Spray and High compression

[Jake1234588]

Ok heres whats up, i have a d16 with a vtec head on it i had 10.0:1 but then i put the vtec head on it so i think its 11.0:1 plus i wont to run 100 shot of spray,i herd if i get alcohol injection it will run just fine,so i got alcohol injection kit and i just wont to know if its going to go all to shit fast or slow or(as i hope)not at all,and will i be happy with the results or mad?
well someone help me out with this
thanks

[HybridSS]

Dont take this thr wrong way....but it sounds to me like you need to dig into some books on nitrous and get educated a bit. It may save you some heartache. Also...dont go for the 100 right away...start small and work your way up checking AF on a dyno with wideband O2 sensor. Dont just jump in here and spray away. Youll regret it. :)

[Cronic]

Agreed.

[Keith]

BOOOOOOOOOOOMMMMM... NOS SUCKS...

[Cronic]

Nitrous doesn suck, it's just like any other method of forced induction. You have to have restraint and some knowledge in the art. Or boom. either way. too much is a bad thing. When your lean, your dead.
Since this motor is an aluminum block, I would stay away from super high compression, as aluminum isn't that strong. Sleeve the motor if you planning on hitting 16:1+

[Strongest Man In The World]

nitrous loves compression, to a point, its not like forced induction where it needs a low compression to keep from detonating. As long as the fuel supply is there, then you should be fine with a 11.0:1. alcohol injection will help, but is not nessisary.

now dont go and try to run boost on 11:1 compression

then theres the big boom.

and to reply to turbo hatch, Nitrous is a great tool if used properly, and also when it isnt called naaawz or nossss

[Cronic]

Word. Thanks for the tip.
But doesn't n2o raise compression? An aluminum block to my reasoning can only hold so much, and the sleeves in an EX aren't the best made. Im just saying don't go crazy. I wasn't speaking of detonation. I covered that with my fuel comment. I was talking about those sleeves crackin under stress.

Anyone else's thoughts?

[Strongest Man In The World]

not sure on the sleves of the hondas but with the fords, its the last thing we worry about when using a 200 or less pill

[TampaTraps]

what combo are you using

d16a6 bottom and z6 head 10.6:1 comp
d16a6 bottom and y8 head 11.1:1 comp


thier is a guy in bredenton running the y8 mini me 11.1:1 comp and runing 11psi on a jrsc it runs good. it works good because of the flat a6 pistions and the smaller cc' chamber on the y8 head.

like everyone said go with a small sho then go up on the dyno if a/f ratio is right

[Dr Evil]

There is no point getting alchol/methanol injection. Nitrous has the same effect, it is sprayed in the intake and cools the intake air temp.

[Strongest Man In The World]

thats what i thought but i wasnt gonna tell him what to do on his setup :shrug:

[Cronic]

Interesting. This is one of the first times Ive heard of alcohol injection.

[RONIN]

i ran 8 psi on 10.5 comp, with forged bottom, and was looking to add n2o before i joined the dark side. boost doesn't not like high comp, you just can't run the extreme levels like you could with lower comp. on my plus side i had power when not under boost also. the mini-me mentioned also has some other tricks up his sleeve.

i would worry about a 100 shot on a stock parts with comp, one small mistake in the a/f is going to burn you.

[0HP930]

Originally posted by "crx89si"

thier is a guy in bredenton running the y8 mini me 11.1:1 comp and runing 11psi on a jrsc it runs good. it works good because of the flat a6 pistions and the smaller cc' chamber on the y8 head.

I got to say I'm pretty skeptical of anyone getting away with that much boost on top of that much compression.

Compression + boost has its limits no matter what the piston geometry or chamber design is like.

[TampaTraps]

yeah it's sounds weird but pm bert-o he works with the guy at bradention honda. i just sold him a part and saw the car and know a y8 head on a a6 bottom is 11.1:1comp. so ask him

[Matt Vassallo]

last time i checked i believe seeker one steve had forged internals, but i could be worng.

[BERT-O]

Originally posted by "400HP930"

thier is a guy in bredenton running the y8 mini me 11.1:1 comp and runing 11psi on a jrsc it runs good. it works good because of the flat a6 pistions and the smaller cc' chamber on the y8 head.

I got to say I'm pretty skeptical of anyone getting away with that much boost on top of that much compression.

Compression + boost has its limits no matter what the piston geometry or chamber design is like.


Nope, its doable and can be realiable. As long as your air/fuel mixture is correct, anything is possible. Hint, Hint .....engine management.Hell, I've seen B-series motor running 12.5 comp or higher on pump gas.

[BERT-O]

Originally posted by "Mattback"

last time i checked i believe seeker one steve had forged internals, but i could be worng.


Yes, he did rebuild it for more boost and to run a bigger Nos jet.
However, he didn't have no problem running with the same set-up, But he is running a engine management to correct his air/fuel ratio in order for hime to generate more boost.

His setup will take out B-series guys with or without forced induction. His mods quite sleeper with his SOHC mini me.


:D

[SEEKERone]

not that this has everything to do with the inntial topic but since i was mentioned i would like to set the record straight.
i have run a mini-me setup (A6 block-Y8 head 11.0-1compression) with 11psi JRSC boost with 25ish nitrous shot...this dynoed to 189hp and 174trq. this WAS with stock pistons and rods. this configuration was damaged by running an extended high speed, full boost and juice fifth gear run(speedo was WAY buried). stock cast pistons were subjected to severe stress and reponded by cracking at the ring lands. engine was reassembled using forged pistons and rods with slightly lower compression(approximately 10.3-1) and fed a slightly larger dose of nitrous. this configuration has dynoed at 200hp and 165trq. anyone who knows my car will verify the fact that it is no race car being complete interior plus the usual 1/2 ton of misc. junk floating around in the back. also being a sohc means the the best Dseries trans is equal the the worst Bseries trans. as far as being a threat i can hold my own.
<rant mode off> with all that being said can what was intially asked be done...quite possibly. but the most important thing is tuning. don't think that you can just bolt a few pieces on, add the juice and be ready to go. tuning is the key to increasing power by the amount you want and still retaining some sense of drivability and reliability. as other have said start smaller and work up from there. a standalone is most helpful (work great for me) but is worthless if not tuned with the help of someone who knows the path.

[RONIN]

hey steve, was that on the squeeze or just the mechanical stuff?

[SEEKERone]

Originally posted by "RONIN"

hey steve, was that on the squeeze or just the mechanical stuff?

that was with the juice (30ish dry shot) BUT stopped revving at 7100....remember that this is a sohc not able to turn 8500-9000rpm
remember that HP=(TRQ x RPM)/ 5252
so that the higher you spin your torque then the higher your hp...not having that extra rpm is a big difference hp wise.
steve

[jdm wong]

I also agree with Steve, dyno tuning is the way to go.
I saw 19 hp my first time at the dyno just leaning out my fuel.
It doesn't matter high compression, boost, or nitrous: with the proper tuning "air/fuel mixture" things will stay together!

88 crx B16a, Jrsc