This ought to get a few questions :laugh

http://xlforum.net/photopost/data/500/medium/Patricks_Dyno.JPG

Wow. Nitros? Turbo? Both? What?

Just NOS and not even tuned in. This is my brothers bike. He has pulled the NOS off and is sending it to me (hopefully soon:)). I'm anxious to put it on mine and really fine tune the fuel mixtures and see what it is capable of.

what else was done to the bike???

The bike is an 883 with 1200 conversion. Using the SE 10:1 conversion pistons, bone stock 883 heads, SE bolt in cams, stock 883 ignition, Vance and Hines Straightshots, SE a/c, and carb rejetted.

Notice the huge dip in the torque curve? That is a result of the pipes and reversion. Even when he hit the NOS, it caused a huge dip. I'm hoping that since I have eliminated that dip on my engine (identical set up) and have really fine tuned my a/f ratios, that when I hit the NOS, it'll get closer to 110 to 115 ft lbs and 110 hp.

Shu, those numbers look good, the reversion not so good.


Careful with the NOS it's like playing russian roulette on
motor that not setup for it. Hope the purge thingy works:banawala

Actually, I am running rather small HP jetting on this setup and the cams profile work very well with NOS. THe pistons are very strong pieces and HD crank and rods are strong. You can typically be safe on the engine by going with about half the HP gain the engine makes without NOS. BTW, the thing is a blast (beast) to ride, plus it tends to limit comments about it beign a 'girls bike' ( :) I couldn't resist). Definately not a button you want to push in second gear...it's a third gear and up toy on the street:)

Good luck SHU , you lucky bastard. Looks F'ing fun!!!

Looks like 30 more ft lbs and HP (1.37 HP per cubic inch). Not too shabby! What kind of kit? Factory or homemade. Have used many bottles of NOS over the years in just about everything but a v-twin. For auto racing I bought the pieces and assembled a custom kit for my personal use but I was a NOS WD dealer at the time. I would run a little fat on the fuel and seemed to give better longivity and the exhaust temp was cooler. How about head gaskets? Is this a problem with H-D on NOS? What kind of intake manifold? What about fuel? Racing gas? Any component info would be appreciated.

This is the NOS kit for Harley's. It is adjustable up to 36 hp gains. The kit comes with the fogger nozzles, so you have to dill the intake manifold. He is using the stock intake. The dyno he ran it on did not have a/f reader, but the jetting is match according to the NOS instructions. I plan on fine tuning the jetting on my local dyno once I get it installed on my bike. The head gaskets held up just fine, but he is running the Screamin' Eagle ones (metal). This is on pump gas. Ignition timing is retarded a couple of degrees. All in all the system is really nice. The only thing it didn't come with was a bracket to mount the bottle, so he had to custom make one for the front left down tube.

http://xlforum.net/photopost/data/500/NOS.jpg
http://xlforum.net/photopost/data/500/medium/HD_NOS.jpg

I saw this quote on the Holley website (Holley makes NOS products) and thought it was relavent to this discussion.

Touch the button and your “hawg” turns into a wild boar. With a super strong bottom end, Harley engines can take more pushbutton horsepower than most. And, the fully adjustable Fogger™ lets you choose how much is just right. With the jets included in each Harley kit, you can expect to see a 30% to 40% increase in horsepower and torque. Plus, the Fogger™ can be adjusted for even more (or less) power by simply changing jets if your engine is modified. Easily installed in an afternoon, the Fogger™ kit comes complete with everything you need; including detailed, easy to follow instructions, Nitrous and solenoids, Fogger2™ nozzles, filters, fittings, tubing, pumps, T–fittings, jets, switch, hose, and all other hardware necessary for a complete installation. Please contact the NOS Technical Support Department for jet recommendations before you make any changes.

all i can say is hang on