cleaning chain, lube

[spike55_bmw]

What does your rear fender look like? Do you see smoke? Don R100, A6F

--- In DSN_KLR650@yahoogroups.com, "suzzy2670" wrote: > > my Klr started burning oil almost over nite,? its got 44000km or 30000mi. I did turn the air screw in and it was a little lean for a couple rides, can this do it? >

[transalp 1]

Lean can mean more heat. Heat can vaporize oil. Me? I'd richen things back up, change the oil and see what happens. At the risk of strating another (!) oil debate, may I ask which oil you are using? eddie

> [Original Message] > From: suzzy2670 > To: DSN_KLR650@yahoogroups.com> > Date: 6/29/2010 11:03:57 AM > Subject: [DSN_KLR650] burning oil > > my Klr started burning oil almost over nite,? its got 44000km or

30000mi. I did turn the air screw in and it was a little lean for a couple rides, can this do it?

> > >

[John Biccum]

Attachments : My KLR’s oil consumption jumped suddenly from 1-2 ounces per thousand miles to one quart per hundred miles.  This change happened suddenly at about 32K miles when crossing a high mountain pass in Montana at (Montana!) highway speeds.

 

This was the reason:  http://johnbiccum.smugmug.com/Motorcycles/KLR-Engine/1030345_WH34k#47781832_osUDG

 

Lean running would contribute to detonation; detonation could crack a piston.

 

[b]From:[/b] DSN_KLR650@yahoogroups.com [mailto:DSN_KLR650@yahoogroups.com] [b]On Behalf Of [/b]suzzy2670 [b]Sent:[/b] Tuesday, June 29, 2010 09:02 [b]To:[/b] DSN_KLR650@yahoogroups.com [b]Subject:[/b] [DSN_KLR650] burning oil

 

 

my Klr started burning oil almost over nite,? its got 44000km or 30000mi. I did turn the air screw in and it was a little lean for a couple rides, can this do it?

[Charlie Y]

#ygrps-yiv-392522072 .ygrps-yiv-392522072ygrp-photo-title { TEXT-ALIGN:center;WIDTH:75px;HEIGHT:15px;CLEAR:both;FONT-SIZE:smaller;OVERFLOW:hidden;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072ygrp-photo { BORDER-BOTTOM:black 1px solid;BORDER-LEFT:black 1px solid;BACKGROUND-COLOR:white;WIDTH:62px;BACKGROUND-REPEAT:no-repeat;BACKGROUND-POSITION:center 50%;HEIGHT:62px;BORDER-TOP:black 1px solid;BORDER-RIGHT:black 1px solid;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072photo-title A { TEXT-DECORATION:none;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072photo-title A:active { TEXT-DECORATION:none;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072photo-title A:hover { TEXT-DECORATION:none;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072photo-title A:visited { TEXT-DECORATION:none;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072attach-table DIV.ygrps-yiv-392522072attach-row { CLEAR:both;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072attach-table DIV.ygrps-yiv-392522072attach-row DIV { FLOAT:left;} #ygrps-yiv-392522072 P { PADDING-BOTTOM:3px;PADDING-LEFT:0px;PADDING-RIGHT:0px;CLEAR:both;OVERFLOW:hidden;PADDING-TOP:15px;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072ygrp-file { WIDTH:30px;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072attach-table DIV.ygrps-yiv-392522072attach-row DIV DIV A { TEXT-DECORATION:none;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072attach-table DIV.ygrps-yiv-392522072attach-row DIV DIV SPAN { FONT-WEIGHT:normal;} #ygrps-yiv-392522072 DIV.ygrps-yiv-392522072ygrp-file-title { FONT-WEIGHT:bold;} John ! Doesn't the lighter piston cause the stock balancer to over-compensate or is a different balancer part of the upgrade?   -- charlie

 crack a piston.  

[John Biccum]

Theoretically the balancer exactly matches the reciprocating mass of the piston.  But this is a KLR not a finely tuned racing machine!  The stock balancer was not drilled during engine assembly to match the exact weight of the stock piston.  Rather the factory just considered it  “close enough”.  Likewise I saw no reason to drill the balancer to remove 50 grams of weight to match the lighter weight of the new piston. I too deemed it “close enough”. 

 

After the piston swap I noticed less vibration not more, faster spin up to a given RPM and less engine braking effect.  That last observation surprised me.  I had thought that engine braking was a function of displacement not reciprocating mass.  But I have been wrong before...

 

[b]From:[/b] DSN_KLR650@yahoogroups.com [mailto:DSN_KLR650@yahoogroups.com] [b]On Behalf Of [/b]Charlie Y [b]Sent:[/b] Tuesday, June 29, 2010 17:06 [b]To:[/b] DSN_KLR650@yahoogroups.com [b]Subject:[/b] Re: [DSN_KLR650] burning oil

 

 

John !

