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Author Topic: Rocker Arm Conversion  (Read 216 times)

Offline Adrian

  • Lives at Base of Mt. Olympus
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Rocker Arm Conversion
« on: March 19, 2023, 11:49:25 PM »
Hi there once again - I am considering fitting the rocker conversion to my 1984 R65. I am pretty okay with mechanics by & large so I don't see this as a problem for me.
I am wondering if anyone knows of some instructions - or a video - that explains the adjustments needed to get a properly fitted kit.
Any help is appreciated - thanks
1984 R65 (860)

Offline dogshome

  • Lives in Foothills of Mt. Olympus
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Re: Rocker Arm Conversion
« Reply #1 on: March 20, 2023, 01:34:56 PM »
Hi Adrian, is this to take out the lash side to side? I have a 1983 R65 and simple loosening of the associated headbolts and tweaking towards each other has resulted in nice 'clicky-clicky' tappets on my bike (as they should be). Keith.
肉(r?u)包(bāo)子(zi)打(dǎ)狗(gǒu) (meat+bun(2nd and 3rd)+hit+dog)
* Literally: To hit a dog with a meat-bun.:-O

Offline Tony Smith

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Re: Rocker Arm Conversion
« Reply #2 on: March 20, 2023, 06:22:45 PM »
The engine in the wife's R65/80 is a 1987 model and has the later rocker gear.

It is slightly quieter than the earlier type but the difference is not worth anything like the price.

As I said to the guy contemplating the conversion in one of the Stalkerbook groups - Advertising Victim.

I speak from personal experience.
In the mid 1980s that now deceased Shyster punting BMW modification bits convinced me to modify my R100's rocker gear for quieter operation.

The mod consisted of milling off an amount from both ends of the rocker (after first pressing the needle roller bearings further in). The next step was to fit two hardened , ground steel thrust washers sandwiching a Torrington bearing - from memory the same was was then used for a clutch thrust bearing.

Final adjustment was achieved by the use of shim washers to leave only a minute amount of play.

Any yes, the happy "ticky, ticky" of correctly adjusted tappets was replaced by the almost as loud "rustle rustle" from 8 Torrington bearings.

It is an odd sound and everytime I start that bike I am reminded of my gullibility.

And, by the way, I prefer "ticky ticky" to "rustle rustle"!
1978 R100RS| 1981 R100RS (JPS) | 1984 R65 | 1992 KLE500 | 2002 R1150GSA |

Offline Bob_Roller

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Re: Rocker Arm Conversion
« Reply #3 on: March 20, 2023, 08:25:29 PM »
If you look at a BMW parts site, there are stainless shims available to take up the rocker arm end clearance .

Item #17 .
I did this about 82,000 miles ago, when I had to replace a rocker arm and all that was available, was the updated arm with a plastic insert on one end .
I added shims to all the other rocker arms at that time .
I had one shim go bad about 10 years ago and had to replace it  .
« Last Edit: March 20, 2023, 08:35:16 PM by Bob_Roller »
'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 !!!!!