Even at 650psi bottle pressure. Need a damn heater

 

Glad to hear it works out for you. Stay away from the Holley (NOS) bottle heater. The stock thermometers on the heater are set too low (950psi or so). Doesn't one of the other systems actually monitor the true bottle pressure to determine what heat range is required????

 

Yeah the NX Heater goes off pressure. Im switching over to NX to, found a place here that will sell me the solenoids and rest of the items I need to convert.

 

You can also use the NX heater without the pressurestat, I usually wire mine manually so I can control the pressure manually when I am at the track. Don't think you can do that with the temp controlled ones so you are stuck at whatever temp they have it set at.

 

Cool!

 

Jime, what is the NX bottle heater pressure "tuned" to? Meaning, what is the pressure it tries to maintain. I just may hard-wire my bottle heater when I head off to the track. I am sick of this 900 psi in the bottle shiat.....

 

I couldn't agree more...Zex is a fun kit to run.

I really enjoyed the Zex and had the best runs after the second bottle...

I ran the best time at the track (14.5 @98) on the 55 shot jets...

I am done re-installing the system and definetly glad I have a heater...it makes such a difference, opposed to the worthless purge valve.

Perhaps in a couple weeks I will get to go back to the track and lay it down good again.

 

You can do the same with the NOS bottle heater. Just remove and bypass the thermostat. Hehe how else do I spray at 1200 psi?

 

Mine runs between 975 and 1050 but the specs say 900-1050. I still think I can control it closer manually. I like to keep mine at 1050 all the time.

 

Jime can you tell me what NX wet kit you have and what other things that I need to run safely at 75 shot? What would you think my car a 5speed would run under these conditions?

 

Hard Questions. I have a 20923 EFI kit it comes with a 35-50-70 HP jets.

Safely? You don't need a fuel pump for a 70 shot on NX because the system used stock fuel pressure so you can run a higher shot than dry because you aren't boosting fuel pressure.

I would have at least an EGT gauge, Nitrous gauge and fuel pressure gauge.

You also need a bottle heater to maintain the correct pressure because.

Last year I was running 15.4 N/A and with a 50 shot could just hit the high 13's. Remember I have an auto and am running slicks.

Traction is you biggest enemy in a 5 speed, especially when you start to develop some HP.

If you do want to run over a 70 shot all you need in addition is to buy the 190 LPH low pressure pump, it is sufficient to run you up to over 400 HP.

 

What about spark plugs and purge kits?

 

Sorry, I run 2 steps colder ie BKR7E which are copper, gapped at .035". Don't use platinum. I does run a little rough when really cold but that is the only downside I have noticed.

Purge is not really necessary, more show really. It is fun though. You can do the same thing by giving it a quick shot during your burnout if you are racing.

See I do that off the top of my head and I always forget stuff.

 

I do not do burnouts, because I consider them to be a waste of fuel and extra wear and tear on the engine, tires and tranny. Plus I do not plan to use slicks. I just got some Dunlop Sport A2 tires. You think that I will have traction problems with a 75 shot in second gear or third gear?

 

Well I only do burnouts to warm up the slicks, I don't do much but it is required. Not with street tires though, waste of time. They aren't really that hard on the trans and engine if done properly and for the correct length of time.

Traction in 1st gear is what I am talking about, but could be 2nd as well, I am not into manual trannies so not much help to you there.

Nitrous is better suited for autos because you can hit it off the line and never let up, don't need window switches etc.

 

With a 5 speed I can break traction in first without trying. Maybe I will need a window switch to contol my flow so that it turns on at top of second.

 

A window switch will not do that because it does not know gears. It only monitors RPMS and activates/deactivates when the set levels of RPMs are reached. But, you can put a little switch on the shifter to "activate" the window switch when you do shift into second.....