Coming soon...
Lexus Champion
Joined: Feb 2008
Posts: 2,448
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From: Japan
The reason we went with 245/40/18 is because it's close to the stock size but just a tad shorter which equals quicker acceleration without incurring an extra gear change. There is no benefit in going with a taller diameter tire or anything wider with the grip the 245 width drag tires offer.
Check this out.
Stock:
With 245/35/18:
With 245/40/18:
Last edited by caymandive; Jul 27, 2009 at 05:04 AM.
Thread Starter
Lexus Test Driver
Joined: Oct 2008
Posts: 1,099
Likes: 0
From: FL-561,352
Just an FYI, suffered "Catastrophic Solenoid Failure" .. heh heh. Apparently NOS make notoriously **** solenoids. After about 20~ total uses, my (NOS) nitrous solenoid ate itself along with the NOS purge. The NX systems purge was the only one still working (except the NOS fuel solenoid)
Needless to say, all the NOS solenoids are being (well, already have been!) removed. Having some other stuff done as well (bottle mount changes, oxygen sensor install (finally!)....
If anyone has any good suggestions on bottle warmers please let me know. I was looking at NX's fire & ice product but it is "out of production".....
Needless to say, all the NOS solenoids are being (well, already have been!) removed. Having some other stuff done as well (bottle mount changes, oxygen sensor install (finally!)....
If anyone has any good suggestions on bottle warmers please let me know. I was looking at NX's fire & ice product but it is "out of production".....
Thread Starter
Lexus Test Driver
Joined: Oct 2008
Posts: 1,099
Likes: 0
From: FL-561,352
All NOS solenoids have been removed. NX all the way for now. Bracket mounts have been redone and new, better brackets are being installed. Bottle warmers arrive tomorrow... getting close!
Thread Starter
Lexus Test Driver
Joined: Oct 2008
Posts: 1,099
Likes: 0
From: FL-561,352
Something I came across a few days ago... and kinda knew already:
http://www.dragstuff.com/techarticle...e-heaters.html
http://www.dragstuff.com/techarticle...e-heaters.html
Propane Torch
Even though heating bottles with a propane torch is a popular method, it's dangerous and can get people hurt.
Aluminum starts to melt around 800 degrees and applying that much heat for too long in any one spot can weaken the bottle causing it to rupture. Think!!! We're talking about an aluminum (which melts easily) nitrous bottle filled with an oxidizer at high pressures and applying a torch (filled with fuel) to it - not a wise idea. Don't even consider using a torch on a carbon fiber bottle.
There are more reasons, besides the obvious safety issues, to not use a torch to heat your bottles. Many tracks have outlawed this practice and some sanctioning bodies such as IHRA, AMA/Pro-Star have as outlawed it as well. Those telltale scorch marks on a bottle may also prevent you from getting the bottle refilled at many locations.
Even though heating bottles with a propane torch is a popular method, it's dangerous and can get people hurt.
Aluminum starts to melt around 800 degrees and applying that much heat for too long in any one spot can weaken the bottle causing it to rupture. Think!!! We're talking about an aluminum (which melts easily) nitrous bottle filled with an oxidizer at high pressures and applying a torch (filled with fuel) to it - not a wise idea. Don't even consider using a torch on a carbon fiber bottle.
There are more reasons, besides the obvious safety issues, to not use a torch to heat your bottles. Many tracks have outlawed this practice and some sanctioning bodies such as IHRA, AMA/Pro-Star have as outlawed it as well. Those telltale scorch marks on a bottle may also prevent you from getting the bottle refilled at many locations.
Lexus Fanatic
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Joined: Nov 2004
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From: Under an IS F since 2008
Glad your replacing the failed parts... with 
Any issues arise with the Engine due to the failed parts??
Where you able to get anymore drag runs in with the NOS, when it was working?
Any issues arise with the Engine due to the failed parts??
Where you able to get anymore drag runs in with the NOS, when it was working?
Thread Starter
Lexus Test Driver
Joined: Oct 2008
Posts: 1,099
Likes: 0
From: FL-561,352
No, there are no apparent signs of engine damage from the NOS solenoid failure:
Basically, the solenoids NOS make are ****, especially when used in conjuction with a progressive controller. It eats them in a handful of runs. Pretty disappointing. Even my PURGE solenoid disintigrated, apparently they can't handle anything more than 975PSI.
Thread Starter
Lexus Test Driver
Joined: Oct 2008
Posts: 1,099
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From: FL-561,352
So.. an update:
I was previously running on a single NOS nitrous solenoid and a single NOS fuel solenoid, and two more nitrous solenoids: one NOS purge, one NX purge. Guess which was the ONLY piece that lasted? The NX.
The above configuration has been replaced completely, i now have (single stage, progressive):
2x NX nitrous solenoids
2x NX fuel solenoids
2x NX nitrous purges
The whole system was re-jetted and re-tuned. All I will say right now is 5XX HP and 5XX TQ!!!!!
I have a show this weekend (Saturday) so I will likely get pictures, etc, from there and do a more detailed writeup and share actual dyno numbers. I also am hoping to get some track runs in.
I only got to use the system for a little bit today (got it back late last night), but it freaking MOVES.. can't wait to track it!
I was previously running on a single NOS nitrous solenoid and a single NOS fuel solenoid, and two more nitrous solenoids: one NOS purge, one NX purge. Guess which was the ONLY piece that lasted? The NX.
The above configuration has been replaced completely, i now have (single stage, progressive):
2x NX nitrous solenoids
2x NX fuel solenoids
2x NX nitrous purges
The whole system was re-jetted and re-tuned. All I will say right now is 5XX HP and 5XX TQ!!!!!
I have a show this weekend (Saturday) so I will likely get pictures, etc, from there and do a more detailed writeup and share actual dyno numbers. I also am hoping to get some track runs in.
I only got to use the system for a little bit today (got it back late last night), but it freaking MOVES.. can't wait to track it!
I can't wait for runs and times along with video would be nice. Way to go. sounds scary fast. Now just make sure you have grip when you do runs. That seems to be the biggest problem when adding that much HP and TQ to these cars well to any cars for that matter.