunoco fuel engineers at a Indycar race...
(I was helping manage delivery to the teams) NO pressure here just passing along what I was told when we were waiting for requests... (You end up sitting around a lot at pro races....)

Dont mix race gas and pump gas. Its a lot cause..

The reason is that pump gas blends are dynamic, they change the chemical packages all the time because sometimes one is cheaper or easier to get. Fuel additives can be either additive (Gain octane) subtractive (lose octane) or do nothing. They had done a lot of random testing buying a gallon of pump and mixing it with a gallon of race gas and only about 1 in7 actually ended up at a higher octane than the pump gas started out with. most did nothing , some actually dropped the octane to a much lower number. Some additives blend to nasty combinations that are corrosive or become tacky and foul filters and such over time.

The pump gas has an additive that helps prevent evaporation, race fuel does not. That among everything else is why you use race gas, it vaporizes faster and becomes a nearly true gas in the intake manifold. Thats why occasionally you get a nice felt boost in power when you home mix, you get lucky and the race gas reduces the vapor pressure of the fuel and it distributes better in the system. Race gas also often uses an additive package that is not something they would use in a street car because of many factors (toxicity/Pollution/other unknowns)

YMMV-FWIW-Eplurbus Unum.
 
Old Mar 3, 2016 | 01:13 PM
  #11  
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Originally Posted by dwtaylorpdx
Just a tidbit I got from spending a few days with Sunoco fuel engineers at a Indycar race...
(I was helping manage delivery to the teams) NO pressure here just passing along what I was told when we were waiting for requests... (You end up sitting around a lot at pro races....)

Dont mix race gas and pump gas. Its a lot cause..

The reason is that pump gas blends are dynamic, they change the chemical packages all the time because sometimes one is cheaper or easier to get. Fuel additives can be either additive (Gain octane) subtractive (lose octane) or do nothing. They had done a lot of random testing buying a gallon of pump and mixing it with a gallon of race gas and only about 1 in7 actually ended up at a higher octane than the pump gas started out with. most did nothing , some actually dropped the octane to a much lower number. Some additives blend to nasty combinations that are corrosive or become tacky and foul filters and such over time.

The pump gas has an additive that helps prevent evaporation, race fuel does not. That among everything else is why you use race gas, it vaporizes faster and becomes a nearly true gas in the intake manifold. Thats why occasionally you get a nice felt boost in power when you home mix, you get lucky and the race gas reduces the vapor pressure of the fuel and it distributes better in the system. Race gas also often uses an additive package that is not something they would use in a street car because of many factors (toxicity/Pollution/other unknowns)

YMMV-FWIW-Eplurbus Unum.
I see. So adding a bunch of octane boosters is the best choice, right?
 
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