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Author Topic: r65 LS engine mount torque value?  (Read 742 times)

Offline jp9094

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r65 LS engine mount torque value?
« on: September 15, 2016, 03:05:12 PM »
Being new to BMW's I have been reading as much as I can. I came across a discussion about the "legendary" vibration problems with these bikes. Someone opined that the engine mounts need to be torqued properly to eliminate this.

As I have recently acquired my first torque wrench and am bothered by the vibration between 4000 and 5000 rpm I am keen to try it out on what would seem to be an easy task. Only problem is I cannot seem to find the proper torque value. Can anyone out there help. Many thanks in advance.
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Offline montmil

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Re: r65 LS engine mount torque value?
« Reply #1 on: September 15, 2016, 03:51:08 PM »
Engine mount nuts torque to 52-57ft/lbs. You may need to hold the other side's nut while torquing up. Then, go back and check your work on both sides / both bolts. BTW, most if not all R65s have a vibration around the 4500 tach reading. The "general knowledge" is to either shift gears, speed up or slow down. Nature of the beast thing.

There's an R65 Owners manual in pdf form in the FAQs Section, page 3. A wise investment would be the purchase of a Clymer or Haynes or both shop manuals. Another good technical resource is Snowbum's website.
« Last Edit: September 15, 2016, 03:54:35 PM by montmil »
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Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

Offline BPT

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Re: r65 LS engine mount torque value?
« Reply #2 on: September 15, 2016, 04:36:47 PM »
Regarding the manuals, I thought that I might be able to find something on eBay or maybe at Half Price Books for cheap but had no luck.  I got on Amazon and discovered that there are some really good deals on there for used books with reasonable shipping.

I ended up with a supposedly used one, but in great shape, for less than $25.
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1983 R65 w/ Velorex 562 Sidecar

Offline jp9094

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Re: r65 LS engine mount torque value?
« Reply #3 on: September 15, 2016, 07:17:08 PM »
Many thanks for the replies. I have both the Clymer (in hard copy) and the Haynes (in PDF ). I consulted the Clymer, but it only referred me to the general torque tables. When I looked at the Haynes, I found the numbers you quoted. Tomorrow I aim for 55 foot - pounds and I hope for the best!

Thanks again!
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Offline Barry

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Re: r65 LS engine mount torque value?
« Reply #4 on: September 16, 2016, 02:58:20 AM »
Quote
Tomorrow I aim for 55 foot - pounds and I hope for the best!

Your Haynes will have some lower torque figures for the post 85 R65's.  By way of experiment you might also want to try those lower figures and see how they compare in terms of vibration.  I found they reduced and pushed the vibration band up the rev range where it's no longer a bother me.  

I've been running those lower torque figures for many years now and the engine didn't fall out yet.
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Barry Cheshire, England 79 R45
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