Author Topic: Adjusting cam chain tension  (Read 438 times)

Offline DomP

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Adjusting cam chain tension
« on: August 22, 2023, 05:56:33 PM »
I've hacmd a search to try and save you all having to repeat yourselves but I can't find the answer to how I set 15° after tdc.
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline McCabe-Thiele (Ted)

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Re: Adjusting cam chain tension
« Reply #1 on: August 22, 2023, 06:16:03 PM »
I am confused by your question as it's headed cam chain tension - do you mean checking the valve timing?
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Offline Trigger

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Re: Adjusting cam chain tension
« Reply #2 on: August 22, 2023, 06:19:17 PM »
I've hacmd a search to try and save you all having to repeat yourselves but I can't find the answer to how I set 15° after tdc.

If you turn just past TDC and turn until you line up the little pillar that the spring hooks over  ;)

Offline DomP

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Re: Adjusting cam chain tension
« Reply #3 on: August 22, 2023, 06:49:53 PM »
Thanks Trigger, that was what I'd seen on an American YouTube video but wasn't sure to trust it
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline DomP

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Re: Adjusting cam chain tension
« Reply #4 on: August 22, 2023, 06:51:31 PM »
I am confused by your question as it's headed cam chain tension - do you mean checking the valve timing?

No tha chain, doesn't it need to be adjusted when at 15° past tdc
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline Trigger

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Re: Adjusting cam chain tension
« Reply #5 on: August 22, 2023, 06:54:37 PM »
As in the picture. The red straw is representing the TDC mark .




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Offline McCabe-Thiele (Ted)

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Re: Adjusting cam chain tension
« Reply #6 on: August 22, 2023, 07:15:38 PM »
I am confused by your question as it's headed cam chain tension - do you mean checking the valve timing?

No tha chain, doesn't it need to be adjusted when at 15° past tdc

I learn something new most days - if I understand the reply you adjust the cam chain statically in one particular position 15 deg past TDC.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Bryanj

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Re: Adjusting cam chain tension
« Reply #7 on: August 22, 2023, 07:22:14 PM »
Thats the later Honda way which sometimes works, i still use the tension on kickstart way

Offline Trigger

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Re: Adjusting cam chain tension
« Reply #8 on: August 22, 2023, 07:27:46 PM »
Could never do it with the kick start when i was building shed loads of engines as, they arrived with out a kick start. I would always line it up  ;)

Offline DomP

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Re: Adjusting cam chain tension
« Reply #9 on: August 22, 2023, 07:45:48 PM »
Oh so what is the kick-start method then?
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline McCabe-Thiele (Ted)

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Re: Adjusting cam chain tension
« Reply #10 on: August 22, 2023, 08:02:17 PM »
I believe you put hand pressure on the kickstart then release the adjuster then tighten it up whilst holding the tension on the chain via the kickstart that takes up the slack on the drive side of the chain.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline DomP

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Re: Adjusting cam chain tension
« Reply #11 on: August 22, 2023, 08:14:28 PM »
If it works it sounds a little easier
1975 XS650B
1976 CB550F1 current project
2012 Triumph Daytona 675

Offline McCabe-Thiele (Ted)

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Re: Adjusting cam chain tension
« Reply #12 on: August 22, 2023, 08:17:56 PM »
It worked well on my 400.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline deltarider

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Re: Adjusting cam chain tension
« Reply #13 on: August 22, 2023, 09:18:17 PM »
Best done with a helper.

 

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