Probably a silly question...
Does a 65hp shot meant that the car will produce 65hp extra to the wheels?

Can a stock engine safely run a 65 shot? (Looking at doing it to a H23A with 140k miles on it)
if not what safety upgrades are needed??

thanks!

 

no it doesnt mean 65whp

do a cylinder leakdown test on your motor before you add nitrous

if you want nitrous, be safe and add an ignition system, colder plugs, retard your timing by 2 degrees and you should be fine if your motor isnt already beat the **** up already after 140k.

 

I believe unless it's a NX kit, then it's 65 at the crank. And check the motor's compression to see if you can spray.

 

Everything Gude said is right. The NX kits do tend to rate their shots at the wheels or close to it, where as NOS does not.

 

Thanks for the advice!

If I go ahead with the deal I want to lower compression down to about 8.5:1, resleeve and do all those things that you stipulated.

Another query though, when you turbocharge a NA car, most people lower compression and stuff that (while reinforcing the engine) makes the car slower (than stock) until the boost comes on.
Is that the same with NOS?
Will my car be slower than it is now unless I have my finger on the button? Or is it possible to have somehting like a switch that changes fuel curves so that when I am driving around with no intention of squirting NOS my car still drives like it does now?

 

Dude, unless you're goin w/ a small turbo, don't run low comp. pistons. Your car will be a dog off the bottle

 

ok i wanna go nitrous can you guy'z tell me what i need to do to run safe nitrous. i was looking forward to running Zex kit wit 55 shot, also i have intake and exhaust also i wanted to get adjustable cam gears.

 

with the zex 55 shot you won't need to upgrade much. Like xxx and gude said get a leakdown test on your motor to make sure its strong. Then get some colder NGK plugs i'm not sure what the number for the plugs are. With that a 55 shot will be fine. if you ever bump up to 75 you need to get an msd ignition so you can retard timing 2 degrees while spraying.

 

i'm kinda new what's a leek down test? also where could i get it done at?? How would i know if it could handle a 55 shot of nitrous. i have a h22a4 yes its a auto thats why i'm going nitrous. heheh

 

well for both of these you can have this done at a local shop or tune-up place. On a compression testthey will remove one of the spark plugs and turn the engine over three times and record the comp. # and compare thoes to the stock comp. #'s to see how well each cylinder is performing. A leak down test is pretty much the same, they just see how long each cylinder will hold its comp. if its not holding good pressure then you've got some internal damage that will cost you some serious problems under the use of nitrous. Problems being bad rings or your cylinder walls are scared. I think a comp. test and leak down test should be done to any car that you buy just to see how well its performing from its original stock #'s. And if you pass everything with checkard flags then spray the hell out of it lol i sprayed all the time with 50shot. I only shot a 75 when i was running at the track and one other time that i always like to brag about. I raced a 98 cobra haha on a 75 shot and got his *** handed to him but with my new setup i hope to be doing way better then this.

 

i was just gonna add that this usually cost about $60 to have done and thats the highest ive ever seen it at. But i suggest just buying the tool to do it at Napa and doing it yourself. Kind fun little thing to do just go get a friend to help you and start taking car of your car yourself . Plus if you have any friends that need it done charge them 20-30 bucks? The tool comes with instructions to do both, and if you cant find stock comp. numbers just post on here and im sure someone will know, or I will at least.

have fun man

 

All that you need for a 55 shot is the colder plugs and a compression test. You don't need forged internals or a sleeved block for a 55 shot. I'm running a 75 shot on a stock block, putting down 220 whp(on the weaker side because of a lack of tuning), and I'm fine.
Also the last thing that you want to do on a street car with nitrous is to lower the compression of the motor. If anything you want to raise the compression ratio.

 

the plugs are BCPR7ES-11 and you can get them around $2.00-$2.50ea

And for the compression test, I tested mine a few weeks ago... all cylinders were around 210psi with no more then 3psi difference between them. Can some one compare these #'s? its a 93 h23a w/ 100,000 miles

 

So laughinxxx, what other mods are you running to get 220 whp on a 55 shot?
Does anyone know what I could expect to get out of a 92 H23A with exhaust/headers???
I am trying to see if it is worth it or not!

:-P

 

I'm running a 75 shot/i/e and during my 220 whp run I had a 10.5 AF ratio. My Hondata S100 should be here this week and once I get that tuned I'm expecting another 15-20 whp on the bottle.

 

Ok don't but a ZEX kit, they suck, they are like the starter kit for boys. I have felt um all and ZEX is the worst. I'd go with NOS, or NX, or Venom but not ZEX. And as far as retarding your timing and ignition are concerned just buy a Digital MSD box. It's worth the money ($350). It allows you retard the timing when you hit the button for nitrous up to 10 degrees while giving you enhanced spark. Also you can set a rev limit for launching your car off the line. But do upgrade your regulator and wires and plugs, with the MSD box. Without doin any internal upgrades don't hold button down for more than 6 seconds..Trust me 2 times on that one. + =

 

I've always heard no more than 15 seconds and that rule has worked for me.

 

15 seconds? Your trippin. You must be runnin CO2 or something, whoever told you 15 seconds or that's what you've done, well then your engine is spent. Plus if your car is that slow that you need 15 secs (if possible) of nitrous then you just shouldn't have it on your car. + =

 

What, are you a moron? 15 seconds is being rather conservative. Thats like saying you can only be under boost for a few seconds, or else your gonna kill your engine. Since is painfully obvious that you know jack about nitrous, we will shed some light on it for you. Nitrous is not flambable. You trippin yet. Nitrous Oxide is very easy to understand, if you take the time to learn. Nitrous breaks down in the combustion chamber, 2 parts nitrogen, 1 part oxygen. More oxygen means you can burn more fuel, meaning more HP. Simple isnt it. Nitrous is cold, spray it on your hand, and you got frostbite. This is good for engines though, very low intake temps, which means less chance for detonation. Very simple. BY the way, Laughin knows his **** when it comes to nitrous, he's a nitrous moderator over at preludeonline.com

 

1. You're right my motor is shot to ****. I have absolutely no compression in any of my motor's cylinder. Thank you for pointing out why that my motor is blown. Even after all of those times at the track I never noticed it. I guess those 100+ mph trap speeds had me in denial of how fucked up my motor was. I had better go rip the longblock out of the car and send it off to the machine shop right now.
2. Yes, I am that slow. I run 16s.
I know nothing about nitrous. I am making everything up. I am not the nitrous mod on preludeonline.com. I didn't not write the basic nitrous tech write up for PO.com and superhonda.org. I don't even have a ******* license and I have a feeling that my Huffy bicycle may have more power than I can handle.

 

laughinxxx---> 7299 posts
H22CRX------> 14 posts

conclusion = n00b!

 

H22CRX why do you say the ZEX systems are crap???? do you even know who makes them?

 

Lude I'm sayin I'm not a fan of the ZEX systems based on experience with them compared to others. I just feel that NOS, NX, or Venom are better buys and systems. As for Terreto..your an idiot. Anyone can figure out nitrous, but actually nitrous creates heat in the motor, it's not like ice (or frostbite) for your motor. So you go have fun with your big wing and stop posting.

 

I hope they're not crap! or else I just sent you a money order for $375 worth of ****!

 

wrong answer numb nuts.... the oxygen creates a hotter combustion, wehre *** the nitrogen cools it down, overall it gets cooler, not hotter, that's why so many turbo guys run nitrous as well, to cool the charges from the all the heat the turbo creates

and, i don't have a wing, and i prolly know more about this **** than you