10:0:1 compression and nitrous. what octane

[na90dsm]

ok heres the setup i wanna run.

magnus ross pistons 10:0:1 compression
zex ejector air amplifier kit w/75 shot
zex dirrect port 150 shot


all on forged internalls. id be using eagle rods and total seal gapless rings. cleavitte bearings all around and the whoel 9. ill be using crower severe race cams, mad springs,1mm valves with stock sized intake porta on the head(n/a application)

any concerns and thoughts. think itll work out or go poof

 

[DSMJim]

225hp shot is a lot on pump gas. If you ran the setup from a seperate fuel system on race gas and the car from the regular gas tank on pump it may work but that would be the only way. I would think you could spray 150hp shot on pump gas but the 75 shot on top might not work out very well. You would have to be on 110 minimum to get into that zone.

 

[na90dsm]

the 75 shot is that zex ejector shot that goes in the air filter. it sits dead in the end and just amplifies air. its at the very begining of the intake. it wont even hit the motor, its also not meant to.


the 150 shot however will hit the motor. still think its to much. any other thoughts?

 

[TD05HTalon]

i'm curious - how does that 75 shot in the air filter work? i've never heard of it and i'm not really understanding how it wouldn't make it into the engine.

 

[DSMJim]

Its a dry kit that just puts the nossle really far away from the intake path. It doesn't really do any more to cool the air than putting the nossle right at the throttle body does. Most of the cooling effect happens in the plenum anyway but whatever. Its something else for ZEX to sell.

That shot will make a 40-50hp difference at the 75hp level which is typical of most dry nitrous kits.

 

[na90dsm]

so just that 75 shot alone will make that much of a difference. you think id just be better off running the 150 shot or the 75 shot by themselves. im definately gonna need the nitrous for power increases.

lemme knwo your thoughts

 

[Mirage2LTurbo]

If you're building it for n/a, get higher compression pistons. You can run 93 pump gas on 11:1 and sometimes 12:1 as long as its tuned good and the head isnt decked too much, among other factors.

 

[na90dsm]

i was gonan do that but i was wondering about the nutros on top. im gonan run 10:0:1 pistons in my first motor and a 150 shot. i may get 11:0:1 if i get a good price. most likely im pushin for the 11:0:1 setup.

 

[DSMJim]

If your planning on spraying heavy then stick with the 10.0:1 and just spray the hell out of the car.

An extra point of compression will give you 8-10hp but reduce the amount of nitrous you can spray by a lot, so the trade off is totally not worth it. You would be better off to put race gas in and spray 200hp shot at the track for crazy ET's instead of 11.0:1 for a low 14 second pass, whoptie do.

My buddy had a GSR Civic built with 9.5:1 and he sprayed 175hp shot on the car at 2400lbs and went 11.1 @ 125mph so that should give you some indications of what can happen with nitrous and enough weight reduction.

 

[na90dsm]

i was thinkin 10:0:1 would be kinder on my motor and setup in general. i thinmk im just gonan run that setup with the 150 shot and tune the hell otu of it.

weight reduction on a 1g dsm will be involved to get to that weight. there heavy cars. imagine one 2400 lbs

 

[DSMJim]

Everythings gotta go. Dash, heater core, seats full interior, windows for lexan, bumpers etc etc. You seriously gotta gut it right down to a bare shell and motor. Then add a few bits and pices in to make the car driveable. AFter that your going to have to put on a full once piece fiberglass front end and replace everything with fiberglass, doors trunk etc.. This obviously would be a track only car.

 

[igopoopy]

i'm curious - how does that 75 shot in the air filter work? i've never heard of it and i'm not really understanding how it wouldn't make it into the engine.

http://www.zex.com/information/products/nitrousairamplifier/

 

[na90dsm]

youd have to run it on a 3 inch intake pipe or on a maft setup on a 1g. its for a round 3 inch pipe. i was gonan run it on a custom intake and a maft setup with 3 inch mas

 

[wishihadatalon]

i know where you can get the fiberglass parts.

 

[kpt4321]

the 75 shot is that zex ejector shot that goes in the air filter. it sits dead in the end and just amplifies air. its at the very begining of the intake. it wont even hit the motor, its also not meant to.

Unless you have a nitrous filter somewhere, I don't see how nitrous will go into the intake but not into the engine.

 

[na90dsm]

3 inch injen the legnth of a injen intake, by the time it gets to the motor its disapated int he air. this was my understanding of the whole deal from zex.

if it would hit the motor id just runa 100 shot jet in the filter.

 

[DSMJim]

3 inch injen the legnth of a injen intake, by the time it gets to the motor its disapated int he air. this was my understanding of the whole deal from zex.

if it would hit the motor id just runa 100 shot jet in the filter.

No thats not true. If you spray 50hp of nitrous into the air filter you will get 50hp worth of nitrous in the motor. It doens't matter how far away it is. I have no idea where you got this information from but it's totally incorrect.

The reason they did the air filter is so you don't have to drill your AEM intake if you ahve one you just add that filter on and no drilling required (honda guys are afraid to drill anything) however if you spray into the intake regardless of where it is, the motor will suck it in and it will be broken down during combustion no matter what. Nitrous injected into the motor is nitrous injected into the motor. It doesn't matter where.

Do not confuse that system with a the DEI cry-o2 system or anything like that. It's not like the nitrous is use to cool the filter only for a really cold air intake or anything. The nitrous is going into the engine.

Anyway enough about that.

[edit] WOW I had to edit this a few times, I shouldn't drink while typing on DSM Tuners.. Yeesh.. Ahhh nevermind. time for another beeeeerrrrr

 

[kpt4321]

3 inch injen the legnth of a injen intake, by the time it gets to the motor its disapated int he air. this was my understanding of the whole deal from zex.

Think about this. You are spraying nitrous into the filter, and it's going into the intake pipe. Regardless of how dissipated in the air it is, it's still all going into the engine, right?

So, whatever amount of nitrous you spray into the filter, it HAS to go into the engine.

Think about it this way: If it DOESN'T go into the engine, where the heck does it go?

f it would hit the motor id just runa 100 shot jet in the filter.

Go for it!

 

[na90dsm]

i read it disapated ina few bs sites. obviously i read wrong. damn honda guys cant even get test write ups right


ok so can i get a single jet for a 150hp shot or is 100 the biggest. i want a serious shot, 150hp prefered. if someoen could point me in the dirrection of nitrous jets and all it would be greatly apreciated

 

[DSMJim]

I have run 200hp single nossle on cars before. www.nitrousexpress.com is your friend. Buy the EFI stage one kit. It will come with jetting for 35-50-75 hp levels. Just call NX and order the 100 125 and 150hp jets. They are very cheap and they will send them directly to you.

 

[Batboost]

Pump is fine, even if you are boosted.

Stay wet though, IMO