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Old 10-22-2012, 05:19 PM   #53716
mgorman
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Quote:
Originally Posted by sion View Post
what you trying to do, get me killed?

anyway, I only got around to messing with the XR today...have verified that A) I have spark: B) the carb is pumping gas into the intake and C) still wont start...

Quote:
Originally Posted by Gonzo_Matt View Post

Sion, I would take a look at valve springs and adjustment as well...

I am with Matt, it is very possible you have one valve that has tightened or you over tightened it when you redid the motor last time. It doesn't take much for the valve to leak. Make sure on the range, they are adjusted to the loose side of the tolerance so the intake valve closes a bit earlier than if on the tight side, might as well try to get every ounce of compression you can.

The 84 XR200R uses a sleeved down version of that motor and when I replaced the valve cover gasket the motor wouldn't start. The new gasket was thinner, enough so the intake valves leaked. I adjusted them and it fired first kick.
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Old 10-22-2012, 05:40 PM   #53717
Gonzo_Matt
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I have had 3 engines (non motorcycle) fail to start after having run fine and the culprit was weak valve springs. They were adjusted fine, the spring had just lost enough tension to allow compression to leak out.

I would do a leak down test as well, maybe with the rockers off completely. What does the plug look like?
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Old 10-22-2012, 05:40 PM   #53718
Danjal
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Anyone have any thoughts on the klx450r? I've got a shot at getting a barely used one for a hell of a price.
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Old 10-22-2012, 05:41 PM   #53719
BOB RAMSAY
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Originally Posted by S2P View Post
Bob I rode the 500xcw last year at the Turkey Trot/demo day. It was a smooth power,I say like driven a tractor, it putted me around when I wanted to go slow,but no arm straightening jerk when I gave it the gas. Now mind you I was on the demo loop,but it wasn't at all like a 500 smoker with the power band kicking in.
Not a CR500 - thankfully. They were a trip! They were fun for a good shot of adrenaline - more motor than I needed to pilot between trees and rocky creek beds.

What I'm starting to learn with my KTM is that it's just about impossible to stall the engine. Probably can roll off a 3rd gear start with a little clutch work from a dead stop without much complaint. I kept going up hills at the Baby Burr DS - a gear too tall - and all I had to do was roll in some more throttle if I got out of shape - no clunka-clunka-clunk - just motors up those long hills. You mentioned above that other thing I like about mine - works well at almost a walking pace, mid-range that you never have to think about shifting - and then there's some scary stuff at the top end. I just short shift - always. Keeps the shorts clean!

BR
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Old 10-22-2012, 05:44 PM   #53720
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Quote:
Originally Posted by Moparmanpete View Post
If you want you can borrow my compression tester, Let me know and you can pick up at my work tomorrow


Pete

that would be excellent...I'll stop by about 2:15...Mr. Tire on Memorial, right?
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Old 10-22-2012, 05:47 PM   #53721
mgorman
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Originally Posted by indypup View Post

As far the YZ426, like Mgorman said...it has too much power for the type of riding you do with it. It would be fun watching mgorman on the MX track with it though. Now that would probably a video people would like to see. ;)


That depends on what he's going to do with it. Big bikes have more power than the average person needs, not necessarily all the power is bad. Big bikes can be de-tuned so there is still good bottom end and the hit removed. You can install a Supertrapp style silencer that has the discs. More discs, more top end, less discs, better bottom end and taking away the top end. If the gasses can't get out, neither can the horse power. I used Supertrapp discs to tune the Megaphone on the Can Am 560 I used to race between MX and Scrambles.

You can also do what Yamaha and other companies do to tame bikes or make them meet sound levels

1) Install washers of various hole sizes between the header and silencer to choke down the flow. (Cheap man's version of what a Suppertrapp does) Some put them between the header and head but that might be harder to seal. Put a Stock WR silencer on it.

2) Throttle stop from a WR

3) Long pull throttle tube, slows down how fast the slide opens

4) Larger Leak Jet to blow off the charge from the accelerator pump.
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Old 10-22-2012, 05:48 PM   #53722
swingset
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Quote:
Originally Posted by Danjal View Post
Anyone have any thoughts on the klx450r? I've got a shot at getting a barely used one for a hell of a price.
Good bike, from everything I've heard or read. Suspensions were said to be its weak point, but that was coming from racers...trail riding it's probably sufficiently plush and compliant.

http://www.dirtrider.com/tests/off-r...450r_web_test/
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Old 10-22-2012, 06:03 PM   #53723
mgorman
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Anyone have any thoughts on the klx450r? I've got a shot at getting a barely used one for a hell of a price.

I believe Duckassasin1 races one

Swing, were these the Suzuki made Kawasakis?
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Old 10-22-2012, 06:15 PM   #53724
Fleece Johnson
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Originally Posted by dox View Post


Thanks dood

Still not going to "go for a ride" in your white candy van, no matter how many more times you ask.
Lookin good Dox!

You do anything special to drop all that weight??!?!?
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Old 10-22-2012, 06:21 PM   #53725
Moparmanpete
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Quote:
Originally Posted by sion View Post
that would be excellent...I'll stop by about 2:15...Mr. Tire on Memorial, right?
Yep
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Old 10-22-2012, 06:25 PM   #53726
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Quote:
Originally Posted by mgorman View Post
I believe Duckassasin1 races one

Swing, were these the Suzuki made Kawasakis?
Nope, that's the KLX400, which was a rebadged DRZ.
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Old 10-22-2012, 06:32 PM   #53727
Danjal
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Nope, that's the KLX400, which was a rebadged DRZ.
Weren't the 400 cc kiwi quads also rebadged suzukis too?
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Old 10-22-2012, 06:40 PM   #53728
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yup
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Old 10-22-2012, 06:55 PM   #53729
dox
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Quote:
Originally Posted by BOB RAMSAY View Post
She's a beaut! Your opted for the 'Big Boy model' I see.
Thanks, Bob. Appreciate the tips, maintenance isn't my strong point but will be a bit more diligent with this bike. I don't think you'd find my 530 to be all that much different than your 450, should be the same XC4 motor. Would like to take a spin on the new fuel injected 500 bike though.
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Old 10-22-2012, 07:01 PM   #53730
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Lookin good Dox!

You do anything special to drop all that weight??!?!?
Thanks, Andrew.

Nothing really "special". Two food scales and everything gets measured down to the gram. Food labels are closely watched, use a smartphone app to scan barcodes of food packaging and track daily intake. Eliminated some very specific bad habits and foods. Plotted progress on an Excel spreadsheet like any good nerd should.

Still have a little way to go.
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