nitrous kit - first run

[johnnycrash]

I just took three 160+ mph blasts down my local drag strip road (a deserted, dead end road in the middle of BFE) with my new N20 kit installed.  I honestly am not sure if it was working or not.  I have tested the whole system as much as I can while in the garage, but since I am using an RPM window switch and a TPS switch I have to be on the bike to truly test it.

I only have the 15 hp jet in there, so that is barely a 10% increase in power.  Since my system won't spray till 8000 RPM I wonder if it worked and I didn't notice it, or if something isn't working.  

Guess I'll try the 30 hp jet next - surely that should be a kick in the pants that won't go unnoticed.  Naturally we've got rain rolling in - probably won't be able to ride again for a week.

So ... as of right now - I'm not sure if I'm a nitrous virgin or not.

 

[Mr Brown]

Is the solenoid closer to the bottle or nozzle? If it's on the bottle end, the hit is far softer. Buddy of mine thought his spray wasn't working until he dyno'd his 12. The solenoid was so far from the nozzle, he couldn't feel the hit.

 

[johnnycrash]

(Mr Brown @ Nov. 04 2006,09:09) Is the solenoid closer to the bottle or nozzle? If it's on the bottle end, the hit is far softer. Buddy of mine thought his spray wasn't working until he dyno'd his 12. The solenoid was so far from the nozzle, he couldn't feel the hit.

My solenoid is in the front corner of the trunk - so it's about as far away from the nozzles as it could possbly be. After reading your post, I bet that AND only a 15 shot could be why I'm not feeling it.

Since I've got mine coming on at 8000 RPM the bike is already well up in it's powerband anyway. I've also got it lowered and strapped so it doesn't want to wheelie too much anymore.

It would be easy to move the solenoid closer to the nozzles, but I'm not sure a reduced "hit" isn't a good thing (although not as much fun).

Thanks for the feedback!!!!

 

[Mr Brown]

 

[chevelle]

what size jet are you using ?

what is the tempature ?

my guess is low b/p and small jet,is the problem

until your eyes are open like silver dollars,and your heart is pounding  

you have not expeirenced nitrous

 

[johnnycrash]

I was running the smallest jet they gave me on that first run - supposedly 15 hp - a .028 maybe? I just installed the .034 jet which is supposed to make @ 30 hp but I haven't ridden it yet and it's raining now.

If this next test ride doesn't produce the effects that you describe then I'll know something's wrong. I'll get it there eventually - and right now the suspense is $&%*^ing KILLING me!!!!!!!!!

And Chevelle, I stole your idea for the arming switch mounting spot - that's the perfect place for it. Thanks!

 

[johnnycrash]

(johnnycrash @ Nov. 04 2006,11:49) I was running the smallest jet they gave me on that first run - supposedly 15 hp - a .028 maybe?  I just installed the .034 jet which is supposed to make @ 30 hp but I haven't ridden it yet and it's raining now.  

If this next test ride doesn't produce the effects that you describe then I'll know something's wrong.  I'll get it there eventually - and right now the suspense is $&%*^ing KILLING me!!!!!!!!!

And Chevelle, I stole your idea for the arming switch mounting spot - that's the perfect place for it.  Thanks!

edit: oh yeah - and the outside temp is only 45 degrees!

 

[chevelle]

glad the switch location works for you

the 45 degree temp is a big part of the problem,at that temp b/p will be very low,the temp here is 46,with a very full,read slightly overfull, bottle pressure is 640

if your bottle is less then full, pressure may be closer to 550,which is probably cutting power in half,so that is why your first nitrous outing was a flop....don't worry it will get better......much better !!

if your pressure is that low (say 550) you would have to use a .036 or thereabouts to get the same power a .028 would give you with good pressure

a pressure gauge is something you need to have,with nitrous everyting revolves around available pressure

 

[johnnycrash]

Jesus!  

Well ... I took the bottle off the bike right after Chevelle mentioned the air temp and got it heated to probably a little less than room temp, which is way better than the 35 or 40 I'm sure it was before.  I also moved up to the .034 jet.

I just got back.  Going down my road, 2nd gear around 6k.  I just flipped the switch and rolled the throttle on and at 8k everything just went into fast forward.  The front end started coming up so hard it was trying to loop, and I had my strap cranked down hard in front.  It usually won't begin to lift the front end just from a roll on then.  

