Looking for some ballpark figures on big bore pred hp output. I've been looking through the site archives and Nicholas' page too but I havent found any real information.

Anyone have the approximate power of say a 540, 558, 574 or the big stroked 600+cc bikes?

I've heard rumours that someone around here either has or is getting one (dont know how big) and I'm curious to know how they run. I know there are fast preds, I just dont get to see many around here and I'm anxious.[img]i/expressions/face-icon-small-smile.gif[/img]

 

Just looking for a ball park. I know not all dynos are the same but it should be possible to get a range.

I ran acrossed a dyno run for a 558 that stated 85.6hp. I'd really like to know how I'm supposed to believe that a 58cc displacement increase yields that kind of power, regardless of what type of components you are using. I didnt see anything about it on nitrous or a turbo, but I really dont know. Any input on this at all or does no one care to tell me?

 

anything is possible if you have the money.

 

There are certain physical limitations on mechanical objects and fuctions. Money wont break the laws of physics or friction.

Apparently I do need some bank to get an answer though...[img]i/expressions/face-icon-small-wink.gif[/img]

 

you could always strap a Shaw-Fujikawa Trans-Light FusionAtomic engine to it [img]i/expressions/face-icon-small-happy.gif[/img] but thats top secret government stuff that were not suposed to know about.

but, they do make 600cc stroker kits for the 500 H.O. so im sure theres a big bore kit out there for your preddy. i belive stock preditor output is 50 something? so adding another 600cc's higher compression, and doing intake and exhuast crap could probebly knock you into the 80's if your lucky. that motor output is probebly very likely, but would involve alot of money and a few custom parts if you catch my drift.


a stock honda crf450r motor has a output of 57 horsepower, and that has titanium intake valves and a 12.5 compression, and short skirt pistions. thats with the restrictive muffler and and poor intake. so, 60's and 70's would probebly be easly feasable with available parts, upper 70s and 80s would probebly require a degree in mechanical enginering, a machine shop, and a hankering for building stuff out of expensive metal.

 

Maddog I don't believe those numbers either on the 558cc Predator unless he was on Nitrous but not even then. This past weekend Dollarbillz raced a Predator on NOS and beat him with no problem running just on 89 pump gas.

My own Predator dynoed at 36rwhp bone stock on the dyno we use. The owner of the dyno told us he has not seen one YFZ450 piped and jetted with the cam mod come close to 41rwhp on his dyno.

These are just results from a real dyno...

 

Thanks for the info Erine!

 

Thanks for the input guys. I saved the picture of the dyno I saw, dont remember where I got it though. Here is the graph: 558 dyno

 

the thing is, i dont see any shift points...

 

Your not going to, it suppose to be in four gear when conducting the test run.

But I do see some kind of NOS jump after the stock engine poops out.