KLX250/351SF valve clearances

Thread Tools
 
Search this Thread
 
  #11  
Old 02-19-2018 | 05:10 PM
klx678's Avatar
Senior Member
Joined: Aug 2009
Posts: 4,562
From: Delaware, Ohio
1st Gear Member
Default

There is nothing wrong in that picture other than it is on TDC exhaust, turn the crank 360 degrees, the cams go 180 and in the right position for TDC compression.. But I kinda missed the part about it not running for more than a few minutes... I'd be hauling it back and asking about the valve clearance. Ask them to turn the engine to TDC and show you the valve clearance. That has to be the problem from what the OP says.. Fact is if I had work done and it wasn't running right I'd have it back at the shop the same day.
 
  #12  
Old 02-19-2018 | 08:17 PM
MaximusPrime's Avatar
Senior Member
Joined: Mar 2012
Posts: 1,264
From: WMNF, NH, USA
1st Gear Member
Default

I thought I had zero clearance once, turns out I was using inches numbers instead of millimeters on my feeler gauges.
0.017" is way bigger than 0.017mm, LOL
 
  #13  
Old 02-19-2018 | 08:54 PM
ranger01's Avatar
Thread Starter
|
Member
Joined: Mar 2012
Posts: 36
1st Gear Member
Default

I get the difference in the methods of measurement.

Yes, the valves sit in little seats.

I will roll the crank and remeasure just to make sure. None of the local auto stores carry metric feeler gauges, everything is SAE with the metric conversion on the gauge. I also went and got a digital micrometer, but it only goes to 0.01mm, cheap crap at the auto stores, I will probably just return it and buy a good one later.
 
  #14  
Old 02-20-2018 | 08:57 PM
klx678's Avatar
Senior Member
Joined: Aug 2009
Posts: 4,562
From: Delaware, Ohio
1st Gear Member
Default

.01mm = .0004" The average micrometer is only accurate to .001", a mic that measures in tenths (.0001) is only accurate to +/-.0001. That +/-.01mm is pretty darn good. Take that from someone who did calibration work and taught micrometer/caliper reading for a leading edge world class cutting tool company.

I would measure again with the right blades with the crank turned to the proper position first.
 
  #15  
Old 02-20-2018 | 10:23 PM
Brewster's Avatar
Senior Member
Joined: Feb 2009
Posts: 667
From: Hayward, CA
1st Gear Member
Default

Plus, the shim thickness's are in .05mm increments. Converting the metric to imperial and using your "inch" gauges will get the job done.

Ride on
Brewster
 
  #16  
Old 02-23-2018 | 01:52 PM
ranger01's Avatar
Thread Starter
|
Member
Joined: Mar 2012
Posts: 36
1st Gear Member
Default

I got a shim kit from a buddy who had exactly what I needed, an entire Hot Bodies kit. It took 3 tries to get the right measurements but it fired up last night and the rpms came up nicely. I only ran it for 10 seconds as it was in the back garage. The driveway was a skating rink so no test rides yet, maybe Sunday. If it runs good, it's going up for sale.

It's a great little bike but I can't ride it for more than 20 min, I walk a little bow legged until my *** loosens up. I sold my VFR and now have a S1000XR, I really don't need this bike now. My VFR had electrical issues, I burned up 3 stators in 5 years of owning it. Pretty sure I had a lemon, Honda wouldn't do anything about it, so bye bye. Love my XR, the power is rediculous and the comfort is so much better than the VFR plus all the factory farkles.

Thanks for the help. Watch for a for sale ad soon if anyone is interested in it, I'm in Wisconsin.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Klxrelic
KLX 250S
60
03-17-2022 02:57 PM
Arctra
KLX 250S
13
04-21-2012 03:43 AM
dan888
KLX 250S
17
05-20-2010 10:37 AM
Notstock
General Tech
100
06-23-2006 01:01 AM
Marty
KLX 250S
2
04-26-2006 06:05 AM



Quick Reply: KLX250/351SF valve clearances



All times are GMT. The time now is 03:30 PM.