Fun with nitrous
Grand HDF Member
Joined: Aug 2020
Posts: 4,798
Likes: 5,889
From: Knoxville
What I have done several times for customers. Set them up with a 25 shot and put nozzle pre IAT. This works great for the roll on racing crowd. I suggest spraying in 3rd to pull ahead and 4th if needed but once you put a couple of lengths on the guy. He's beat. Then if you want more. We can figure out a tuning solution for your needs then.
Thread Starter
|
Road Warrior
Joined: Mar 2013
Posts: 1,923
Likes: 587
From: Alorton, Illinois
If one wanted to try and save the engine from taking a big hit. Progressive controllers are an option. These controllers offer several features that come in handy over just a horn on/off.
Banned
Joined: Aug 2012
Posts: 14,866
Likes: 31,162
From: Whiskey Falls, Texas
Thats the trick for a street bike. No hard launch, just bring it in around 3rd
buddy has 162 hp 128. He hits third, C-ya! No burnouts, no clutch dump
just runs you down like youre sitting still! He did some clutch work to take the power, some suspension tweaks. Runs a belt is all I am saying. Do as you say on a bone stock bike and it should be fine. Get a little rush if you know whats cooking
If he's running 162 hp on a stock transmission it's just a matter of time. Transmission is a ticking time bomb. Third gear usually is the one that blows....
Grand HDF Member
Joined: May 2014
Posts: 3,850
Likes: 1,175
From: florida
One of the rules of thumb that i have for nitrous, is when you know that your are going to be using it on a build, you set your ring gaps up larger than you would for a NA application. I havent seen much with HD's, but with a lot of the Asian stuff i do, i have seen rings that butted up together and broke the piston ring lands.
Fortunately the bike i'm going to try this on, had the rings set up with this in mind! the bike is tuned with Powervision, but will also use a powercommander 5, with dual map capability to run a zero map while not on the bottle, and when on the fuel can be corrected and timing retarded. once you let go of the button, back to the zero map and the PV tune!
m
Fortunately the bike i'm going to try this on, had the rings set up with this in mind! the bike is tuned with Powervision, but will also use a powercommander 5, with dual map capability to run a zero map while not on the bottle, and when on the fuel can be corrected and timing retarded. once you let go of the button, back to the zero map and the PV tune!
m
Tourer
Joined: Jul 2018
Posts: 287
Likes: 12
From: Texas
What I have done several times for customers. Set them up with a 25 shot and put nozzle pre IAT. This works great for the roll on racing crowd. I suggest spraying in 3rd to pull ahead and 4th if needed but once you put a couple of lengths on the guy. He's beat. Then if you want more. We can figure out a tuning solution for your needs then.
Thread Starter
|
Road Warrior
Joined: Mar 2013
Posts: 1,923
Likes: 587
From: Alorton, Illinois
Tourer
Joined: Jul 2018
Posts: 287
Likes: 12
From: Texas
I tune the bike without nitrous. I aim for best power on rich side of things. I then put nozzle pre Inlet Air Temp. Nitrous will bring down intake temps and when this happens. Fuel is added. I spray and check on my dyno. Small shot and placing the nozzles where I do is not as efficient as closer to valve. 15-18 increase and I have never seen 25.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread Starter
|
Road Warrior
Joined: Mar 2013
Posts: 1,923
Likes: 587
From: Alorton, Illinois
I buy a lot of things from DynoTune. The kits are nice and complete. I kind of recommend them, because depending on application. I usually source the style of nozzle I am after elsewhere. Yes, I have drilled and tapped the bottom of the TB in bellmouth area. Which wants a 90 jet. I have also drilled and tapped the air cleaner for straight jet. Sometimes it depend on how much customer wants it to show.
Something else to think about is bottle fill. The small bottle (12oz) are nice to hide but I wont fill them with my Nitrous station. You loose a lot. Better to buy a pig bottle and fill the small ones off that.
Something else to think about is bottle fill. The small bottle (12oz) are nice to hide but I wont fill them with my Nitrous station. You loose a lot. Better to buy a pig bottle and fill the small ones off that.
Tourer
Joined: Jul 2018
Posts: 287
Likes: 12
From: Texas
I buy a lot of things from DynoTune. The kits are nice and complete. I kind of recommend them, because depending on application. I usually source the style of nozzle I am after elsewhere. Yes, I have drilled and tapped the bottom of the TB in bellmouth area. Which wants a 90 jet. I have also drilled and tapped the air cleaner for straight jet. Sometimes it depend on how much customer wants it to show.
Something else to think about is bottle fill. The small bottle (12oz) are nice to hide but I wont fill them with my Nitrous station. You loose a lot. Better to buy a pig bottle and fill the small ones off that.
Something else to think about is bottle fill. The small bottle (12oz) are nice to hide but I wont fill them with my Nitrous station. You loose a lot. Better to buy a pig bottle and fill the small ones off that.
Last edited by Weeble1; Jul 7, 2023 at 05:35 PM.