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Old 02-10-2013, 10:55 AM   #33046
rickypanecatyl
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Joined: Jan 2008
Location: Kuala Lumpur, Malaysia
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Quote:
Originally Posted by skierd View Post
Because I'm not sure what to do with it at this point?

.

Couldn't you just do a 290 big bore? I have no clue but that might be cheaper than stock?

Kansas Bob - That was really... interesting!
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Old 02-10-2013, 11:15 AM   #33047
Reposado1800
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Joined: Dec 2006
Location: 5th and Main
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Quote:
Originally Posted by skierd View Post
Decided that before I really truly decide to keep her or not, I better see how the old girl's motor's doing. To that end, its time to do a compression check to see how well the last 43,000 miles have treated her.

Step 1 - start the motor and let everything warm up

step 2 - take the seat, side panels, front wing panels, and gas tank off

step 3 - remove spark plug

step 4 - realize that the compression tester you bought doesn't have a 10mm thread adapter, you know the one you need to do the test

step 5 - Run to every hardware store, auto parts store, and motorcycle dealership in town looking for an adapter, in vain

step 6 - Admit defeat, buy the gauge kit that's 2x as expensive as the one you first bought a few days ago, and return home

step 7 - put the old plug back in, coil back on, and gas tank back on. Start motor again to warm it up again.

step 8 - Pull it all apart again.

step 9 - Thread in the compression tester... and... and...




She's not quite dead, but she's hurting very badly. Best dry compression it could muster is 75psi. Added some oil down the bore, and it spiked to just over 100psi. Spec is 121psi, low of 105, high of 135.

[click to show pic]




Its not entirely unexpected, as before I put her up for winter she felt a little down on power and had been dirtying the oil faster than normal. I was hoping it was just clutch wear causing the oil to go bad, and that the power thing was just my imagination, but the reality is the motor's old and tired. Glad I found it out not, before I spent a bunch of money on the suspension, but still..

Not sure what to do at this point. Right now, I'm just sad. [click to show pic]
Just re-ring it and solvent test the valves to make sure they are sealing.
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Old 02-10-2013, 01:50 PM   #33048
ba_
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Location: Westchester County, New York
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Quote:
Originally Posted by TwilightZone View Post
>"I'm sensing that "

Heh... I put mine together the wrong way too... the first time.
Now I'm confused

Here is what it looks like if the short spacers go in the front:



Which makes the rack look like this - the front of the rack hits the fender



Here is what it looks like if the short spacers go in the back (my first attempt) - nice and balanced looking



Which makes the rack look like this:



The latter is correct, right?
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Old 02-10-2013, 02:21 PM   #33049
skierd
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Joined: Jan 2008
Location: Fairbanks, AK
Oddometer: 2,957
Quote:
Originally Posted by rickypanecatyl View Post
Couldn't you just do a 290 big bore? I have no clue but that might be cheaper than stock?

Kansas Bob - That was really... interesting!
A new piston, ring set, wrist pin and circlips, base gasket, head gasket, valve cover gasket, and new bolts for the head and cam cover ran about $160. Best price I've seen on the Athena is $750. Even if I end up needing a new cylinder (crossing my fingers that I won't) its another $350 or so for the factory piece. More than likely I'd try to return or resell the piston set and send my cylinder to Thumper Racing, and send them the head too to clean it up as well.

I ordered:
New piston, rings, gaskets, pin, clips, and bolts, plus a timing chain just in case (it was only $18)
New clutch and throttle cables
New thermostat (motor's coming apart, why not)
New factory tool kit (I love the crappy little thing, it actually works well trailside in my experience with a few small supplements)
A couple drain plugs and gaskets
A couple oil filters
R kickstand and spring for the eventual set of dirt wheels
Oil seal and o-ring for front sprocket (pretty sure mine's leaking)
some misc blind (GYTR timing plug covers and 1-1/8" handlebar mounts)
and a whole host of misc bolts and hardware that I know are either corroded, somewhat rounded, or been used a lot and should be replaced.


But first I have to get the $(&#ing swingarm off. Here's a hint kids... TAKE THE DAMN SWINGARM OFF AT LEAST EVERY 6 MONTHS! I let mine ride for close to a year and a half, and its frozen solid. I fortunately found a used swingarm on ebay complete with a new pivot bolt and bearings for less than the price of a new bearing set from Yamaha, so if worst comes to fun I'll end up cutting the bastard out.
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Old 02-10-2013, 03:40 PM   #33050
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Quote:
Originally Posted by skierd View Post
plus a timing chain just in case (it was only $18)
Best 18 bucks you ever spent.
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Old 02-10-2013, 03:51 PM   #33051
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Are the bolts the same length?



