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BooG
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R65 CPR
07/03/18 at 11:40:00
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Good afternoon.
I had some time off recently, so my attempts to revive the R65 have begun. There is a new dyna coil, rebuilt carbs, rebuilt bean can, new points n plugs and some fresh gas. The tank isn't on yet, but i filled the float bowels for turn over. New battery.
Turned over very eagerly...some chuffing and banging. It didn't actually run, but I think it will. Both header pipes were hot to touch, although the right seemed hotter than the left. I think I should set static timing...which leads me to....how do I do that then?
As far as I know so far...you get the S mark in the observation hole, but what else should I do at this stage before I turn over again?
Love working on the airhead again!!
  

BMW R65 1980.
Vespa Sprint Veloce 1971
BMW K75S 1987


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Barry
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Re: R65 CPR
Reply #1 - 07/03/18 at 16:18:46
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I disconnect the black wire at the bean can and use an ohm meter or for preference an electrical buzzer between the spade connection and earth (across the points).    Some people say they jog the engine around using the rear wheel but I haven't the fainest idea how it's possible to do that with any accuracy. I use an Allen key in the rotor bolt with the plugs out.  The points should open just as the S mark lines up with the notch in the window.  I then rotate one revolution to check the other lobe on the points cam.



  

Barry Cheshire, England 79 R45
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Mrclubike
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Re: R65 CPR
Reply #2 - 07/03/18 at 18:20:17
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I have drilled a hole in the front cover to access the bolt to turn the motor over
Very handy   also  when adjusting the valves
  

horns_40cr_001.jpg ( 105 KB | 2 Downloads )
horns_40cr_001.jpg

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
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wilcom
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Re: R65 CPR
Reply #3 - 07/03/18 at 21:42:40
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Mrclubike wrote on 07/03/18 at 18:20:17:
I have drilled a hole in the front cover 


Very clever Sir
  

Joe Wilkerson
Telephone man with a splash of Data
Menifee, CA

Present:
1984 BMW R65LS "Herr Head"
past:
1979  R65   
1980  R65          
1982 R80RT 
1974 R90/6     
1972  R75        
1964 R50
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BooG
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Re: R65 CPR
Reply #4 - 07/05/18 at 04:59:53
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Cough...splutter....ignition....pinking....cough...splutter.....there is life there......why won't she kick in...!! It wants to go...points set/both pipes are hot to touch, so there is ignition...but won't run to idle.
What else should I be doing?
  

BMW R65 1980.
Vespa Sprint Veloce 1971
BMW K75S 1987


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Mrclubike
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Re: R65 CPR
Reply #5 - 07/05/18 at 20:06:46
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Weak spark
  

Buzzing along on my tubeless 82 R65
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BooG
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Re: R65 CPR
Reply #6 - 07/06/18 at 06:11:04
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Possibly...so that's why I replaced the coils with the Dyna, new plugs went in and new points. I'll look again at the spark....big, fat and blue yeah? Shocked
  

BMW R65 1980.
Vespa Sprint Veloce 1971
BMW K75S 1987


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BooG
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Re: R65 CPR
Reply #7 - 07/06/18 at 06:19:06
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It certainly looks the part..nice and blue (viewed in the dark). There is a new condenser on the bean can; I say new, but that was 8 years ago. What would be the symptoms of a failing condenser?
  

BMW R65 1980.
Vespa Sprint Veloce 1971
BMW K75S 1987


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BooG
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Re: R65 CPR
Reply #8 - 07/06/18 at 06:58:26
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Could it be the "new Dyna coil" after all? It's the green one.
Spark looks good though.....head scratch.....
  

BMW R65 1980.
Vespa Sprint Veloce 1971
BMW K75S 1987


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BooG
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Re: R65 CPR
Reply #9 - 07/06/18 at 07:01:21
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PS: I would put a rubber in your hole to stop water/dust debris etc.....please don't take that the wrong way!
  

BMW R65 1980.
Vespa Sprint Veloce 1971
BMW K75S 1987


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tunnelrider
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Re: R65 CPR
Reply #10 - 07/06/18 at 16:18:08
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If you're observing good spark I'd say the ignition is working ok.
I would next check for correct valve lash and that there is the correct amount of fuel in the float bowls.  Set the idle mix screw each side at 3/4 turn out from light seating and the throttle stop screws 1 full turn on from where they start touching the butterfly valve.
I'd also check that the choke is working, it makes starting a lot easier.
You've probably done all this already, just my 2p worth.  If all these check out it should really be starting ok.  The only thing left is the air intake, or revisiting the carb rebuild.
Green Dyna is the correct one for points.

Pretty sure I can spot a rubber timing hole bung in Mrclubike's 'front hole'.
  

 1985 Black R65  -  2001 DRZ400 dirt only
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Mrclubike
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Re: R65 CPR
Reply #11 - 07/06/18 at 20:41:52
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BooG wrote on 07/06/18 at 07:01:21:
PS: I would put a rubber in your hole to stop water/dust debris etc.....please don't take that the wrong way!


It is Plugged with a timing hole plug  Grin
  

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Tony Smith
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Re: R65 CPR
Reply #12 - 07/07/18 at 01:21:47
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I'd reckon a good candidate for non start with good spark is clogged start enriching jets (they are in the float bowls). To test for this buy an aerosol can of starting fluid (in Australia "Start Ya Bastard" outsells all other brands in spite of the contents being identical and a slightly higher price, buggered if I know why Smiley.

Anyway, see f you can get it running on starter fluid and if you come back several times during the course of the day and it starts fine, but will not start the next day, book yourself in for a carb refresh, but clean those pesky starting jets first and see what happens. BTW, contrary to any other jet you might handle, you do not need to be too gentle with these, they do after all only come into play when the choke ;ever is operated - clean them with oxy set jet files. If your bike sudden;y starts properly, order a complete carb rebuild kit and have at it.
  

1978 R100RS| 1984 R65 | 1984 XT350 | 1992 KLE500 | 2002 R1150GSA
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