I am a nitrous newbie for sure! Still have a few concerns before I bolt a system on to my bike!

Anyone have experience running a Ron Woods CDI on Noss?
I had decided that without a rev. limit that it would not be a good idea to keep running it when I added the Boss Noss system, but now a couple people are telling me its not a big deal?[img]i/expressions/face-icon-small-confused.gif[/img]

Thought I would post here and get a few more opinions, I'd rather not buy another CDI if its not necessary but I also don't want to damage what I have!

What would be the possible problems, huge overrev, timing issues?
Any other good alternatives than the Vortex or MSD?

I plan on starting out with a 15hp shot and work up from there after awhile, my current set-up is a TM45 with the HPR 12:1 and HR3's with shim under bucket's in by the end of the week.

 

You might do a little homework on what the advance is on on the rw box. I could see not having a rev limiter being a problem. I know the Vortex is alot of money but I think it worth it in the long run if it saves an engine. Be aware of you octane level and plug heat range. Detonation is really BAD and can tear up your motor with just one bad run. I dont have any experience with Boss Noss (yet) But I am pretty good with the Boondocker setup. Let me know if I can help.

 

I'd be more than just a bit leary to run Nitrous w/o a rev limiter, sooner or later it will catch up to ya, when we pulled Demons motor apart we could see where the valves had smacked his stock piston, a missed shift and an over rev and that's all it takes, a rev limiter is good insurance.

btw- hows that endcap coming?

 

KABOOM!!!!!!!! Get a rev limiter Nate

 

Nate,

There are plenty of people that run the Ron Wood Racing CDI box and large shots of Nitrous. HOWEVER, most of those guys are builders. The more you advance the ignition timing, the more your other variables are a concern. If you are something more than a weekend gearhead, then you understand those other variables and can compensate for them. But, the fact that you are hear asking, I will recommend the following ....

1) Get a Vortex ignition - Then you can switch between NOSS and Advanced curves.

2) Run no more than a 12:1 compression piston with at least 4pts higher octane than the manufacturer recommends.

3) And of course ... [img]i/expressions/face-icon-small-happy.gif[/img] .... get a nitrous system thats regulated - so, you'll have at lease one less variable to factor in.


What I have found is that the guys that start with a smaller shot of nitrous and a good kit, tend to start with somethign like a 15 or 20 shot. Then, after they get to know how to tune the fuel for various shots, then they make the motor ready for those larger shots. For the DS, you simply cant go much higher than 25hp or 30hp with the stock piston. Of course, when you get close to those numbers, it becomes more important to actually know what your shot is - some of the systems out there are variable hp, and you really dont know for sure what your HP is when you quad is in higher temperature environments. This is another reason to consider a regulated system.

 

Thanks guys, thats exactly what I was looking for[img]i/expressions/face-icon-small-happy.gif[/img]

As far as the vortex goes, I know that you can select from 2 curves on the fly with the handlebar mounted switch. Does the unit come pre-programed with all 10 curves, how hard is it to change them and can you select which 2 are controlled by the switch?

 

Yes the 10 curves are preprogrammed in. Changing is very simple, just need a small screwdriver. Your main performance map is always set to the first position. The other 9 are available for use under the number 2 spot on your handle bar switch.

 

Nate, diddo with everything said. I would not run a ron woods cdi with nitrous, at all, period! Two reasons. First, it has alot of advance. Thats ok if you want to run really good fuel, and be very watchful of everything going on. Second, no rev limit. That has already been stated. Like Major said, boom! Its just a matter of time. I have missed gears alot under nitrous. Not one engine part has been replaced because of it though, thanks to a rev limiter.

 

I am just getting ready to purchase and set up a Noss system this spring. Why are most builders running really high compression then maxing out at around 20 to 25 shot. Why not run lower compression like a Turbo motor does and run a lot bigger shot of NOS. It seem like the lost power of the lower compression would be eclipsed by the bigger shot. The only downside I see in my infinite ignorance is you would have to run on NOS all the time to have a performer.

Not trying to hy-jack, I thought this would be relevant.

Ron

 

Ok so what do you think the compression that were both running limit on NOS? Im running a 25 shot with no problems on 114 octane. How much do you think you would give up HP wise on all motor by lowering compression down to say 12:1 or even 11.5:1. By the way I am spraying on map1 not a retarded map.