The latter is correct, right?
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Old 02-10-2013, 03:55 PM   #33052
ba_
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Quote:
Originally Posted by TwilightZone View Post
Are the bolts the same length?
They are. All 70mm
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Old 02-10-2013, 04:24 PM   #33053
Llamaha
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Location: Melbourne Australia
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Quote:
Originally Posted by skierd View Post
But first I have to get the $(&#ing swingarm off. Here's a hint kids... TAKE THE DAMN SWINGARM OFF AT LEAST EVERY 6 MONTHS! I let mine ride for close to a year and a half, and its frozen solid. I fortunately found a used swingarm on ebay complete with a new pivot bolt and bearings for less than the price of a new bearing set from Yamaha, so if worst comes to fun I'll end up cutting the bastard out.
I would first try using a pneumatic drill before cutting out the swingarm. I know we used to use them to remove truck wheels from semi trailers and I don't think any swingarm nut in the world would be stuck harder than some of those are. Any local tire fitter should have one.
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Old 02-10-2013, 05:40 PM   #33054
KansasBob
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Location: Topeka
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Only $15 at Harborfreight! Pneumatic Hammer.



http://www.harborfreight.com/catalog...t?q=air+hammer

I used one just the other day to drive the swing arm bolt out of a 35 year old Bultaco that had been out in the weather. I used heat from a propane torch too. Once I got it to budge I started working it back and forth.
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Old 02-10-2013, 05:43 PM   #33055
TwilightZone
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Location: Behind the Redwood Curtain
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>"They are. All 70mm "

Hmmm... I'll need to go out and take a look at mine.
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Old 02-10-2013, 05:51 PM   #33056
ba_
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Location: Westchester County, New York
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Quote:
Originally Posted by TwilightZone View Post
>"They are. All 70mm "

Hmmm... I'll need to go out and take a look at mine.
That would be awesome, thanks
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Old 02-10-2013, 08:12 PM   #33057
Outwardbound
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Joined: Jan 2005
Location: Strongsville, OH
Oddometer: 696
90/10 tires

Today I broke down and bought a new wheelset to mount street tires on the WRR.. I'm not interested in changing the brake caliper mounts as in the "X" front wheel conversion. Way too much work. So.....I simply bought another set of R wheels and I'll spoon a set of street rubber on them to de-complicate the swap procedures.

Can anyone recommend a set of tires (21 in front)that are mostly street oriented? I had a set of Kenda 761's on my previous KLR, but they were low quality, not all that sticky, and the front cupped badly. I firmly believe there are better tires out there. Anyone cross this bridge before?

Thanx!
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Old 02-10-2013, 08:18 PM   #33058
amtz.zero
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Joined: Mar 2011
Location: Moreno Valley, CA
Oddometer: 72
Quote:
Originally Posted by skierd View Post
A new piston, ring set, wrist pin and circlips, base gasket, head gasket, valve cover gasket, and new bolts for the head and cam cover ran about $160. Best price I've seen on the Athena is $750. Even if I end up needing a new cylinder (crossing my fingers that I won't) its another $350 or so for the factory piece. More than likely I'd try to return or resell the piston set and send my cylinder to Thumper Racing, and send them the head too to clean it up as well.

I ordered:
New piston, rings, gaskets, pin, clips, and bolts, plus a timing chain just in case (it was only $18)
New clutch and throttle cables
New thermostat (motor's coming apart, why not)
New factory tool kit (I love the crappy little thing, it actually works well trailside in my experience with a few small supplements)
A couple drain plugs and gaskets
A couple oil filters
R kickstand and spring for the eventual set of dirt wheels
Oil seal and o-ring for front sprocket (pretty sure mine's leaking)
some misc blind (GYTR timing plug covers and 1-1/8" handlebar mounts)
and a whole host of misc bolts and hardware that I know are either corroded, somewhat rounded, or been used a lot and should be replaced.


But first I have to get the $(&#ing swingarm off. Here's a hint kids... TAKE THE DAMN SWINGARM OFF AT LEAST EVERY 6 MONTHS! I let mine ride for close to a year and a half, and its frozen solid. I fortunately found a used swingarm on ebay complete with a new pivot bolt and bearings for less than the price of a new bearing set from Yamaha, so if worst comes to fun I'll end up cutting the bastard out.

That sucks! Does that mean that MY motor should only last around 43,000 miles as well?
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Old 02-10-2013, 09:08 PM   #33059
Llamaha
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Originally Posted by amtz.zero View Post
That sucks! Does that mean that MY motor should only last around 43,000 miles as well?
Entirely depends on a) luck, b) how you ride c) conditions you ride in and d) how well you keep your motorcycle serviced.
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Old 02-11-2013, 02:50 AM   #33060
bryantjt
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I ran Cheng Shin Barracudas on my KLX250 for close to a year and loved them on the street.








And they came in 21/18 sizes that fit perfectly.
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