Need interest in new product for KLX
Senior Member
1st Gear Member
Joined: Nov 2008
Posts: 542
"I will also make a proposal to members for a "Buy In" that would like to pre donate after we can guarantee the project to be under way. Whomever donates will get a discount on the unit."
You do mean pre-pay, rather than pre- donate correct?
A donation is considered a non refundable financial transaction for which no product would change hands.
If- you are asking for a deposit up front i am in, If you want me to fund your project with a donation, i am out.
You do mean pre-pay, rather than pre- donate correct?
A donation is considered a non refundable financial transaction for which no product would change hands.
If- you are asking for a deposit up front i am in, If you want me to fund your project with a donation, i am out.
Last edited by GaryC; Mar 3, 2011 at 01:47 PM.
Junior Member
Joined: Mar 2011
Posts: 6
looks like everyone is clammering for a ballpark price... any thoughts at all on that? you have to have an idea of an estimate.... I of course and brand new, hell, haven't even picked up the bike yet.... but when I do I want all my ducks in a row, i am a big "total cost of investment" kind of guy. I would be down for adding this to the mods list, but would like to know a basic idea of cost and labor involved.
Enlighten us....
Enlighten us....
Senior Member
1st Gear Member
Joined: May 2010
Posts: 231
After some of projects goals and design details have been clarified.
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Mikko
Senior Member
Joined: Sep 2009
Posts: 5,050
From: Abilene, TX
1st Gear Member
Please understand that I'm not trying to throw a wet blanket on this pursuit, but Swo, I'm wondering about a couple of your statements in the opening post.
When you say that the 300 has a lot more power than the KLX250S, what are we using for comparison here? We all agree that the bone stock 250S is anemic primarily because of intake, exhaust, and emissions requirements. Yes, I'm sure there are timing and other issues that come under the control of timing curves too, but we know that the 250S is one plugged up ***** from the factory. In reading many dyno tests of various KLX300/250's in different states of modification and even stock, I'm not so sure the power is that dramatically different.
Maybe the best source for comparing apples-to-apples is the Dynojet charts for dyno runs on the 250S and 300. Let's face it, almost no one runs a bone stock 250S, and anyone interested in running an aftermarket ignition won't be going to all this trouble and try to run that ridiculous stock 250S exhaust. But even with that soda straw exhaust, the Dynojetted 250S looks like it produces 19 horsepower. The Dynojetted 300 produces 22 horsepower. Now, 3 horsepower is 3 horsepower, and it's going to be noticeable on something like the 250S and the 300. However, I think once you plug on a performance exhaust with full airbox mods to the 250S, you're going to close that gap noticeably...and no, I don't have the figures to prove that, but I think most of us would agree that it's not a big leap of faith. Maybe I missed something or misread the Dynojet charts, so I would ask that others look at them to see if they would agree with what I think I'm seeing. Also a search of other sources on the internet seem to show some reliable dyno tests of stock and modded 250's and 300's.
Now, if you stick a 300 jug on a 250S with airbox mods and a full exhaust, that 3 horsepower difference has got to be diminished greatly. And if you go to a bigger bore kit, I think the few dyno charts we've seen exceed the power of the 300. I'm not saying that manipulating the timing curve of the 250S won't yield some results, but I think the comparison of the 300 in this case may be overly optimistic.
And Swo, on that 40 horsepower statement, maybe that needs to be clarified. I found one source that had dyno'd a KLX300 with a bore kit, extensive head work, custom cams, bigger carb, and all the other common mods, and it yielded 32 horsepower. And while we know there are slight differences in dyno results between dynos, I don't think you'd see an 8 horsepower difference in a full-house KLX300. A 40 horsepower KLX would probably not be that fun to ride on a trail, as I think the type of power delivery wouldn't be that great, and the somewhat bulletproof nature of the KLX would probably change dramatically.
Like I said at the start of my post, I think there is probably a decent gain/improvement in the power delivery with timing curve manipulation, but maybe the gains will be more in the power delivery rather than massive gains in peak power. Also I think one has to consider the fuel octane requirements that might come as a result of a mod like this. All that said, timing manipulation would be a worthy pursuit. I have an in-cab adjustable MSD ignition system on a big 4X4 that I own, and it's a very useful component.
Also Swo, on your comment about the 300 intake runner, could you tell me where you got that info? I'm not doubting that it might be true, but I couldn't find any info that covered that issue?
When you say that the 300 has a lot more power than the KLX250S, what are we using for comparison here? We all agree that the bone stock 250S is anemic primarily because of intake, exhaust, and emissions requirements. Yes, I'm sure there are timing and other issues that come under the control of timing curves too, but we know that the 250S is one plugged up ***** from the factory. In reading many dyno tests of various KLX300/250's in different states of modification and even stock, I'm not so sure the power is that dramatically different.
Maybe the best source for comparing apples-to-apples is the Dynojet charts for dyno runs on the 250S and 300. Let's face it, almost no one runs a bone stock 250S, and anyone interested in running an aftermarket ignition won't be going to all this trouble and try to run that ridiculous stock 250S exhaust. But even with that soda straw exhaust, the Dynojetted 250S looks like it produces 19 horsepower. The Dynojetted 300 produces 22 horsepower. Now, 3 horsepower is 3 horsepower, and it's going to be noticeable on something like the 250S and the 300. However, I think once you plug on a performance exhaust with full airbox mods to the 250S, you're going to close that gap noticeably...and no, I don't have the figures to prove that, but I think most of us would agree that it's not a big leap of faith. Maybe I missed something or misread the Dynojet charts, so I would ask that others look at them to see if they would agree with what I think I'm seeing. Also a search of other sources on the internet seem to show some reliable dyno tests of stock and modded 250's and 300's.
Now, if you stick a 300 jug on a 250S with airbox mods and a full exhaust, that 3 horsepower difference has got to be diminished greatly. And if you go to a bigger bore kit, I think the few dyno charts we've seen exceed the power of the 300. I'm not saying that manipulating the timing curve of the 250S won't yield some results, but I think the comparison of the 300 in this case may be overly optimistic.
And Swo, on that 40 horsepower statement, maybe that needs to be clarified. I found one source that had dyno'd a KLX300 with a bore kit, extensive head work, custom cams, bigger carb, and all the other common mods, and it yielded 32 horsepower. And while we know there are slight differences in dyno results between dynos, I don't think you'd see an 8 horsepower difference in a full-house KLX300. A 40 horsepower KLX would probably not be that fun to ride on a trail, as I think the type of power delivery wouldn't be that great, and the somewhat bulletproof nature of the KLX would probably change dramatically.
Like I said at the start of my post, I think there is probably a decent gain/improvement in the power delivery with timing curve manipulation, but maybe the gains will be more in the power delivery rather than massive gains in peak power. Also I think one has to consider the fuel octane requirements that might come as a result of a mod like this. All that said, timing manipulation would be a worthy pursuit. I have an in-cab adjustable MSD ignition system on a big 4X4 that I own, and it's a very useful component.
Also Swo, on your comment about the 300 intake runner, could you tell me where you got that info? I'm not doubting that it might be true, but I couldn't find any info that covered that issue?