LT1-LT4 Modifications 1993-97 Gen II Small Block V8

2 stages of nitrous on my lt1 wet and dry

Thread Tools
 
Search this Thread
 
Old 02-22-2009, 07:06 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (5)
 
pyro719's Avatar
 
Join Date: Aug 2007
Location: colorado springs Elevation: 6035 ft
Posts: 1,053
Likes: 0
Received 1 Like on 1 Post

Default 2 stages of nitrous on my lt1 wet and dry

I didnt get any feedback in the nitrous section so I though my lt1 could help me out. Im running the zex dry kit right now with a 100rwhp shot. I want to add another kit to spray another 100 shot but this kit will be a nitrous express wet kit. Will this work?
Old 02-22-2009, 08:17 PM
  #2  
11 Second Club
iTrader: (1)
 
96capricemgr's Avatar
 
Join Date: Sep 2004
Posts: 11,975
Likes: 0
Received 12 Likes on 12 Posts

Default

With your mod list it is unlikely a full 200 worth will be worthwhile over a 150-175, if the heads/cam/exhaust are not up to the task you reach a point where more nitrous does not really make the car faster.

Tuning the wet kit will be a bastard if you expect to tap into the existing fuel system as jetting will be all fouled up by the jacked fuel pressure the dry kit uses.

If you do this I would recommend a seperate fuel system for the wet shot.
Old 02-22-2009, 08:55 PM
  #3  
TECH Fanatic
Thread Starter
iTrader: (5)
 
pyro719's Avatar
 
Join Date: Aug 2007
Location: colorado springs Elevation: 6035 ft
Posts: 1,053
Likes: 0
Received 1 Like on 1 Post

Default

96capricemgr Thanks for the input. I didnt even think about the elevated fuel pressure on the wet kit. I think ill just sell the zex kit and go with a nice wet kit. You think a 200 kit wont make any more power than a 150 shot on my car?
Old 02-22-2009, 09:15 PM
  #4  
11 Second Club
iTrader: (1)
 
96capricemgr's Avatar
 
Join Date: Sep 2004
Posts: 11,975
Likes: 0
Received 12 Likes on 12 Posts

Default

Not without good heads.

Known a few guys that maxxed out between 150-175 and saw no additional gain with a 200 shot.

Then again maybe at elevation like you appear to be you might be able to get away with a little more since the engine is getting less air.
Old 02-22-2009, 10:19 PM
  #5  
TECH Veteran
iTrader: (246)
 
robsquikz28's Avatar
 
Join Date: Mar 2008
Location: Chicago/Crown point
Posts: 4,987
Received 0 Likes on 0 Posts

Default

FIRST of all zex rates there kit at the engine so a 125 is like getting 75 to the tires... secondly the wet kit by nx will rate theres at the tires so if you do spray it with the zex kit with the 125 out the gate you can spray it with the nx....but i would spray it with 125 out the whole with the nx then once ur in second gear spray the dry shot 100 only and it can be done but you will need to tune for this or atleast get a retard box for both shots.....and let me tell you a 200 shot you will feel...
Old 02-23-2009, 03:58 AM
  #6  
TECH Senior Member
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,130
Likes: 0
Received 4 Likes on 4 Posts

Default

Was that 14.0 spraying?
Old 02-23-2009, 08:16 AM
  #7  
TECH Apprentice
 
SHDY 5.7's Avatar
 
Join Date: Oct 2008
Location: Aurora Ill
Posts: 324
Likes: 0
Received 0 Likes on 0 Posts
Default

U can run both kits on that car. Use thew wet system outta the hole,then throw the dry on at the 60 mark.

Ull love it.
Old 02-23-2009, 08:51 AM
  #8  
12 Second Club
iTrader: (21)
 
derekderek's Avatar
 
Join Date: Jan 2007
Location: Dothan AL for now
Posts: 404
Likes: 0
Received 0 Likes on 0 Posts
Default

Go both dry shots and run a HSW Interface & Microedge to control the fuel, timing and when to bring in the second shot. I sent my pcm out to get tuned to allow the Interface to take out more timing. Of course you will need bigger injectors but I think it is worth it. Interface will let you adjust for different size shots and allow you to gradually bump up the shot to what you like.

