rat7761
Member
- Joined
- Jul 28, 2008
- Messages
- 563
- Reaction score
- 2
NOS single fogger wet system.
Teaser...
I've been thinking of an easy way to try and get into the 12s. An NOS single fogger came to mind. I've worked with nitrous before so I'm not completely clueless when it comes to spray. Has anyone ran a single fogger before in an X-Runner? I'm wondering why more N/A guys aren't running some sort of nitrous system? From my experience, nitrous is the cheap and easy way to go fast. Feel free to bash me as necessary. No offense will be taken. :smile: Here are my thoughts/ideas:
1.) The extra fuel would come from a Walbro 255 LPH fuel pump. I would probably tap into the main fuel feed line (instead of the rail) like how the URD 7th injector kit does for the 5VZ for the extra fuel for the fogger. The fogger nozzle would be placed ahead of the throttle body for best atomization.
2.) The micro switch will have to be off of the throttle pedal itself since the 1GR is throttle by wire. A hand controlled button would be too dangerous. A relay should be used when wiring a nitrous system because the nitrous solenoids draw a lot of amps.
3.) The only "tuning" that would really be involved would be checking the plugs after every pass to check for signs of detonation/lean condition (peppering of the plugs). If this occurs, I would reduce the nitrous jet accordingly since adding more fuel (increasing the fuel jet) may cause more problems. Bottle pressure would be around 950 PSI. I would start off with a small shot. I think a single fogger for a V6 can be adjusted in 35, 50, 80 increments but don't quote me on that. I wouldn't go over a 50 shot...or so I say. Colder plugs may be necessary. NOS would need to be contacted for the proper jetting. Unleaded race fuel or octane booster would be a good idea.
4.) The bottle would be mounted in the bed since if a bottle is located in the driver's compartment, a blow down tube would need to be added to the bottle to be NHRA compliant. A nitrous purge is handy not just to bleed the feed line of air but it can be used to bleed the feed line of nitrous pressure after a run when the bottle is closed. You don't want to leave pressure in the system if you're not using it. It will prematurely wear out the solenoids.
5.) I would run 26X10 Mickey Thompson ET Drag slicks. If more guys did this, we would probably have a bunch of guys in the 12s already...or closer to it. Haven't done the research yet but if a Detroit Locker or the easier to install Powertrax Lock-Rite are available, traction would be better than with the stock LSD. Streetablility will be sacrificed though. Noise in turns from the locker disengaging and fully locked rear diff under acceleration. I could go into the subject of 3.73 gears but I won't.
6.) A driveshaft loop within 6" of the forward most U-joint would be required. If the tech inspectors really want to be picky, they would require two loops since the X-Runner has a 2-piece driveshaft.
7.) Of course a Snell approved helmet is a given.
8.) Timing cannot be controlled w/o adding electronics so I would not be able to retard the timing as necessary.
9.) A wideband gauge with the A/F sensor mounted before all catalytic converters would be a wise choice to monitor the air/fuel ratio.
10.) My bench racing ET calculator that has been very accurate with my X-Runner spits out a 13.32 @ 102.26 MPH with the 50 shot on my truck (with the current setup) so I would still be short of the 12s. An 80 shot would net a 13.05 @ 104.41 MPH. Wow, getting into the 12s is tough. More nitrous....Someone needs to find the limit of a stock 1GR bottom end.
This is all in the fun of bench racing though so it may be faster or slower in the real world.
I'm not dead set on doing this but I am thinking about it. I'm interested in hearing feedback from guys who have put their X on the bottle. Thanks in advance!
Last edited:
