Good comments, guys. Scabber, you and I see eye-to-eye on priorities--chassis first. Burns, that's a good summary of the basic tweaks, though I'd recommend welding up the crank with any significant mods.
Are you aware that there's a bolt on 750 kit? I think Mike's sells a version that people are happy with. Regarding all the porting and polishing and tuning and swapping parts, and the more radical strategies, I've yet to see one dyno result from it posted here, and that can only be because it would be embarrassing considering the time and or money invested.
It occurs to me that personal satisfaction and "racing" are the only two reasons people do just about anything The actual general consensus is if power for its own sake is the thing you're after, consider a bike that fits your style better. I ride an XS650 because it's easy and cheap to keep it running. And good-looking, to me. And interesting to other riders who see it. And...
id like the option to cruise at 100 but dont want to sacrifice getting to that number
^That's not my field, so I needn't be embarrassed. But I'll tell you, I notice there's still no dyno chart. I think we came to this before and eventually just dropped it. You couldn't or wouldn't tell me how much of a hp gain you got from porting. There's nothing outrageous about that request.
Objective measurements is in my field, and also I know how deceiving the senses alone can be. My XS has twice the horsepower some days. But I know it's just me. If you now want to call me names just call me a skeptic. Nothing personal. Truly.[/QUOTE
And you will never see a dyno run from me either,waist of time and money as I know what to expect but every combination will yield different outcomes due to varibles in parts selection,etc but if you're looking for specifics contact Craig Weeks. If porting yields a flow gain,typically you can take the flow percentage and rough estimate the power gains over stock,there are formulas to do just about any calculation to theroize.
id like the option to cruise at 100 but dont want to sacrifice getting to that number
I hoping your comments were meant as a joke cuz who in their rightful state of mind would want to cruise at those speeds on an XSid like the option to cruise at 100 but dont want to sacrifice getting to that number
Marketing parts isn't one of my specialties nor do I care about the skeptics who've never attempted a DIY porting job nor understand that these XS"s are a high revving power plant air pump and any attempt to maximize flow or velocity can be beneficial in building Hp, keeping the power drive sustained for racing purposes or what ever.Gee, Jack, when it comes to porting outcomes, wouldn't dyno numbers influenced by a whole slew of factors be a whole lot more objective and informative than those subjective, impressionistic flow bench numbers you put up? You know, dyno numbers, like those charts from Jerry Heiden that show all the fine results you aren't gonna see? ROFLMAO!
Gents, when Jack puts up flow figures that make Craig's jaw drop, he's got nothing more to prove.