I was picking at my 60/5 this evening. Your videos are super comprehensive. The quality issues you are discovering with "new" stuff is scaring me. Buying "new" parts only to discover they are worse than used originals....... Glad you are catching this stuff.
FYI. I have hand scraped bushing this size for early Toyota LandCruisers. It may be a lost art but really it was quite easy, quick and way more precise than other methods, honing or reaming. Changing the clearance by tenths (.0001") was a breeze. Thanks for the video. I have many "R's" over many years and just bought another. What fun.
Hand scraping is still very much in use today in industrial machinery and is far from a lost art. I've encountered machines that have been through this process. Scraped surfaces are effective at holding oil within the voids, ensuring continuous lubrication between two surfaces. On older industrial machines, you often see flat, hand-scraped surfaces-not always for pinpoint accuracy but because it was a cost-effective way to create a flat surface while also keeping oil between the contact points. In those days, felt was commonly used for machine way seals, helping to remove contaminants and assist in lubrication. Nowadays, however, most machines are equipped with nitrile wipers, as the surfaces are usually ground and hardened. As for the Toyota LandCruiser, are the bushings split bushings (consisting of two halves that fit together) or are they a solid bushings? It's great to hear that you're able to handle your own repairs with such excellent results! And I'm glad you've had many BMW airhead bikes over the years. Which one was your favorite? Regards Andreas
Another great video, thank you. The later model rockers did away with the o-rings under the rocker arm posts. In your next video could you explain how the oil passage path on your original rockers work?
Thank you, Allan! Yes that is correct, the made small changes to the too end of the newer engines and in a future video I‘ll get to that. In the upcoming assembly video I’ll discuss the whole lubrication system. This will include the oil pump, oil filter, bypass valve, pressure relief valve and lastly how the oil flows to the cylinder heads (rocker arms). I hope you will find this beneficial. Regards Andreas
I fully agree with you on that! The previous bushings were horrible compared to these (HAHA)! You won't have to wait very long...the engine rebuild video is just around the corner:) Thanks for watching and leaving a comment
Thank you, Stew! It took a while to reach this stage, but I can now confidently say that the parts I'm assembling meet the specifications outlined in the service manual. Stay tuned for the upcoming engine assembly video😊👍🏽 Regards Andreas
The bushing that rotates on two surfaces is called Full Floating. Full floating allows the bushing to rotate and thus the wear is transferred to all surfaces instead of localized wear. Distributing the wear will provide a much longer service life. I have found this practice on some King Pins in front axles of some vehicles and some hybrid designs. Early Corvette's from the 50's used this full floating bushing principle on their King Pins that locate the front spindles. I hope this is enough info.
This is understandable. In practice, it usually doesn’t work effectively without higher oil pressure. With the valvetrain components constantly pressing outward, metal-to-metal contact becomes the primary interaction point. The clearance, or tolerance, allows an open space between the shaft and bushing, or between the bushing and rocker arm bore. Oil pressure will also tend to fill this space rather than fully lubricate the contact surfaces. Even with precision machining, one side will always bear a higher load, leading to increased wear. While a floating bushing may slightly improve service life, it also distributes wear across three key components instead of just two, as is the case with a solid bushing.
Mate the parts you received from Germany were junk and I hope you were able to get a full refund. The work you showcased in this video truly demonstrates outstanding craftsmanship and metiulous attention to detail. I'm looking forward to the engine assembly video!
Yes you are right. The parts were well out of the factory specifications and could not be used for the engine rebuild I am doing. I did receive a full refund...but I had to return the parts, which I did not get refunded for. Thank you for your kind words! I will continue to create more videos like this and offer as much information as possible. Regards Andreas
I'm glad you got the quality that you paid for this time. The stuff you got from Germany loox like it has rifling inside it up against the parts that yuve managed to source out online and have machined locally. I presume yuve had snow already as my relations in Winnipeg already have but I bet you can't wait to try the finished bike out!!
I'm very happy with the parts I received and somewhat lucky they weren't of the same quality as the ones from Germany. I had to cross my fingers while ordering because both sellers could only confirm they were OEM parts without providing rocker arm shaft sizes. My local machine shop did a great job with the bushings, and I'm pleased I could resolve this issue. I would love to find some older machines to assist with repairs like this in the future and would do the work myself. We already had snow here about a month ago, and it slowly melted off due to warmer days. Since then, we've only had cold nights without any snowfall. It's too cold for the riding season, but I'm sure I'll enjoy this bike next season. I can't wait to have this bike on the road! Have a wonderful day, Simon! Cheers.
Thanks a lot man 😀 I'm sitting on so many parts it's not even funny! In the next few episodes the bike will take shape and it should be back on both wheels. It'll definitely be a fun ride and I cannot wait to share the footage with you. Thank you for your support!! Cheers
Hi there! The valve guides were replaced by my local machine shop. and honed for brand new valves. The valve guides are fairly thin-walled, but you can heat up the cylinder head to roughly 180°C and drive them out with a punch. I will share more about this topic during the engine assembly video. Coming soon. Cheers
Great question Diogo! I do not have an update on the Renault R5 at this moment, as I really want want to finish the BMW R60/5. In the next few weeks, I will have multiple videos about the BMW, because it will soon be done. After that I will invest time in the Renault. Regards Andreas😊👍🏽
![Remise en route BMW r60/5 sortie de grange [2/3]](/img/n.gif)
I was picking at my 60/5 this evening. Your videos are super comprehensive. The quality issues you are discovering with "new" stuff is scaring me. Buying "new" parts only to discover they are worse than used originals....... Glad you are catching this stuff.
