Hi guys,

So I am going to create another thread, this time for a Direct Port Nitrous Setup I'm doing. I figured I would do this because I barely see any posts on the subject and when I do they are from 15 to 20 years ago.

I have received a lot of feedback, questions on the custom radiator setup I did and noticed that thread had been passed around Facebook, so what the hey maybe this will be useful to someone else.
The plan is to start off with a 50 shot and run it in 3rd and 4th, I've seen dyno sheets where guys pick up 80whp on a 50 shot so I will start there. This kit does go up to 250 but i'm not planning on going that big, I will get some pictures and part numbers of what I am doing and will update as I go along.

Nitrous Kit - NEX-80004EFI-10
Purge Kit - NEX-15600

 

Here we go, so far I got the NX Nitrous kit, NX Purge kit, and some connectors and a relay. I also ordered some other fittings and a bottle pressure gauge.

 

Today got a couple things done, I had to figure out where I was going to mount the bottle. Originally I was thinking of doing it behind the passenger seat but because it is bolted down it makes it hard to get to the bottle. If my son needs to turn it on as I get ready to make a pass, it will be hard to get to it. So I decided to place it on the passenger side floor next to me so I can grab see bottle pressure and turn it on or off if I need to.

A couple other little things:

• The kit does not come with a line bender or a tap for the manifold but NX Express offers them separately. The tap is a 1/16 NPT which I was not able to find a Ace, Home Depot or Lowe's, so it's something I ended up ordering from Summit along with a line bender.
• The kit does not specify the nozzle line sizes which ended being a 3/16 so I could order the line bender and it does not mention what you should seal the 1/8 NPT threads with. Called them up and they suggest Loctite Blue.
• For the fuel supply the give you nothing so you have to figure out a way to supply fuel to the fuel solenoid, I will show you what I am going to do.

 

Here's what I did for the fuel: I ordered a -8 female swivel to a -8 male with a 1/8 NPT union. Then bought a 1/8 NPT to male -4 so now I can run a line directly to the fuel solenoid.

 

Today I was able to drill out the Nitrous nozzles holes in the manifold 1/4 inch. I also ordered the 1/16 NPT thread tap along with the 3/16 tube bender. On Friday I’m going to try and get the solenoid brackets finished and welded on.

 

Oh hell yeah! I’ve never run nitrous on top of being turbocharged, I know adding a 50 shot will make 70-100 because of the air temperatures and denser air. I’m really tempted to drop down to around 27psi and run a 50 shot.

 

I didn’t realize a lot of people are actually using nitrous on top of running a turbo setup but I’ve been seeing more and more doing it. I know Speedfactory and their AWD car was running nitrous but it seems more and more are.

I agree with the power for smaller shots because I’ve seen some hondas pick up 70 to 80 WHP on a direct port setup. This kit is good for 250 but I’m starting with the smallest 50 jet.

 

This is going to be fun to watch! subscribed!

 

You bet!!!

 

I've heard tale of those running nitrous to help spool some of the larger turbos.

 

Yep a lot of the really big turbo guys do for sure, most Honda turbo guys I don’t think need it because the turbos are small in comparison to those domestic guys.

 

I made some progress with the setup but damn. Trying to bend these lines has been a real pain in the ***, I basically blew threw 3 lines and there was no fixing them so they are trashed. I am ordering a 3/16 tubing kit that will come with another 8 so I should be good to go, I used welding wire to get an idea for the bends I needed. Getting the lines in the tube bender and knowing exactly where the bends were going to be was the hard part. You can mark a line and be like this is exactly were I want it to bend but you then bend it and it's off. It took me some time to figure out that I need to account for about an 1/8 inch to compensate.

So now I have to wait for the new lines to come in so I can finish bending the other 3 and then from there I can finish the compression fitting to the solenoid distribution block and get everything basically finalized. I also test fitted the manifold on a motor to make sure it clears the oil filter and water tube but I hope everything fits with no modifications.

 

Looks pretty good. Doing it yourself gives you a lot of respect for those badass looking 2-kit setups on V8s with all the beautiful plumbing, doesn't it?

 

That is true, it's not that bad once you figure out where to compensate a bend when you mark it. But you won't be able to see any of this anyway since it's on the bottom of the intake manifold, there was zero room on the top side.

 

Bummer... That's too damn pretty to hide!

 

I know you are OCD lol but didn't want to use braided line?

 

I totally am LOL, every time I saw a bend that I didn't like I was like f it, trash it. My son kept telling me it's fine no one's even going to see it but it just sits in the back of my mind and I can't let it go.

I thought about ordering a braided line kit and NX makes them as part of another entire Nitrous Kit but I was having no luck finding an actual line kit. Every time I would look up steel braided line kits it would pull up what looked to be a kit but it would end up being 1 36 inch line or some crap like that.

I am sure I could have had a place make them but I was like I will give it a shot with the hard lines. I ended up ordering another 8 hard lines for 50 bucks so hopefully I don't screw too many more up LOL.

 

I am somewhat OCD...i feel so bad that the beautiful masterpiece you built will be hidden. truly looks great

 

Looking good!

 

Thanks guys, just waiting for some additional NX hard lines to come in with some extra fittings and I will have that part wrapped up.

 

Awesome work! I love nitrous... Lol

Me & my buddy built this kit here on my old stock K20a2..

 

That looks good man!

 

What bender are you using? I bought a couple and did most of my brake lines with this rigid bender and a smaller bender for the tighter bends.

 

Well I got my extra lines from NX but they were not flared. No big deal I had a 37 degree flare tool I bought like 11 years ago so flaring the lines were no problem. I also bought some cool 1/8 NPT 90 -4 swivel fittings. I've been using push lock lines for a lot of things but awhile ago I did all -4 lines for the boost solenoids and now I am doing it for the overflow bottle line, the blow off valve vacuum line and whatever used a push lock. I figure it will look and function a lot better than plastic lines that can break or melt.

The only thing I have to do now is the compression fitting on the solenoid side of things and basically do a final tightening on all lines. from there it should be ready to go back on once I get my motor back in and I can have my buddy Brian start the wiring. This will be controlled by Motec, so as I get to it I will post some more stuff up.

 

Looking good! Spray it, don’t say it!