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#718071 - 12/07/17 7:54 pm A10 caqm timming spec's  
Joined: Mar 2002
Posts: 13
flattop Offline
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flattop  Offline
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Joined: Mar 2002
Posts: 13
Hi All
I have unfortunately miss timed my camshafts. The dot s and lines do not seem to fall in place where it will start and run.
Beings I did this twenty years back , I've bought it back from my brother in law.
Time to get back at it.
I need a specification or procedure for resetting them.
Of course he fiddled with the mag , I think i can retime that .
thanks Tony

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#718126 - 12/08/17 2:29 pm Re: A10 caqm timming spec's [Re: flattop]  
Joined: Feb 2010
Posts: 366
Red Lapierre Online content
BritBike Forum member
Red Lapierre  Online Content
BritBike Forum member

Joined: Feb 2010
Posts: 366
Upstate NY
Flattop
PM me or post an e-mail I will send you a copy of the instructions from BSA manual.
Red


57 A10 GF
61 A7
61 A10 GF
63 A10 SR
76 CB 125 Honda
76 FLH
2012 FLHTP
#718288 - 12/10/17 4:22 am Re: A10 caqm timming spec's [Re: Red Lapierre]  
Joined: Mar 2002
Posts: 13
flattop Offline
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flattop  Offline
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Joined: Mar 2002
Posts: 13
Thanks Red
pm sent

#718323 - 12/10/17 1:47 pm Re: A10 caqm timming spec's [Re: flattop]  
Joined: Feb 2010
Posts: 366
Red Lapierre Online content
BritBike Forum member
Red Lapierre  Online Content
BritBike Forum member

Joined: Feb 2010
Posts: 366
Upstate NY
e-mail sent.


57 A10 GF
61 A7
61 A10 GF
63 A10 SR
76 CB 125 Honda
76 FLH
2012 FLHTP
#718441 - 12/11/17 7:41 pm Re: A10 caqm timming spec's [Re: flattop]  
Joined: Feb 2010
Posts: 366
Red Lapierre Online content
BritBike Forum member
Red Lapierre  Online Content
BritBike Forum member

Joined: Feb 2010
Posts: 366
Upstate NY
Sent more pics and instruction.


57 A10 GF
61 A7
61 A10 GF
63 A10 SR
76 CB 125 Honda
76 FLH
2012 FLHTP
#718492 - 12/12/17 4:04 am Re: A10 caqm timming spec's [Re: flattop]  
Joined: Mar 2002
Posts: 13
flattop Offline
BritBike Forum member
flattop  Offline
BritBike Forum member

Joined: Mar 2002
Posts: 13
Thanks to Red I just realized I been thinking Triumph twin cam.
So only one cam to time in.
I do not think it has stock cam and the fellow who built it up originally has passed.
Would there be a intake opening or center line number to hit.
Such as 18* before tdc @ .050.
I need to recheck it all , surley must be off a tooth.....or more possibly the key .
Thanks again

#718746 - 2 hours ago Re: A10 caqm timming spec's [Re: flattop]  
Joined: Feb 2010
Posts: 366
Red Lapierre Online content
BritBike Forum member
Red Lapierre  Online Content
BritBike Forum member

Joined: Feb 2010
Posts: 366
Upstate NY
BSA service sheet #216 A group (swinging arm frame)

Valve Timing-inlet (deg) A10
opens before TDC 30 deg
Closes after BDC 70 deg

A10 RR or SR
opens before TDC 42 deg
Closes after BDC 62 deg



Valve Timing-exhaust (deg) A10
opens before BDC 65 deg
Closes after TDC 25 deg


A10 RR or SR
opens before BDC 67 deg
Closes after TDC 37 deg





Note: after engine numbers CA7_5232 and DA10_1647 the valve timing for A7 and A10 is the same as the SS and Rocket machines. Tappet clearances for quiet running should be .008 in. inlet .010 in. exhaust, but for maximum power .010 in. inlet and .016 in. exhaust

Hope this helps
Red


Last edited by Red Lapierre; 2 hours ago.

57 A10 GF
61 A7
61 A10 GF
63 A10 SR
76 CB 125 Honda
76 FLH
2012 FLHTP

Moderated by  Allan Gill, Jon W. Whitley 


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