Go Back   ADVrider > Bikes > Thumpers
User Name
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Thread Tools Search this Thread Display Modes
Old 11-09-2014, 07:43 PM   #1
monkeyodeath OP
Joined: Apr 2014
Oddometer: 3
'94 KLR...658 or 685?

My '94 has turned into a mobile fumigator and it's time to get a new piston.

I'm definitely doing an Eagle Mike overbore kit, but I'm wondering if I should either:

a. Get the 658 kit and bore my existing cylinder, or
b. Get a core cylinder from a later bike and bore it for the 685 kit.

Is the 685 kit improvement worth the > $100 I'll need to spend on a core cylinder? Or should I just use what I got?
monkeyodeath is offline   Reply With Quote
Old 11-10-2014, 02:43 AM   #2
Bell driver
Gnarly Adventurer
Bell driver's Avatar
Joined: Apr 2010
Location: Germany, Nordish By Nature.
Oddometer: 306
1985 Honda XLV750R
1989 KLR650A
2007 XR650L
2008 KLR650E
Bell driver is offline   Reply With Quote
Old 11-10-2014, 03:10 AM   #3
Beastly Adventurer
Joined: Oct 2004
Location: Anchorage, formerly Spenard (hub of the universe)
Oddometer: 5,475
685 it, do some head work (at least clean it up). airbox, carb, & exhaust mods make it better for not much money if you haven't done it already. change out the spring loaded balancer weights.... do the doo if you haven't yet. I'm sayin do that while you're in there. then save up money for the suspension
Beezer is offline   Reply With Quote
Old 11-10-2014, 04:28 AM   #4
Forever N00b
Joined: Dec 2005
Location: Maine
Oddometer: 2,545
It's hard to separate opinion from measured results when talking about the root cause of oil consumption. There were enough people who believed that the thin stock cylinder liner is part of the problem that I decided that putting in a thicker liner would be part of my solution.

I cannot tell you that I had to go to the larger piston and thicker sleeve, but I can tell you that it worked 100%. And I like the power.

If I had another KLR that needed the same treatment, I'd swap cylinders with EM.
Motorcycles are magical.

Grinnin is offline   Reply With Quote
Old 11-10-2014, 06:18 AM   #5
Gnarly Adventurer
Joined: Dec 2005
Location: St. Louis, MO
Oddometer: 125
658 or 685

Lot's of positive comments by reputable forum guys regarding the 658. The 658 will solve your oil consumption problem. If your budget is not an issue and you want a little additional power, then get the 685.
mikehailwood is offline   Reply With Quote
Old 11-10-2014, 06:29 AM   #6
Beastly Adventurer
VACommuter's Avatar
Joined: Jul 2009
Location: Northern Virginia
Oddometer: 1,609
I've got three KLRs. 2 have the 685 and 1 has the 719. If you are going to go big, might as well go as big as you can. Pleased with all three bike's performance but I've never been good at seat of the pants comparisons. I didn't notice any huge changes. I hear the updated 685 kit has a newer lighter piston that really reduces vibration. Supposedly very smooth. The guy who did my 719 just did a new 685 kit for someone else and he was amazed at how smooth the engine was on that 685.

I don't win shit.
2000 BMW K1200LT w/Sidecar "Bavarian Princess"
2002 KLR 685 w/ Enduro Sidecar "Dirt Nasty"
2003 KLR 685 "Street Ugly"
2007 KLR 719 "Muscles from Brussels"
VACommuter is offline   Reply With Quote
Old 11-10-2014, 07:17 AM   #7
Semi-reformed Tsotsi
Joined: Nov 2007
Location: South Texas
Oddometer: 1,675
50,000 miles on a 685 and still going smooth and strong. Need I say anymore?
Tsotsie is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Times are GMT -7.   It's 03:03 PM.

Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014