My KLX 250 (turned 351) SF experience.....
#11
Believe there was a post from Bill on adv rider back when the 351 was new that said he lost a fraction of a hp going from the stock 250 head pipe to the "bomb". Think he had a supertrapp on the end at that time with (only) 5 discs, probably didn't matter what head pipe was on it. 5 discs wouldn't flow any more than 5 discs.
As far as the KTM, absolutely nice bikes they are. But they aren't built for longevity or extended road miles like the KLX. I have a crf20x that makes a ton more power and is lighter and quicker, but would never think about riding it cross state loaded with gear, just not made for that.
As far as the KTM, absolutely nice bikes they are. But they aren't built for longevity or extended road miles like the KLX. I have a crf20x that makes a ton more power and is lighter and quicker, but would never think about riding it cross state loaded with gear, just not made for that.
#12
#13
I'd also like to say that I did the airbox mod and there is NO difference before cutting out the screen and after the fact. In my opinion it is worthless and more trouble and perhaps more of a danger with no benefits.
I also drilled out the hole for the crankcase to breath but I also believe this to be worthless as the change in heat cycles is not fast enough for even the small hole to keep up with.
I did pull the smog lines but there is no power benefit to doing this. I did it just to clean up the bike and remove some worthless accessories and weight.
At Bill's request I did not remove the airbox cover as apparently someone tried removing it with the 351 kit and could not get the bike to run properly.
My air box cover did not have a snorkel as apparently the S version does. It does have a hole in it that is comparable in size to the snorkel to what everyone is upgrading to so I don't think the bike is starving for air.
I would be interested to hear what people have done to shed weight. At over 300 lbs this bike is 50 lbs. more than my KTM and has half the horsepower. I pulled the secondary pegs and the rack the previous owner put on. The new muffler should shed a few pounds as well. I think keeping the stock header pipe is as light as it is going to get. I am also going to bob the rear fender but the plastic doesn't really weight that much so not much weight savings there. My bike also has a fan that I never see come on so are people even bothering to use the fan setup? Does the S version even come with a fan? Doesn't seem needed to me. What about the overfill bottle for the radiator fluid? Does the S version come with that? I don't have them on my other bikes so is it really needed? What else are you guys doing to put the pig on a diet?
I also drilled out the hole for the crankcase to breath but I also believe this to be worthless as the change in heat cycles is not fast enough for even the small hole to keep up with.
I did pull the smog lines but there is no power benefit to doing this. I did it just to clean up the bike and remove some worthless accessories and weight.
At Bill's request I did not remove the airbox cover as apparently someone tried removing it with the 351 kit and could not get the bike to run properly.
My air box cover did not have a snorkel as apparently the S version does. It does have a hole in it that is comparable in size to the snorkel to what everyone is upgrading to so I don't think the bike is starving for air.
I would be interested to hear what people have done to shed weight. At over 300 lbs this bike is 50 lbs. more than my KTM and has half the horsepower. I pulled the secondary pegs and the rack the previous owner put on. The new muffler should shed a few pounds as well. I think keeping the stock header pipe is as light as it is going to get. I am also going to bob the rear fender but the plastic doesn't really weight that much so not much weight savings there. My bike also has a fan that I never see come on so are people even bothering to use the fan setup? Does the S version even come with a fan? Doesn't seem needed to me. What about the overfill bottle for the radiator fluid? Does the S version come with that? I don't have them on my other bikes so is it really needed? What else are you guys doing to put the pig on a diet?
#14
Bill's site is a good example and there are other dyno numbers out there that show a loss in hp and torque on the bottom end with replacing the stock header pipe. You might get more on the top end but I am concerned with bottom end numbers since the bike is used in the dirt and twisty corners of street riding. Why care about top end hp on a 250 bike? It isn't like you are going to go that much faster and relatively speaking the bike will always be slow for top speed anyway.
Last edited by zomby woof; 07-30-2010 at 08:49 PM.
#15
teeny car, sell the thing and give yourself a break. If we wanted a exc or te or wr or whatever we'd go buy one. The klx is what it is, your never going to make it into any more than what it already is. I own 9 bikes and they all fill a niche, the klx fills one nicely, it is what it is.
#16
Doesn't really matter, cause Mav' live in Coffs Harbour, and you don't....Buddy!
#17
I don't expect all 250 bikes to be the same but I am just surprised at how different they are for the same displacement! I tested at WR 250 this morning and it had more explosive power than the KLX does with the 351 kit at this point. Surely you can agree that from the factory Kawasaki missed the boat on this bike. Taking into consideration the KLX is a 351 displacement it still feels less powerful than a stock 250 bike from Yamaha.
If you want to compare something to a KTM, look at Huskvarna Gas Gas, their sister company Husabery, etc. The KLX is in a heavier class of bikes that lean closer to 50/50 street/trail use.
In the end, it seems you've already convinced yourself and are here purely for the debate. KTM is a great bike in its own right. If you like them, keep pushing your girl until she gets one.
Last edited by tremor38; 07-31-2010 at 02:47 AM.
#19
Oh I see...so because I don't come on here raving about a KLX 250 I have then I must be a troll? So this forum is for 250 lovers only? Maybe that should be posted as a sticky. Forum dedicated to those who have only positive things to say about their KLX 250. I thought it was for people who had or were interested in the 250? My bad I'll leave. Carry on raving about a piece of **** bike.
#20
Oh I see...so because I don't come on here raving about a KLX 250 I have then I must be a troll? So this forum is for 250 lovers only? Maybe that should be posted as a sticky. Forum dedicated to those who have only positive things to say about their KLX 250. I thought it was for people who had or were interested in the 250? My bad I'll leave. Carry on raving about a piece of **** bike.
Another note on the valves...my KLX now has over 20K miles and valves are still in spec since new. When the valves start to go out of adjustment, KLX riders are forwarned with hard starting and rough idling. If you let the KTM valves get too tight, grenade city because they are forced shut machanically rather than by spring.
This is one of the reasons the KTM makes more power though, so there's always a trade-off.
That said, the KTM is a reliable bike, but you MUST stay on top of the maintenance intervals...particulary the valves.
Good luck. I hope that you and especially SHE ends-up with a bike SHE likes. After all, the bike is for HER, isn't it?
Last edited by tremor38; 07-31-2010 at 07:44 AM.