Doesn't the lighter piston cause the stock balancer

to over-compensate or is a different balancer part of the upgrade?

 

-- charlie

 crack a piston.

 

[Jeff Saline]

On Tue, 29 Jun 2010 15:01:36 -0000 "suzzy2670" writes:

> my Klr started burning oil almost over nite,? its got 44000km or > 30000mi. I did turn the air screw in and it was a little lean for a > couple rides, can this do it?

<><><><><><><> <><><><><><><> suzzy2670, I don't think the air screw will make much difference. Actually it's a fuel screw for the idle mixture. My 2003 KLR started burning oil in 2006 after I returned from a Hole in the Wall trip in Wyoming. My KLR overheated near Douglas as I was traveling on a dirt road at 45 mph with about a 45 mph tail wind. I couldn't get any cooling through the radiator even using my fan override switch. The first time I stopped to allow the engine to cool it was about 245 degrees if I recall correctly. The second time I continued past that temp as an experiment to see if it would reach a stable temperature. I finally stopped at 275 degrees on the temp gauge. After that ride my KLR used a little oil but not a lot. I probably had to top off the oil 2 or 3 times between oil changes. It was maybe 1/2 quart or a tad more of oil in 1,750 smiles or so. I tried a few things to see if it would stop. I used Auto RX which was discussed here by Blake about 4 years ago. It didn't make a difference. I was thinking if I had cooked oil in the rings this treatment might clear and free the rings. I decided to replace the valve seals as guys that were following me usually told me they could smell oil from my bike usually upon closed throttle deceleration. Since I was going to go in and do the valves I decided I'd also do a 685 kit incase the bore or rings were damaged. I finally got around to installing the 685 kit a few months ago. The engine had about 29,400 or so smiles on it. When I pulled the cylinder I found the compression ring gaps were lined up above each other. About 180 degrees out from those gaps I found all three oil ring gaps lined up. For those not familiar with the ring set up... there are three rings. Two are compression rings at the top of the piston. Below them is the oil ring which is actually three rings in one groove. There is a scraper ring on the top and another one on the bottom. In the middle is the expander ring which looks kind of like a corrugated thin metal ring. I think I know where the oil use issue was taking place. : ) Since I had four valve seals at $11 per seal and no other use for them I did replace them too. The old seals were still supple and it looked like they were working fine. For those wondering... the first thing I noticed when I rode the 685 was it's smoother than the stock 650. I'd been hearing about the smoothness for a few years but it didn't register. The difference is between lawn mower engine smooth and sewing machine smooth. The added power is also slightly noticeable but the smoothness is what's really impressive. It also appears I'm back to not using oil which is one of the added benefits of the 685. Martin Earl was out last week for a day and took my bike out for a few miles to see what the 685 was all about. He's got family visiting but might comment about it from his perspective if he gets a chance. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT . ____________________________________________________________ LCD 42" TV for $26.42? Macbook Pro for $91.73? Are these prices real? You WON'T Believe What We Found! http://thirdpartyoffers.juno.com/TGL3141/4c2abbfd8e053b58am07vuc

[David Critchley]

If you don't explain the logic behind your conclusions, they are just bald statements, and the misconceptions just keep rolling. If you explain them, the "instant result crowd" haven't got the patience to read on for two minutes, and you are wasting their precious time. One of the facts of our modern existence, similar to the people with aluminium sprockets for the weight saving, and bars full of lead shot to look after the vibration. D Critchley

I do have a tendency to be wordy, huh? Maybe I should work on that.  For some reason I feel I must explain the reasoning behind my opinion lest it be disregarded as unfounded.  Maybe it's because I read so many scientific papers where you must show your work to support your conclusions. Good to know at least someone reads them, though.  -Jeff Khoury

[img]https://ec.yimg.com/ec?url=http%3A%2F%2Fl.yimg.com%2Fa%2Fi%2Fus%2Fyg%2Flogo%2Fus.gif&t=1571805338&sig=C9F2AGgvqnYKNaGwKTM2Qw--~E[/img] Switch to: DSN_KLR650-traditional@yahoogroups.com?subject=Change%20Delivery%20Format:%20Traditional, DSN_KLR650-digest@yahoogroups.com?subject=Email%20Delivery:%20Digest • DSN_KLR650-unsubscribe@yahoogroups.com?subject=Unsubscribe • Terms of Use . [img]http://geo.yahoo.com/serv?s=97359714/gr ... c3=5733767[/img]