mr0pistons

Ok, I did search. I read a very informative post by scathcart(Nitrous Injected in a Rotary Engine) all about it. It answered pretty much all my questions. But, I don't know where to go with this. I want to do a 50 shot on a 86 NA(Intake Header Exhaust No Cats). I figure a dry kit is in order. If I have a dry kit with a 50 shot, do I need to upgrade my fuel system? If I don't need to is it a good idea? Also do I need some sort of monitoring device i.e. apexi s-afc, hks super afr etc...
Thanks for the help

BRIDGEP0RTED

you should be safe with a 50 shot with what you have, but i would not go over a 75 shot unless you have a wet kit once you get past a 125 shot that would be a good time to get a safcII

David

fastrotaries

UUhhh NO i would really stick with a wet shot. It wouldn't be that much more to convert.

www.fc3s.org and they have a complete how to.

scathcart

Use a wet kit, dry kits suck *** for tuning.
Either way, get a better fuel pump.

MazdaRx7Racer4Life

I have a Turbo II fuel pump for sale, make me an offer if you want it, Ill let it go for cheap

mr0pistons

if i just get the fuel pump, wont i need a new fuel pressure regulator as well? sorry, not interested in the fuel pump. is that all i would have to touch in the fuel system?

Molotovman

iTrader: (49)

You can run a 50 shot without any upgrades. I used to run a 55shot. But I sold the kit. I reccomend a Zex #82011 dry kit. It is a very easy and safe kit. I just installed my old one on someone else's GXL a week ago.

scathcart

Not really, you'll just run richer at idle. All other driving conditions will be the same.

FYI.... New FPR is $150.
New Engine is $2000+.
I think you need to re-evaluate your priorities.

scathcart

1. Zex sucks. I have seen more blown motors from their kits than any other. I can't stand FMU's.
2. you really should upgrade your pump when you run any shot on a modded car. Its just added insurance.

mr0pistons

scathcart-Can i just put in a fuel pump? If i do that do I have to install other fuel parts? Any recomendations?

BTW- Great nitrous article in the archive...very very helpful.

scathcart

Walbro fuel pumps drop right in for $80, reliable enough. Don't really need to touch anything else; you'll just run a little richer at idle.

mr0pistons

Do you think if i do a 75 shot i could get away with just a fuel pump?

scathcart

Yes.

WAYNE88N/A

While we're on topic, which Venom wet kit do you recommend, Scathcart, there are several different p/n's to choose from on Venom's site for Mazda cars (of which the RX7 isn't one of them...I guess the main differences would be between the 4 and 6 cyl. kits, huh?

scathcart

I have only installed one venow kit, and the owner did not want me to attempt any initial tuning/set-up, only install.

Thus, my experience with venom is limited, other than to say he blew his engine within 3 weeks, and I have not blown any engines installing wet NX/NOS brand.

WAYNE88N/A

I could have sworn I heard you mention how good the Venom kits are, LOL...I know you've changed your preferences over time...OK, so, I'm running strong with my rebuild now, new rotor housings, everythings good, what p/n NOS wet kit do you recommend (I only plan on using it maybe once every week or so to take care of some of the stronger cars that want to play...no more than 75 shot...already plan on upgrading pump...stock except intake/ exhaust)

scathcart

Purely from discussions among the local drag racers and my own personal research. Let me explain my exact theory.

1. Don't use dry nitrous. Can't stress enough.
2. If you must use dry nitrous, use Venom.

Please keep in mind, guys, that my experiences with nitrous are not solely on rotaries. I have a whole other set of rules for piston engine use, in which I usually prefer dry nitrous (though I again typically use NOS brand dry). The (opinionated) rules I state on this forum are from experiences attempting to tune/install nitrous kits on rotaries only.

WAYNE88N/A

Understood, but that's why your experience is so important for us guys not wanting to toast our engines...So, NOS wet kit, huh?