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What options for identifying a loud tic in left cylinder

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schrader7032
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Re: What options for identifying a loud tic in left cylinder

Post by schrader7032 »

I'm not sure the distance matters much. They should be parallel with lets them move with little drag. And the blocks do need to be squeezed together enough to only see the oil film move a bit when you grab the rocker arm and move up and down. You could go so far as to increase the valve clearance enough to be able to pull the pushrods out. Then move the rocker arms full through their range and feel how they move...there should be no tight spots...they need to move with little drag.
Kurt in S.A.
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malmac
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Re: What options for identifying a loud tic in left cylinder

Post by malmac »

Hi Kurt

AS you are aware I am chasing down a electrical problem at present which has prevented me from further investigation of the TIC. As soon as I sort out the electrical problem I will get back to this problem.
I have done the end float you mention, which may have played a major part. Still to check the needle rollers. I am certainly getting oil flow based on the oil in the rocker covers each time I take them off.

Now where is the that multimeter.........

Back to the workshop.


Thanks.
mal - R69s
Toowoomba- Australia

Carott
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Re: What options for identifying a loud tic in left cylinder

Post by Carott »

Mal,

While oil in the rocker covers is a good indication of flow, I have been caught out on one bike.

Lots of oil in the cover but running the engine with the cover off showed me that only the intake rocker was getting oil. The exhaust rocker was dry.

Previous owners disease found this plug of silicone blocking the oil gallery.
20210618_174414 (1).jpg
I was fortunate to find it before riding very far.

Brett

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malmac
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Re: What options for identifying a loud tic in left cylinder

Post by malmac »

Hi Brett

You are right to identify my faulty logic.

I will run the engine with the rocker cover off and just check oil flow.
Also it might make the source of noise more apparent.


Thank You.


Mal
mal - R69s
Toowoomba- Australia

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cbclemmens
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Re: What options for identifying a loud tic in left cylinder

Post by cbclemmens »

Mel:
If you put a metal rod inside a small funnel and tape it to the funnel tip it can help you track your tick. Listen at the funnel mouth and touch the tip to the engine at various spots where you think the ticking may be coming from. Or you could go buy a stethoscope.

Craig

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srankin
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Re: What options for identifying a loud tic in left cylinder

Post by srankin »

a big long screwdriver works as well, LOL, St.
Owner of a 84, R80RT and 78, R100RS

Parked 2Long
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Re: What options for identifying a loud tic in left cylinder

Post by Parked 2Long »

srankin wrote:
Wed Aug 02, 2023 10:53 am
a big long screwdriver works as well, LOL, St.
A piece of 2' garden hose works good too.
ear on one end, search for noise with the other end.
In the school of life, first comes the test, then comes the lesson.

Parked 2Long
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Re: What options for identifying a loud tic in left cylinder

Post by Parked 2Long »

a 2' piece of garden hose
In the school of life, first comes the test, then comes the lesson.

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Re: What options for identifying a loud tic in left cylinder

Post by cwf »

It's a good way of giving yourself nightmares. Maybe after many years of different bikes, one learns the different sounds but, to begin with it's like a bump in the night - what's that!! :shock:
75/7+ offroad sidecar; 50/2; R 35; XR125V; XR200A; Solex; 1939 Hillman Minx DHC.

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malmac
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Re: What options for identifying a loud tic in left cylinder

Post by malmac »

Thank you all for your ideas about how to locate the "TIC".

I have made this listening device.
2L2A9383.jpg
Allows me to make a digital recording, using my phone.
Helps with documentation, but doesn't suggest the possible causes. I guess I need a smarter phone.

Thanks again for your help.


Mal
mal - R69s
Toowoomba- Australia

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