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TOPIC: Ek Het Groot K@k

Ek Het Groot K@k 4 years 6 months ago #88669

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You mean that spring device on the exhaust cam? If so mine does not have them fitted.
KLX 250, CRF230F, F800GS, 2008 KLR650
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Ek Het Groot K@k 4 years 6 months ago #88670

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Ok,it could be BAD NEWS then???
Exhaust Cam journals could be damaged?
You need to strip and see?

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Ek Het Groot K@k 4 years 6 months ago #88671

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I will check it out and post the findings.
KLX 250, CRF230F, F800GS, 2008 KLR650
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Ek Het Groot K@k 4 years 6 months ago #88678

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took off the top cover and measured the valve clearances.
Inlet Exh
.35 >.5 or 0 (mm)
.30 .25 (mm)

I guess that means 3 are bent?

I removed the cams and looked around the top can not see any visible damage.
KLX 250, CRF230F, F800GS, 2008 KLR650
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Ek Het Groot K@k 4 years 6 months ago #88679

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Was the engine still running?
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Ek Het Groot K@k 4 years 6 months ago #88680

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I have not started it again since I heard the noise, I assume it will not start again
KLX 250, CRF230F, F800GS, 2008 KLR650
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Ek Het Groot K@k 4 years 6 months ago #88684

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KarlSouth wrote:
took off the top cover and measured the valve clearances.
Inlet Exh
.35 >.5 or 0 (mm)
.30 .25 (mm)

I guess that means 3 are bent?

I removed the cams and looked around the top can not see any visible damage.

I'm not an expert, but I don't think you can deduce from those clearances whether a valve is bent.

Perhaps the previous mechanic just set the clearances too big? Clearances like those will definitely be noisier than normal, but it shouldn't cause a loud clunk noise - only an extra whirr while the engine is running.
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Ek Het Groot K@k 4 years 6 months ago #88686

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KarlSouth wrote:
I have not started it again since I heard the noise, I assume it will not start again

So the engine was running until you heard the noise. I don't think that bent valves are your problem.
Yes the clearance are out, but not to much.
How was the valve timing?
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Ek Het Groot K@k 4 years 6 months ago #88687

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The valves where set correctly back in 2013 when I had the motor rebuilt. Since then I have done 15000km. The valve timing was slighty out meaning that I have to turn the crank approx 1 cm to get the "t" to align with the notch with the cam arrows level with the head surfaces. i have corrected this alingment since but the noise is still there.

What concerns me is that the left exh measures no clearance. Is there another way that i can make sure the valves are bent or not? I really do not want to take the head off unless its totally necassary.
KLX 250, CRF230F, F800GS, 2008 KLR650
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Ek Het Groot K@k 4 years 6 months ago #88688

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If the left exhaust has no clearance then you must fit a thinner shim to get clearance again.
I very much doubt that your valves are bent.
I would drain the oil and pull off the left side engine covers and flywheel.
Drain the oil into a clean container and look for any metal bits.
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