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R51/3 - metallic ticks from one side of the motor
- Micha
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R51/3 - metallic ticks from one side of the motor
The motorcycle still starts first kick and behaves great.
In this Barrington Motor Works video, at about 02:50 - there's an explanation regarding ticking's:
https://www.youtube.com/watch?v=yCTpwScRE5w
I don't recall any free play there while I worked on that head, but will take my time and check it, to see if that is also my case.
What else can cause a noisy engine head?
The motor has new pushrods, guides, followers, valves and springs on both sides and while test running the bike in the neighborhood the engine was quiet.
R51/3 1952
Engine Nr. 529466
- schrader7032
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Re: R51/3 - metallic ticks from one side of the motor
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
- jwonder
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Re: R51/3 - metallic ticks from one side of the motor
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York
Re: R51/3 - metallic ticks from one side of the motor
Seattle
Re: R51/3 - metallic ticks from one side of the motor
But I would rather think of valve gaps.
Laurent.
- Micha
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Re: R51/3 - metallic ticks from one side of the motor
Valve clearance is ok and timing is via PowerDynamo.
Oil is Castrol 40 grade for vintage use.
It is not a rattling, it is more like tick tick tick.
I am now thinking a bit out-of-the-box in order to understand why it is happening (and why only on one side).
Could it be a bent push rod?
R51/3 1952
Engine Nr. 529466
- wa1nca
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Re: R51/3 - metallic ticks from one side of the motor
Should be almost zero
Put each valve in fully closed position and see if their is any up and down play
If so loosing the head bolts for that side and tap end blocks together but not to tight so the rocker arm still moves freely
May be easier to remove rocker arm and use a vise to narrow the end play
Once removed you can also check the push rods
Tommy
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA
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