i have been thinking of selling my turbo civic and buying a 2nd gen
rx-7 and putting a 75 or 100 dry shot on it. anyone on here ever do
this? i have had good experience with the zex dry nitrous kit in the
past. anyone know the 1/4 mile times i should expect?

 

Thats kind of a big shot to go with in dry form. Not saying it wont work, but the NA fuel pump/injectors wont really keep up. If you put in a wet system and got a way to change the timing maps, then you could have a really nice nitrous setup.

If not, it will blow up soon after you start using it if you dont modify the timing. Atleast thats what I would assume, since it is a 100 shot. But, honestly I dont have 1st hand experience with 100 dry shots, stock timing and stock fuel. So, good luck
I can however tell you that as nitrous being the main power additive ... you will spend lots of money on refills.. lol

 

you can retard the timing with the crank position sensor right? if i remember correctly there is a adjustment. i used to have a 2nd genbut it was carbed and had a disributor. i would probly put some bigger injectors into it and control the fuel with a afc. i'd buy a pump to.

i know that nitrous cost a bit of money. i used to use a zex dry kit on my civic but i found a good deal on a turbo kit so i bought that and ditched the nitrous setup.

 

Why wouldn't you just be safer and do a wet shot with an upgraded pump? No upgraded injectors needed.

 

i'd rather run a dry shot. that's just me though.

 

How come?

 

"werd."
as that sign-holding smiley would say.

 

He probably already has the kit.

 

You better save up about $1500-$3000 (depending on if you can do it yourself ect) for a rebuild lol.
I would use a wet kit, and when the engine goes get it bridged and rebuilt with 3mm seals and adapt a FD intake manifold. Are you thinking of getting a turboII or N/A?

Also, I dont think they made any carbed 2nd gens, I could be wrong. what year was it?

 

Some people adapt carbs to N/A FCs

 

i plan to use a signle fogger setup and would rather have a more even fuel dispersement (sp?). plus i have had very good results in the past with a dry kit.

my 2nd gen that had the carb on it was not stock.

 

you can retard the timing with the cas, but thats across the board. You dont want that ... you want to adjust the timing when you need to.

 

like on a sat night...lol. that;s all i want is to be able to run at the street races and not get my *** handed to me left and right. i would probly buy some msd boxes as well and maybe a couple retard boxes. speaking of this i am thinking of getting rid of my hks igntion box on my turbo first gen and am thinking about getting a MSD BTM. if i hook it up with one box on the leading side (wasted spark) but will the retard have any problem with the trailing side that is still running through the distributor?

 

http://www.1300cc.com/howto/how2/NOS.htm

;o

 

i high recommend PMing Sean Cathcart (the one who wrote the nitrous article in the 1300cc.com site).

u want a dry system for the wrong reasons (a more even fuel delivery????). if u said ull be running only a 50 shot or less, id say ok...as long as ur injectors are perfectly fine or u tune them to run really really rich. which is ok duirng nitrous activation, but i dunno if u want that while driving normally.

since u want a 50-100 shot, wet ONLY!

why?

so nitrous doesnt get another dose of bad press from ur car potentially blowing up due to misuse of the system.

true, u can change timing, but that means driving around town on a saturday night with the wrong timing until u use ur nitrous which will not be 100% of that saturday night. again, unless u want shitty normal driving.

a properly tuned wet system will be as effective as a dry system, only much safer and ur able to drive ur car to the races normally.

its up to u if u want "easy" power. but, please don't add to the number of people who have from nitrous power greed. if ur gonna spend money on it, spend it right.

 

words of wisdom to live by on a rotary buddy, a 100 shot dry will kill it if every thing is not perfect. go figure on getting a loan to get the engine rebuilt, (or max your card for the parts and DIY.

Doug

 

With stock timing maps, you don't need to touch retard for the nitrous levels he's talking about.

 

You get better fuel atomization and equal combustion chamber dispersement with a wet kit compared to a dry kit when installed a second gen.

This is not a civic. Using a dry system would be a mistake.
I have seen more blown engines with Zex dry systems than any other.