ANYONE know much about zex (wet) kit i want to put it on my 02 si but im not understanding to well how the computer it comes with works is it a fuel cut off or does it make sure there is enough fuel at all time and if so would i need to tune it if it works like part 2 for fuel and etc
nitrous
- Thread starter HATCHMAN82
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thanks but it is a little different than that thanks for your help though i will ask you some questions about that when i have a little more time
how the zex computer dealy thing works, is it monitors bottle pressure and adds or subtracts fuel according to the reading, and it also has a diaphram that will burst if pressure is too high so it doesn't shoot too much, depending on the shot all you really need to do is retard timing accordingly, not a bad system at allHATCHMAN82 said:
which IMO is poor.. i base this statement off of ever fluctuating bottle presure... bottle pressure can dramatically spike at times..j_fukin_t said:
i dotn know what you are talkign abotu but it sounds like you are talking about a rupture disk.. all nitrous bottles have rupture disks.. this is a thin disk designed to fail at a pressue lower than that which would cause the tank to fail.. the purpose of this is to keep the tank from turning into a large grenade... that is typically attached to a blow down tube so that in the event of a rupture the gasses will exit the car in a safe manner.. you lose me at the part where you say "so it doesnt shoot so much"j_fukin_t said:
i agree with the bumping down of timing.. but other safe gaurds to investigate are colder plugs...and it is my opinion that premium gas is a must..the higher octane fuel is more resistant to detonation... MOST off the shelf nitrous kits are intended to be used on fairly stock cars with minor adjustments..j_fukin_t said:
yea i was talking about the rupture disk, & i retract my statement about the "shoot so much" (knda sounds like a porno) lol, and i figured he would have some more questions so thats why i didn't mention plugs or anything just yetoc_civic said:
no need for bigger injectors.. what motor? 75/80 is the MAX id go on a dry kit.. if you plan to eventually go further than that id look at a wet kit.. the NX wet kit is nice.. the NOS wet kit is also nice IMO.. i further think you can take all these magic box kits and throw them in the garbage.. i prefer a more traditional mechanical nitrous kit like the NOS kits.. you may want to upgrade the fuel pump if the car is old.. get a new fuel filter.. s**t like that... if you read that nitrous FAQs i posted the link to it will give you a lot of info...kyle10182 said:
jdm b18c(1) how do the performance gains compare from wet 75 shot to dry 75 shot? what about the safety? which is safer for the engine? i've heard MANY times that wet is safer. but thats just people talkin... i read the nitrous faq. it doesnt mention much about what other mods help the nitrous perform. thats why i asked. i've always been against aftermarket fuel rails on an internally stock motor, which is what i have. would they get me anywhere with a nitrous setup? wet or dry?oc_civic said:
been there, done that.nitebeest said:
a dry kit is easier to install for the beginner.. but can have uneven nitrous distribution at higher size shots resulting in detonation and eventually motor failure.. the reason this occurs is a dry kit increases fuel preasure VIA the stock Fuel System.. meaning that all 4 cylinders recieve the same amount of fuel but may nto recieve the same amount of nitrous.. the nitrous/fuel distribution is generally ok with small amounts of nitrous (50-75 shot) but as more volume of nitrous is added it may fill one runner more than the next vreating uneven nitrous distribution and a hot lean burn in some cylinders and an overly rich burn in others.. which can lead to engine failure.. with a wet kit the nitrous and fuel are mixed evenly producing a much more controlled mixture thus elimanting the potential for uneven distribution.. the only draw back to wet is it is a serious install requiring the fuel system to be spliced into.. and you are filing the intake with fuel and nitrous vapor.. which can be pretty volatile..kyle10182 said:
in short dry kit is safer to you
a wet kit is safer to the motor itself
i helped a buddy install a ZEX dry kit on an h22. the directions said put the nozzle somewhere 6-8 inches away from the throttle body? how's that sound to you? i think im gonna go with a wet kit. 75 for now. and possibly increase later once i get the internals sorted out. i have stainless steel valves, and bronze valve guides for it. are cast pistons an issue with nitrous? forged better?
thanks guys my other question is that do i need to really get k pro or anything like that for this system in a k20a3 (02si)
Hey it see,s liek you no alot about nitrous so i have a few ? for youoc_civic said:
1.Why place the nozzle farther away from the TB on a dry shot?
2.How far away from the TB like by the intake filter the the middle of the intake tubing?
3.i have an h22 and i was only planing on running a zex kit with just a 50 shot on it. how long of motor life am i looking at once i put the bottle on it i have about 35k on the motor right now has a stock bottom end on it and also i was not planning on using this all the time just a lil back up.
mine is like 3 inches away from my throttle bodykyle10182 said: