moab nklr

[klrcanuck]

Hello, my 86 KLR600 is running great, starts and idles great, good power and no engine noises so far. Trouble is, it's started putting out oil smoke on full throttle blasts. Nothing when idleing or cruising, just when cracked open from cruise speed. With the decompressor built in, I get 105lbs of compression as the book says and the bike only has 9000 kms on the odometer. I may have bad valve guides? Between the age and low milage she has apparently been stored most of her life so maybe valve seals dried up and broke up with the new use? If there is any valve seals that is? I have ordered a new top end gasket kit and would like some advice or any suggestions you guy's can offer before I rip into her. Planning on a head shave to boost compression to 10-10.5:1 and cam redialing. I have done the Supertrapp, carb kit and airbox open up already. Rob

[Devon Jarvis]

It sounds like you are quite comfortable with engine work. Please post your results with the higher compression, and the cam timing. I thought (and remember this is "some guy on the internet" giving you advice) that smoking under load was rings, and smoking on the overrun is valve guides. If the bike was stored for a long time, you may have some rust pitting and scoring on the cylinder wall. A proper leakdown test will tell you exactly where the motor is leaking. Also, try doing your same compression test again but dump a tablespoon of oil into the spark plug hole. If the compression comes up then it's the rings. I have SR500s, one with a 9:1 piston and one with a 10:1, and I have to say the difference is impressive. Higher compression is the closest thing to "free" horsepower (no additional fuel consumption or noise) that you're going to get, assuming you have a reliable fuel supply. Devon A15 klrcanuck wrote:

> > Hello, my 86 KLR600 is running great, starts and idles great, good > power and no engine noises so far. Trouble is, it's started putting > out oil smoke on full throttle blasts. Nothing when idleing or > cruising, just when cracked open from cruise speed. With the > decompressor built in, I get 105lbs of compression as the book says > and the bike only has 9000 kms on the odometer. I may have bad valve > guides? Between the age and low milage she has apparently been > stored > most of her life so maybe valve seals dried up and broke up with the > new use? If there is any valve seals that is? I have ordered a new > top end gasket kit and would like some advice or any suggestions you > guy's can offer before I rip into her. Planning on a head shave to > boost compression to 10-10.5:1 and cam redialing. I have done the > Supertrapp, carb kit and airbox open up already. Rob >

[judjonzz]

--- In DSN_klr650@y..., Devon Jarvis wrote:

> I thought (and remember this is "some guy on the internet" giving

you

> advice) that smoking under load was rings, and smoking on the

overrun is

> valve guides. >

The other way around. On the overrun,combustion chamber vacuum draws oil up past the rings.

[John Lyon]

Check out the today s USA Today page 17A - 18A John --- klrz4ever wrote:

> Just heard that Moab is in the news. Looks like that > at some > unspecified time in the future, the Colorado River > will be flowing > through a huge radioactive slag heap somewhere near > Moab and > contaminate the water supply for 25 million people > downstream. On the > bright side, you'll be able to run Cataract Canyon > at night by the > glow of the river, and there may be some new species > of fish cropping > up in Lake Powell :O > > __Arden Kysely

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