FYI. I have hand scraped bushing this size for early Toyota LandCruisers. It may be a lost art but really it was quite easy, quick and way more precise than other methods, honing or reaming. Changing the clearance by tenths (.0001") was a breeze. Thanks for the video. I have many "R's" over many years and just bought another. What fun.
Hand scraping is still very much in use today in industrial machinery and is far from a lost art. I've encountered machines that have been through this process. Scraped surfaces are effective at holding oil within the voids, ensuring continuous lubrication between two surfaces. On older industrial machines, you often see flat, hand-scraped surfaces-not always for pinpoint accuracy but because it was a cost-effective way to create a flat surface while also keeping oil between the contact points. In those days, felt was commonly used for machine way seals, helping to remove contaminants and assist in lubrication. Nowadays, however, most machines are equipped with nitrile wipers, as the surfaces are usually ground and hardened.
As for the Toyota LandCruiser, are the bushings split bushings (consisting of two halves that fit together) or are they a solid bushings?
It's great to hear that you're able to handle your own repairs with such excellent results! And I'm glad you've had many BMW airhead bikes over the years. Which one was your favorite?
Regards
Andreas
Another great video, thank you. The later model rockers did away with the o-rings under the rocker arm posts. In your next video could you explain how the oil passage path on your original rockers work?
Thank you, Allan! Yes that is correct, the made small changes to the too end of the newer engines and in a future video I‘ll get to that.
In the upcoming assembly video I’ll discuss the whole lubrication system. This will include the oil pump, oil filter, bypass valve, pressure relief valve and lastly how the oil flows to the cylinder heads (rocker arms).
I hope you will find this beneficial. Regards Andreas
@@WorkshopRebuild wonderful, tnx
Your local machine shop honed those bushings really well! I cannot wait to see the engine assembly in the next video 😎👍🏻
I fully agree with you on that! The previous bushings were horrible compared to these (HAHA)! You won't have to wait very long...the engine rebuild video is just around the corner:) Thanks for watching and leaving a comment
Nice to see you back working on it! 👍🏻
Thank you, Stew! It took a while to reach this stage, but I can now confidently say that the parts I'm assembling meet the specifications outlined in the service manual. Stay tuned for the upcoming engine assembly video😊👍🏽 Regards Andreas
The bushing that rotates on two surfaces is called Full Floating. Full floating allows the bushing to rotate and thus the wear is transferred to all surfaces instead of localized wear. Distributing the wear will provide a much longer service life. I have found this practice on some King Pins in front axles of some vehicles and some hybrid designs. Early Corvette's from the 50's used this full floating bushing principle on their King Pins that locate the front spindles. I hope this is enough info.
This is understandable. In practice, it usually doesn’t work effectively without higher oil pressure. With the valvetrain components constantly pressing outward, metal-to-metal contact becomes the primary interaction point. The clearance, or tolerance, allows an open space between the shaft and bushing, or between the bushing and rocker arm bore. Oil pressure will also tend to fill this space rather than fully lubricate the contact surfaces.
Even with precision machining, one side will always bear a higher load, leading to increased wear. While a floating bushing may slightly improve service life, it also distributes wear across three key components instead of just two, as is the case with a solid bushing.
@@WorkshopRebuild You are in error. Quite disappointing.
I‘d appreciate to hear your thoughts
Mate the parts you received from Germany were junk and I hope you were able to get a full refund. The work you showcased in this video truly demonstrates outstanding craftsmanship and metiulous attention to detail. I'm looking forward to the engine assembly video!
Yes you are right. The parts were well out of the factory specifications and could not be used for the engine rebuild I am doing. I did receive a full refund...but I had to return the parts, which I did not get refunded for.
Thank you for your kind words! I will continue to create more videos like this and offer as much information as possible. Regards Andreas
I'm glad you got the quality that you paid for this time. The stuff you got from Germany loox like it has rifling inside it up against the parts that yuve managed to source out online and have machined locally. I presume yuve had snow already as my relations in Winnipeg already have but I bet you can't wait to try the finished bike out!!
I'm very happy with the parts I received and somewhat lucky they weren't of the same quality as the ones from Germany. I had to cross my fingers while ordering because both sellers could only confirm they were OEM parts without providing rocker arm shaft sizes. My local machine shop did a great job with the bushings, and I'm pleased I could resolve this issue. I would love to find some older machines to assist with repairs like this in the future and would do the work myself.
We already had snow here about a month ago, and it slowly melted off due to warmer days. Since then, we've only had cold nights without any snowfall. It's too cold for the riding season, but I'm sure I'll enjoy this bike next season.
I can't wait to have this bike on the road! Have a wonderful day, Simon! Cheers.
Pretty slick! Can't wait till you get it running!
Thanks a lot man 😀 I'm sitting on so many parts it's not even funny! In the next few episodes the bike will take shape and it should be back on both wheels. It'll definitely be a fun ride and I cannot wait to share the footage with you. Thank you for your support!! Cheers
Cool ! I wonder if you change the valve guide ? it seems to be a fragile parts ?
Hi there! The valve guides were replaced by my local machine shop. and honed for brand new valves. The valve guides are fairly thin-walled, but you can heat up the cylinder head to roughly 180°C and drive them out with a punch.
I will share more about this topic during the engine assembly video. Coming soon. Cheers
No oil grooving on inside of bushing?
Do you have any update on the Renault 5?
Great question Diogo! I do not have an update on the Renault R5 at this moment, as I really want want to finish the BMW R60/5. In the next few weeks, I will have multiple videos about the BMW, because it will soon be done.
After that I will invest time in the Renault. Regards Andreas😊👍🏽