I rode around for about 30 minutes, hit the N20 about six or so times.  I could tell the hits were getting smaller and smaller as the tank presumably got colder and colder.  Even the small hits are cool, but that first initial hit was amazing.  

I see a bottle warmer and a pressure gauge in my near future, as well as finding a more forward location for my solenoid.

Thanks again for all the help, guys.  This board has proven priceless in solving all the little challenges that projects like this always present.

 

[chevelle]

CONGRATS !! nothing like the first good hit

while you have your wallet out  

if you are using the oem chain,upgrade to something topshelf,the stock clutch springs will be ok for a while,with the soft hits,but will need to be upgraded if you step it up,a shift light is nice also....enjoy !!

 

[johnnycrash]

HAHA - my first good "hit".  Actually, I imagine a crack addict feels about like I do right now - can't F*%$(ing WAIT to do it again.  OMFG that was awesome - now that it's soaked in a little I'm realizing how cool this all is.

Thanks for the info on chains, etc.  I was already planning on Brocks clutch mod and I already have a slave cyl support. I'll swap in good plates when I have the clutch out.

My bike is going to the tuner in two weeks or so for a custom map - my tuner wanted the N20 on there before he mapped it.  I'm installing my airshifter (props to Extremefun1300 - at cycletek.com) before then also.  I have a 600 swingarm that's going out to Thompsons after New Year for a +6 although I'm going to run it at +4.    

So we're getting there - and having more fun along the way than I even thought I would.

Sorry so long - just on cloud nine right now.  My g/f says she hasn't seen me this happy in weeks.

 

[chevelle]

i almost forgot about the slave support,a must have with heavy springs, use oem clutch plates/steels they are the best

tons of good info over here
http://www.suzukihayabusa.org/forum/index.php?board=39.0

 

[chevelle]

forgot to mention,when you get the pressure up to where it needs to be,the hit will be much quicker

until you stretch the bike some,leave the solinoid where it is to keep the hit on the soft side,and easier to control

 

[BrutalBusa]

With your NO2 coming on @ 8000 RPM's and the solenoid in trunk, It takes a while for the NO2 to get to the engine. Just about the time it's starting to hit hard it's time to shift. I noticed a huge difference when i moved my solenoid to a mount i made that bolts under the throttle bodies. You could also try turning it on at a lower RPM..maybe 6000 or so...just my 2 cents worth.
A busa is pretty quick to start with.....anything amount of Nitrous will make you pucker up on the seat a little bit more....Have fun!

 

[johnnycrash]

It does seem like 8000 is a little late to start spraying. What RPM are most of you guys spraying at?

I think I'll leave the solenoids where they are till I get the bike stretched - but eventually I'm sure they'll be moving forward.

 

[psycobusa]

 

[GoldenChild]

bring it in about 4500-5000 to get out of it what you brought it for.

 

[chevelle]

the general rule is no less than half of redline

take a look at your shift recovery point rpm,not much point to be spraying to much below that rpm

for a street bike that spends 99 % of the time off the bottle,this will keep your map as clean as possible

the busa, btc box 7 k or higher
the 12 pc, no less then 8 k

 

[321CYA]

Hey Johnnycrash
Welcome to the madness called NOS

Couple of notes to remember, 1. if you havent already noticed the stretch on your Stock chain check it....as NOS loves chains... 2. I would wait on the position of the solenoid until you get the right setup that you desire..ie bigger jet and Dyno to check A/F. because if you think youre having fun now..

WAIT till you position this solenoid it closer to the airbox.

P.S. are you going to put a airshifter? Or the CO2 shifter? Because you wont be fast enough to bang thru the gears without a lot practice..... Almost forgot, think about a progressive controller much easier to ramp up the Juice...

Hey Chevelle I see that your stretched VERY NICE Bro

 

[TheNOSman]

(johnnycrash @ Nov. 04 2006,18:55) It does seem like 8000 is a little late to start spraying.  What RPM are most of you guys spraying at?  

I think I'll leave the solenoids where they are till I get the bike stretched - but eventually I'm sure they'll be moving forward.

I don't use the RPM window switch but I'm spraying right off the line with a progressive controller.  

My 2-step launch RPM is 7,000 though.  Welcome to the woderful world of NOS!