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1965 R60/2 Overhaul

pinbill
Posts: 24
Joined: Mon Aug 09, 2021 10:13 pm

Re: 1965 R60/2 Overhaul

Post by pinbill »

Thanks for the reassurance. It is fortunate that someone is still making the tools to work on these bikes. The wait has given me time to get some things done. All the hardware is polished, the frame is clean, the top end got dropped off for inspection yesterday. The motor electrics are coming off today along with the oil pan. I will be ready to go when the tools get here.

The trans has a nice click when up shifting between 1/2 and 2/3. 3/4 has a click/grind if you don't let the motor wind down really far. I have tried shifting it at lots of different speeds and rpms. It shifts ok, but is not quite right. It has 33k miles on it not a bad time for a complete service. I would like to check the the under shift and over shift bolt adjustment and upgrade to eccentric shift fork bushings.

I am particular when it comes to mechanical stuff working 100%. The 3/4 shift will detract from the overall riding experience. My r50/2 had the trans rebuilt at Beemer Worx in Tuscon and the shifting felt great in all the gears. I have everything apart and a whole winter to work on the bike. Once it is done, it will provide a few decades of trouble free service.

For the second round of tools, I bought the shim plate, the engine and trans how to videos, shim kit, the input shaft holder, the mold a gauge, steel parallels, sweet vintage depth gauge, flange puller, ect..

** Edit: The first round of tools came today. I can get the swing arm and final drive done to make a roller. Then I can start disassembling the engine. **

Thanks again for the help,

Bill

pinbill
Posts: 24
Joined: Mon Aug 09, 2021 10:13 pm

Re: 1965 R60/2 Overhaul

Post by pinbill »

Here are a few pics. Everyone loves pictures. How about the hand tied wires. Everything is very clean under the timing cover. I gave it a quick wipe down with no solvents. Looks like someone scratched "78" in the right connecting rod.The slingers or the top end might have been done before the bike was stored in 1978. Either way it had to be torn down to do the seals. I should have the crank out tomorrow.

Did the factory ever scratch numbers on the connecting rods?
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808Airhead
Posts: 1135
Joined: Wed Aug 05, 2009 9:06 pm

Re: 1965 R60/2 Overhaul

Post by 808Airhead »

All of the rods have that engraved from the factory. Make sure you have that MAP gas torch ready and freeze the crank and heat the engine in the oven before you put the crank back in.
Thomas M.
R69s - R60/2 - R67/2 - R51/3

User avatar
schrader7032
Posts: 8389
Joined: Fri Oct 27, 2006 3:00 am
Location: San Antonio, TX

Re: 1965 R60/2 Overhaul

Post by schrader7032 »

Unless the markings for my R69S rods were on the other side, mine only had molded numbers.
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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.

pinbill
Posts: 24
Joined: Mon Aug 09, 2021 10:13 pm

Re: 1965 R60/2 Overhaul

Post by pinbill »

Update!!

The slingers were full but not overly full. It was worth tearing the bike down. I am cleaning everything and waiting for parts. Can't wait to see the look on my wife's face when the engine case comes out of the oven. Hahaha.

I am trying to verify the machine had never been apart. I am 99% sure it hasn't been. If the number 78 was engraved on the con rod it supports it. I forgot to measure the pistons before I dropped them off at the machinist. I should have seen if the cylinders were on the stock bore.

Did the factory use a mix of bearings? I found mostly FAG and a few SKF bearings.

Thanks again for the help,

Bill

pinbill
Posts: 24
Joined: Mon Aug 09, 2021 10:13 pm

Re: 1965 R60/2 Overhaul

Post by pinbill »

Project Update!!

Got all the parts back. Crank and camshaft are prepped and in the freezer. I am ready to put the bottom end together on Friday. I sent the crank to Scotties Workshop and the bearings checked out OK. It got new wrist pin bushings and they got sized to the wrist pins. The cylinders are on the stock bore and the piston to cylinder clearance is .002.

The breather plate on the cam gear had a loose dowel. I think I dodge a bullet on this one. It is the two pin 6mm version. I am working to come up with a solution. I might be able to get an old stock one or have the old one welded.

I have one question. I lost the orientation for the oil baffle and wavy washer in the main seal. Can anyone tell me how they are situated in the rear bearing carrier?

Seek
Posts: 26
Joined: Mon Jun 13, 2022 11:39 am

Re: 1965 R60/2 Overhaul

Post by Seek »

Very nice bike Bill!

You can look in the parts book. Table 2 in this one: https://www.bmw-einzylinder.de/Start/ti ... 961_US.pdf
The oil baffle is installed with the raised edge to the rear of the engine, away from the bearing.

Daves79x
Posts: 620
Joined: Sun Aug 09, 2015 8:13 pm
Location: Knox, PA. USA

Re: 1965 R60/2 Overhaul

Post by Daves79x »

.002 is on the tight side. I'm surprised, especially since it's the stock bore. Don't spare the heat when warming the block!

Dave
Dave

pinbill
Posts: 24
Joined: Mon Aug 09, 2021 10:13 pm

Re: 1965 R60/2 Overhaul

Post by pinbill »

Great, thanks for the info.

I have the orientation. I just wanted to be sure that the oil baffle goes inside of the main seal not on the outside. The more I look at it the more it makes sense. It is unusual that the oil seal lip rides on the flywheel not the crank.

Yes it is tight at .002. the Barrington book calls for .003. Its hard to imagine the motor would be tighter than factory spec with 33k miles on the clock. The cylinder and pistons looked great so it may remain a mystery.

The only thing I have left to sort is the breather plate.

Here are some pictures. Everyone loves pictures....
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skychs
Posts: 521
Joined: Fri Nov 25, 2016 2:12 pm
Location: Richmond VA

Re: 1965 R60/2 Overhaul

Post by skychs »

Congratulations and good luck with the build. Your doing all the right things and I look forward to seeing more.

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