Just wondering, as my conversion project gets closer and closer I'm wondering about these massive oversized conversions (88-100 cu.in.) requireing bored cases and so forth. Since I'm only going for 1200 conversion with matching valves, and cams at a later date, would any further HP enhacement be more cost effectively achieved with No2 bottle?

In the long run, I think it is moore cost effective to go ahead and do the head work when initially doing the conversion. Buy one set of pistons,rings and gaskets vs 2, plus the down time and labor of doing it twice. Just make sure that the folks doing the headwork know you are considering the NO2. I'd givea shout to Narley if your curious about nos.

There is no substitute for cubic inches. It's reliable, always at your command, and no one will know if it's an 883 or a 1450.

Nitrous is OK when used as directed but you have to find a place to put the bottle and they do go empty. And if you run into a lean condition, POP go the pistons.

There is no substitute for cubic inches. It's reliable, always at your command, and no one will know if it's an 883 or a 1450.

Nitrous is OK when used as directed but you have to find a place to put the bottle and they do go empty. And if you run into a lean condition, POP go the pistons.

Hi Crim, I've seen a number of remarks in various threads about nitrous......why on a bike???????

Hi Crim, I've seen a number of remarks in various threads about nitrous......why on a bike???????
because you can ........

I personaly don't like no2 on the street , this is no place for the stuff
too many kids out there think its the instant answer to power and then they get in a jam when they get that rush of power and get them selfs hurt or killed

I'm not against nos but lets keep in off the highways and byways

because you can ........

I personaly don't like no2 on the street , this is no place for the stuff
too many kids out there think its the instant answer to power and then they get in a jam when they get that rush of power and get them selfs hurt or killed

I'm not against nos but lets keep in off the highways and bywaysNO WAY! NOS ROCKS! INSTANT POWER! GREAT RUSH! :clap :bump

Cause u said so nightboy, I'm goin straight to the Indy an gett'n me one of dem NOS kits.....need a couple more ponies under the hood of my Ironhead...she seems a little sluggish dez daze....an I'll put a face mask on the handle bars an she'll FUNNER to ride tooo....Mike 74xlh :smoke

there ain't no substitute for cubes....

I stopped being fed off the bottle years ago...... ;)

Stevo you owe me a beer... it just spit mine all over the keyboard laughing at your avitar.... hahahahahah! :laugh

ya ain't goin fast untill ya got ya knee down ;)

Something fishy in that picture...............that's a left side steering wheel?????

:shhhh

Something fishy in that picture...............that's a left side steering wheel?????

:shhhh

Wake up Dar. It's in the land down under. Anything's possible there :shhhh

As mods go, I've always believed it's important to know what your goal is. Do you want light to light acceleration, screamin' freeway top speed, 1/4mile ets or bragging rights? The answers those questions are the determining factors. Once the goal is established, all at once is the cheapest way to go. Piece meal conversions cost more and yer in a constant state of tear down. Me? I'd rather be riding. :tour

Yeah the avatar isn't me.....

just another one I stole 'cos I thought it'd lighten up someones day and my usually dry responses... ;)

Thanks to all for the input. If there is risk of engine damage then it is pretty much out of the question. I got interested iin the subject because I was reading that many of the old piston powered fighters of WWII used it for a sudden burst of speed in dogfight situations. But then again aircraft engines are completely different, and have different operating parameters. I'm getting ready to spend a whole sh*tboat load o money on a conversion and heads. Not going to take the slightest risk screwing things up.

I think the key point would be "what do you want the bike to do?".

If you want BIG HP numbers, i.e. performace that drives your eye balls deep into their sockets, take a hard look at the big bore kits from Nallin for example. If this is what your want, so be it.

If you only want to do a simple 883 to 1200 upgrade, that's a different matter. Your options range from boring the cylinders and replacing the pistons, to replacing valves, and/or heads.

Once you get an idea of where you want to end up performance wise, you can then select the path to minimize cost, downtime and effort. The only limiting factor for performance is $$$$.

My point is, pick a path and stay on it. If you know the end point you can better leverage the parts that you purchase. Anything else is like trying to nail Jello to a wall ...

Thanks to all for the input. If there is risk of engine damage then it is pretty much out of the question. I got interested iin the subject because I was reading that many of the old piston powered fighters of WWII used it for a sudden burst of speed in dogfight situations. But then again aircraft engines are completely different, and have different operating parameters. I'm getting ready to spend a whole sh*tboat load o money on a conversion and heads. Not going to take the slightest risk screwing things up.
Des...Get the conv., and a good valve job to match, and your bike will have 75/80 hp at the rear wheel. In 1st and 2nd the front wheel will lift a little and I believe you'll say "WOW, that's enough power for me!"
I know it was for me.
Jim

NOS isn't just something ANYONE should throw on a bike without understanding how to tune it and use it. Then again, I would suggest a new rider jump on a big torque bike and wack the throttle either. There is nothing wrong with NOS on the street and nothing any more dangerous about NOS than a naturally aspirated bike making the same power. You twist the throttle on a 120 hp bike and it doesn't matter if 36 of those ponies were the result of a shot of NOS or not.

If you install a 'wet' system and tune it properly, then the risk of popping a piston is mute. Dry systems are only for computer controlled fuel injected engines that have the ability to adjust for the additional O2 being injected.

Des...Get the conv., and a good valve job to match, and your bike will have 75/80 hp at the rear wheel. In 1st and 2nd the front wheel will lift a little and I believe you'll say "WOW, that's enough power for me!"
I know it was for me.
Jim


That's exactly what I'm doing. Went and visited Annabelle in the shop yesterday. Wasn't easy seeing her all torn down. But it did ease my anxiety a bit. :laugh The reason I'm doing the conversion at all is for more roll on snap for passing on the super slab. Nox bottle was a thought doing that rather than a conversion. I think you're right. The conversion will probably be more than enough power.