My Ongoing Project - Page 3 - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #21 of 61 Old 09-18-2019, 06:25 PM
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Quote:
Originally Posted by Tom Schmitz View Post
You need to have an adapter that goes from 14mm down to 12mm. Here is one: https://www.amazon.com/Lisle-20540-1...76027741&psc=1

Horrid Fright doesn't seem to carry them and they don't seem to have the $10 compression test kits that had a full set of adapters in it anymore, either.

Might be you could get one at NAPA or AutoZone.
Or . . . FLAG DOWN the next Snap-On truck you see!

P.S. Bring money!



--------------------------------------

Agree with post above; doubt low compression surfaces as the root/primary cause of the problem; thoroughly cleaning and adjusting the carburetor (q.v., "Carb Overhaul" post on this forum) and checking/adjusting valve clearance might be easier and less cumbersome than a compression check; may solve the problem.

“You better put down that gun. You got two ways to go, put it down or use it. Even if you tie me, you’re gonna be dead.” "John Russell" (Paul Newman), Hombre
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post #22 of 61 Old 09-18-2019, 07:10 PM
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Snap-On? In the Willamette Valley? Only passing through on I-5 at about 75mph. ;^)

I stayed in a lovely B&B, CH Bailey House; it was out east of Roseburg. Great country but most everything that has spark plugs is green and yeller and runs like a deer.
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“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte


Sting like a butterfly.

Last edited by Tom Schmitz; 09-18-2019 at 07:20 PM. Reason: Nope, it wasn't Brooks.
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post #23 of 61 Old 09-19-2019, 07:22 AM
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Snap-On? In the Willamette Valley? Only passing through on I-5 at about 75mph. ;^)
All right, all right!

Try Tractor Supply Company, then!


“You better put down that gun. You got two ways to go, put it down or use it. Even if you tie me, you’re gonna be dead.” "John Russell" (Paul Newman), Hombre
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post #24 of 61 Old 09-19-2019, 04:33 PM Thread Starter
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We're not as backwards as all that. I know what a Snap-On truck is. I think I even saw one once, somewhere.

Man, the valve clearance check was a little more involved than I thought it was going to be. Getting the valve cover out of there was like some kind of Chinese puzzle. I got my camshafts out! I hope I can get it all together.

So...The Left Exhaust was 0.15 mm (0.006")
Right Exhaust 0.15 mm (0.006")
Left Intake 0.05 mm (0.002")
Right Intake 0.06 mm (0.0025")

Both exhausts were right on the tight edge of being in spec and both intakes were too tight.

I wanted to shoot for the loose end of the specs for both, but the guy at the motorcycle shop convinced me to shoot for the middle of the upper and lower limits. Shims ain't cheap for a KLR, by the way.

The guy said the valves could contribute to my starting problems but he leaned towards it being a carburetor issue also. Tomorrow I'll pull the carb off and check for mud chiggers in the jets.
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post #25 of 61 Old 09-19-2019, 05:01 PM
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The guy said the valves could contribute to my starting problems but he leaned towards it being a carburetor issue also. Tomorrow I'll pull the carb off and check for mud chiggers in the jets.
Please, oh PLEASE, Skook: Take a look at this:

https://www.klrforum.com/how-tos-tec...-overhaul.html

On re-assembly, make sure the needle jet (or, "collar," or whatever one might call the part) is installed properly. And the slide spring holder. And, be sure the diaphragm is properly sound, seated, and sealed. You've verified fuel flow from the petcock, right?

Good luck!

“You better put down that gun. You got two ways to go, put it down or use it. Even if you tie me, you’re gonna be dead.” "John Russell" (Paul Newman), Hombre
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post #26 of 61 Old 09-19-2019, 06:16 PM
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I do not mess with metric measurements for valve tappets. As I've never found a feeler set marked in .025mm (.001inch) increments.

I always hope to achieve at least a loose ,006 or .007 inch on the Intakes. But preferably a Snug .008 inches, but never a loose .008" on intakes.

Also at least a loose .008 or .009 inch on Exhausts. But preferably a Snug .010 inches, but never a loose .010" on exhausts.

I write my existing clearances as such to help guide shim choice.
Could be <.006" / or could be .006" / or could be >.006" on either of your exhaust valves.

On a <.006 one should be able to use 2 sizes thinner and achieve either <.010" or a perfect snug .010".
Remember we are working with a lot stiffer springs than ignition breaker points.

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post #27 of 61 Old 09-19-2019, 06:52 PM
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Quote:
Originally Posted by pdwestman View Post
...I've never found a feeler set marked in .025mm (.001inch) increments...
This might be as close as you can get.



I added a .23 to my set just to sorta round it out. Your way is still better and easier. We Merkuns are going onto the metric system inch by inch...

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“She went out slowly. The way she did it hadn’t been learned at business college.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte


Sting like a butterfly.
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post #28 of 61 Old 09-19-2019, 07:20 PM
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Too Coarse to be of much use. IMO.

It's just so simple to remember that shims are only available in .002 inch increments. And if an exhaust valve is measuring at >.008 or <.009 that is a good as it can get!
As close to maximum as possible without going over spec.

pdwestman
Modify at "YOUR OWN RISK"!

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post #29 of 61 Old 09-19-2019, 08:17 PM
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It's .002, .004, .005, .006, .007, .008, .010, .012. (I added the .009 to mine)

Tom [email protected]

“She went out slowly. The way she did it hadn’t been learned at business college.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte


Sting like a butterfly.

Last edited by Tom Schmitz; 09-19-2019 at 08:28 PM. Reason: I swear, I can't type for beans today
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post #30 of 61 Old 09-19-2019, 08:27 PM
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I do not mess with metric measurements for valve tappets.
After all, the METRIC SYSTEM is merely a COMMUNIST PLOT!!!!!!!!!!


“You better put down that gun. You got two ways to go, put it down or use it. Even if you tie me, you’re gonna be dead.” "John Russell" (Paul Newman), Hombre
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