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Hot Topic (More than 10 Replies) New-to-Me 1982 R65 Maintenance (Read 561 times)
Bob_Roller
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Re: New-to-Me 1982 R65 Maintenance
Reply #15 - 08/29/19 at 13:40:34
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I installed the Luftmeister version of rubber isolaters in place of solid spacers on the front rngine mount bolt .
I paid $30US in 1982 for this and I wouldn't do it again .
As has been mentioned, carb balance, ignition timing would probably help .
I'm just shy of 90,000 miles 145,000 km on my '81 R65 (original owner ) and I cannot detect any unusual vibration band, when I first got my '81 there was a pronouned vibration at 4250 rpm, came on like a switch was turned on .
  

'81 R65
'82 R65 LS  
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!
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georgesgiralt
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Re: New-to-Me 1982 R65 Maintenance
Reply #16 - 08/29/19 at 14:50:05
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Hi Bob,
I beat you ! My '82 has done more than 200 000 km with me on the saddle ... Like you, I bought her new when I saw her desperately living in the dealer's show room in 1984 ...
I'll retire next year, and plan to rebuild the engine, to take her to my ultimate death ...
  
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badbmwbrad
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Re: New-to-Me 1982 R65 Maintenance
Reply #17 - 09/02/19 at 22:11:39
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Installation of an Emerald Island Alpha electronic ignition corrected the elevated idle RPM condition.
  
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badbmwbrad
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Re: New-to-Me 1982 R65 Maintenance
Reply #18 - 09/04/19 at 10:46:09
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The Emerald Island Alpha ignition system is installed.  This eliminated the elevated engine idle RPM.  Now we're trying to figure out how to quell the engine vibrations.  Short-term fix is rubber mounting the engine at front mount.  Long-term fix is to install an R80 engine.
  
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Sejati
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Re: New-to-Me 1982 R65 Maintenance
Reply #19 - 09/08/19 at 02:45:50
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Glad to hear that, as I have same issue here...
  
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badbmwbrad
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Re: New-to-Me 1982 R65 Maintenance
Reply #20 - 09/09/19 at 06:36:14
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The engine vibration problem has been largely resolved by installation of rubber bushings (vibration dampener) on the front motor mount.  The vibration dampener is made from a '55 Chevy motor mount rubber bushing. 

The rubber bushing arrives too thick and needs to be cut into thirds.  One method to accomplish this is to clamp a bolt in a vice then slip the bushing over the bolt.  This provides a stable platform to cut the bushing using a hooked drywall knife.

The rubber bushing is sandwiched between a pair of fender washers.  Fastenal sells various sized rubber-lined sealing washers.  These sealing washers were placed rubber-to-rubber against the bushing to form a vibration dampener assembly.

The vibration dampener is substituted for the small spacer (located between engine and frame) as found on either side of the engine's front motor mounting rod.   My understanding is the motor mount torque should be reduced from 50 to 12 ft-lbs.  A redundant means for maintaining threaded fastener torque should be employed e.g. use of Loctite, drill/crosspin or perhaps substitution of a Nylock nut.   
  
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Sejati
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Re: New-to-Me 1982 R65 Maintenance
Reply #21 - 09/10/19 at 15:16:36
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Would you share some photo of this result?
  
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badbmwbrad
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Re: New-to-Me 1982 R65 Maintenance
Reply #22 - 09/10/19 at 20:44:36
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1/2" 18-8 stainless steel neoprene bonded sealing washers are ordered from Fastenal as stock unit 0173339.  Place the cut-down '55 Chevy motor mount rubber doughnut between the sealing washers placed rubber-to-rubber and insert between the engine and frame.

A Nylock nut is used in place of the BMW motor mount nut.
  

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