Lotsa Nitrous ?'s

[bigblockfox468]

Okay... pardon me for asking some things that may sound stupid. I have no experience on this nitrous stuff. I bought a car (1 1/2yrs ago) with it already installed. I have not used it and would like to at the dragstrip this spring. Can't seem to contact the guy I got this from to ask questions. Here goes. How can I confirm what I have? I was told it was a 100 shot. How do I purge this? I remember this guy telling to have the engine running like 1/2 throttle, with selonoids activated and bottle open and triggering the micro switches until the engine sounds crisp. Sounds hokey to me. Is there a better way? How can I make sure this is set up correctly? You hear alot of horror stories and I don't want to destroy my engine. This is on a 4150 series intake. What if I change to a 4500 series intake and carb? Is this system going to be obsolete when I do this? Those are my main concerns right now. Any feedback will be greatly appreciated. Any advice on this system to make me feel comfortable and not gun shy when the time comes for me wanting to use this will also be greatly appreciated. Thanks, Mike

[Mark H]

I will need more information before I can help you out.

Is this a Edelbrock Nitrous System?

I assume this is a plate system.

What style plate system do you have?

What size fuel and nitrous jets does it have.

If it has been sitting for a year you should service the entire system and rebuild the solenoids.

Ededlbrock sells a specific purge kit.

I suggest you surf our web site to become a little more familiar with Nitrous Systems and how they function. There is a lot of technical information available and you can review our systems to see if anything looks familiar.

Let me know when you have more information.

[bigblockfox468]

Yes it an Edelbrock system. I believe its a Performer kit # 700001. I haven't removed the carb to see what jets or plate it currently has. All I know it's on a 4150 series intake. How and can a Performer kit be put on a 4500 series (Dominator) intake? Because I want to upgrade to a single plane dominator carb and intake. I see in Jegs you have a Performer RPM kit for a Dominator flange. Thats why I'm asking is this Performer kit going to be obsolete for my intake/carb upgrade. I did print something from Edlebrocks website which I believe is the instuction/user manual, 26 pages. I have read and reviewed that info. Also in that manual it does not show or talk about how to purge. Thanks in advance for your info. Let me know what else I can tell you.

[Mark H]

If you are changing to a Dominator Carb. you will have to change the Nitrous Plate. Edelbrock offers a Performer RPM Nitrous Plate kit #70063. The kit includes stainless braided hoses from solenoids and jetting. If you are going to run much more than a 100Hp shot I suggest you upgrade your solenoids to the Performer RPM Nitrous and Fuel.
If you want to purchase a complete Performer RPM Dominator flange Nitrous kit use Edelbrock part #70053.
Edelbrock offers a purge kit part #72176.

[bigblockfox468]

What's the difference between the 70063 and 70053 kits :confused:? 70053.... does it include the selonoids for more than a 100 shot? Which I don't have. Also with the updated jetting map chart that I ran across on this site, is this only for a dual stage system? I have not physically confirmed what jets I have but in the manual I printed it says for a 100 shot use 57/65 jets and the updated chart says to use 57/57 jets if purchased after (I think it said) August of 08. I bought the car in Jan 08 and the kit was already installed, so is this something I need to do for better performance? And doing that isn't it actually leaning the fuel?

[Mark H]

The #70063 kit is just a plate and lines. The #70053 is a complete kit, bottle, lines, solenoids ect.
If you purchase just the #70063 and want to run more than a 100Hp shot I suggest upgrading your current solenoids.
The #70001 System you currently have is a single stage, the jetting updates on the web apply to Dual Stage systems.
For a 100Hp shot your system should have in the area of a 57N / 57F jetting. I recommend checking your current jetting, if it is close to this and not any leaner on the fuel jet I would start there.

[bigblockfox468]

Thank you!! You've been a great help.

[bigblockfox468]

I checked my jets. They are 075 on the fuel and 071 on the nitrous. So what is that giving me? From the jet map it looks like a 150 shot :confused: on the second stage of a dual stage system. Can a person use that map the way I did? Meaning since I have a single stage system and I located the jets on the map under a dual stage just figure it as 150?

Your recommendations were to use 57's on both fuel and nitrous for a 100 shot. I will adhere to that. But I would like to know what shot it's getting with those jets and if I were to use them on a 70001 system would there be any problems? And what would your recommendation be on timing...... using the jets I have and using the jets for a 100 shot?

Also do your plates have a part number on them? Reason I ask is I would like to identify what plate I have. I didn't see any number on the sides and I didn't remove the mounting gaskets because I didn't have any to replace them if they were to tear or rip upon removal. Are those gaskets something special or can I just get some from my local parts store?

The water is getting murky again please help me out :rolleyes:

[Mark H]

71 Nitrous 75 Fuel = 150 HP Shot.
Ignition retard = 8 deg to be safe.


57 Nitrous 57 Fuel = 100 HP Shot.
Ignition retard = 4-5 deg.

Yes, you can purchase gaskets at your local parts store.

[bigblockfox468]

What's the gauge actually telling me?

http://i279.photobucket.com/albums/kk135/bigblockfox468/MikesPhotos005-2.jpg

[Mark H]

The gauge is telling you the bottle pressure. Optimum bottle pressure is 950 psi. The numbers represent psi x 100(ex:9 = 900 psi). I suggest you review Tech Tips in the Nitrous section of the Edelbrock website for further details.

http://www.edelbrock.com/automotive_new/mc/nitrous/intro_tech_tips.shtml

[bigblockfox468]

Are the spray bars different from the Performer kit to the Performer RPM kit? Meaning does one have more holes than the other? Still trying to figure which system I have. Any other info you could give to me on how to distinguish between the two would be very helpful and appreciated. Are the selonoids marked different? I see on my fuel selonoid, the decal on it says Performer RPM. I need to verify what the spray bar differences are. Hoping this will confirm what I actually have, be comfortable and put this thing to rest :rolleyes:

[Mark H]

The Performer plate has fuel and nitrous spray bars with 8 holes in each tube.
The Performer RPM plate has fuel and nitrous spray bars with 20 holes in each tube.

If the label on the solenoid says Performer RPM Solenoid that's what you have.

Pics of the Solenoids and descriptions of the Plates are posted on the Edelbrock website.

[bigblockfox468]

Okay Mark,

I checked out my system and it is a Performer RPM kit :D. Fuel and nitrous seloniods operate when activated, weighed my bottle it weighed at 22.5 lbs, and removed the 75F and 71N jets and put in 57's. Being conserative for now since I've never dealt with nitrous before.

Plan on doing some TNT this weekend. I will be tuning in my jetting and timing for all motor. Then once I'm there I'll retard my timing 4* and do a shakedown pass on spray.

I appreciate all your input and info you have supplied me with. I by any means am no nitrous guru now but at least I have a little more understanding of what I have and what it is about. Thanks to you.

Providing it doesn't rain on Saturday we'll find out what this will do, so keep an eye out for my results on your Post your Results section. Thanks again!!!

[bigblockfox468]

Is it normal for the plugs to get cleaned after a nitrous run? Reason I'm asking is prior to spraying I was tuning it in on motor only, changing jets, playing with timing, keeping an eye on the plug fuel ring. Which was on the porcelain about an 1/8 inch above the the electrode. Then after my last run with nitrous I rechecked my plugs and most of the fuel ring was gone but no sparklies. I used your recommendation to have 57 jets for both fuel and nitrous. I posted my time slips in the results section.

[Mark H]

That is normal to a certain extent. You do want a little fuel ring. I would increase the fuel jet, watch your E.T and have another look at the plugs.
Attach a picture of your spark plugs if you want more feed-back.