In March I am heading to PMP for test and tune should have my car up by then I just finished the tranny swap. You should head out there to I think the main thing the shot will depend on is how much you can spray out of the hole with traction. Then bring the second shot in high in the rpm band for less stress on the engine should be fun times. Just run as high octane as you can Laniers sells all types of race gas.
Old 02-23-2009, 09:55 AM
  #9  
TECH Fanatic
Thread Starter
iTrader: (5)
 
pyro719's Avatar
 
Join Date: Aug 2007
Location: colorado springs Elevation: 6035 ft
Posts: 1,053
Likes: 0
Received 1 Like on 1 Post

Default

I would love to run my zex kit and NX wet kit but as 96capricemgr said, The fuel pressure from the zex kit will be around 80 to 90 psi when the zex kit hits, so The jetting will be all screwed up on the wet kit when the zex kit hits.
Old 02-23-2009, 01:38 PM
  #10  
12 Second Club
iTrader: (21)
 
derekderek's Avatar
 
Join Date: Jan 2007
Location: Dothan AL for now
Posts: 404
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by pyro719
I would love to run my zex kit and NX wet kit but as 96capricemgr said, The fuel pressure from the zex kit will be around 80 to 90 psi when the zex kit hits, so The jetting will be all screwed up on the wet kit when the zex kit hits.


That is why I say go with the HSW Interface so you wont have to jack up the fuel pressure. The interface will compensate for the extra fuel and keep stock fuel pressure.
Old 02-23-2009, 01:42 PM
  #11  
TECH Fanatic
Thread Starter
iTrader: (5)
 
pyro719's Avatar
 
Join Date: Aug 2007
Location: colorado springs Elevation: 6035 ft
Posts: 1,053
Likes: 0
Received 1 Like on 1 Post

Default

Im just gonna sell the zex kit and go with a nice 150 wet shot.
Old 02-23-2009, 01:46 PM
  #12  
12 Second Club
iTrader: (21)
 
derekderek's Avatar
 
Join Date: Jan 2007
Location: Dothan AL for now
Posts: 404
Likes: 0
Received 0 Likes on 0 Posts
Default

Yea that sounds pretty good I will give you a call later on today I know someone with a killer deal on a Zex wet kit 2 bottles for 200$ brand new if you want it.
Old 02-23-2009, 02:17 PM
  #13  
TECH Fanatic
Thread Starter
iTrader: (5)
 
pyro719's Avatar
 
Join Date: Aug 2007
Location: colorado springs Elevation: 6035 ft
Posts: 1,053
Likes: 0
Received 1 Like on 1 Post

Default

Im tryin to get away from the zex stuff bro. Im getting a NX wet kit tonight. So im selling my dry zex kit for $250
Old 02-23-2009, 05:16 PM
  #14  
TECH Regular
iTrader: (4)
 
projekt70chevelle's Avatar
 
Join Date: Mar 2006
Posts: 479
Likes: 0
Received 0 Likes on 0 Posts
Default

^^^ Interested in both of those kits. PM me with more details and pics/part numbers if you have them.


Anyways, you guys keep talking about raised fuel pressure messing with the jets... I was planning on running a 125-150 wet shot. I already have it set up, just have to trace down this missfire and a couple other mods to install before I do anything else with it. The thing is, I was planning on buying the full racetronix fuel pump kit to bump my lack of pressure with my failing stocker. Now I have the fuel line from the wet kit running right off the schrader valve to the solenoid (actual valve core will be removed to allow the fuel to flow). Am I going to run into problems with this set up?
Old 02-23-2009, 06:47 PM
  #15  
12 Second Club
iTrader: (21)
 
derekderek's Avatar
 
Join Date: Jan 2007
Location: Dothan AL for now
Posts: 404
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by projekt70chevelle
^^^ Interested in both of those kits. PM me with more details and pics/part numbers if you have them.


Anyways, you guys keep talking about raised fuel pressure messing with the jets... I was planning on running a 125-150 wet shot. I already have it set up, just have to trace down this missfire and a couple other mods to install before I do anything else with it. The thing is, I was planning on buying the full racetronix fuel pump kit to bump my lack of pressure with my failing stocker. Now I have the fuel line from the wet kit running right off the schrader valve to the solenoid (actual valve core will be removed to allow the fuel to flow). Am I going to run into problems with this set up?


No you wont run into any problems because you will be running a wet shot. When you run a dry shot one of the ways the system adds more fuel is to jack up the fuel pressure and make the injectors spray more. With a wet shot you are introducing the fuel through the nozzle instead of the injectors so no need to raise the fuel pressure.

You are doing a good thing by upgrading your pump its good insurance you maintain steady fuel pressure and don't go lean.



Quick Reply: 2 stages of nitrous on my lt1 wet and dry



All times are GMT -5. The time now is 12:26 PM.