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I bought a hotshims kit- but then discovered once I was mid job that the jump between sizes in the kit was greater than from the Honda factory.
So I ended up having to order some Honda shims anyway to get the valves where I wanted them.
If I had to do it again- I would just open her up, do your measurements, and then order the shims you need once you move things around.
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Thanks for the advice PD. I’ll do that.
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The kits will leave you with a bunch you don't need, and often not enough of the ones you do need. Shims are expensive, even for a Lord!
If you end up needing to adjust, for me the hardest part was wanking around in the limited space with the adjuster. No need to touch it if you don't adjust. Be sure to torque the cams to recheck adjustment. Don't just snug them a bit.
I ended up just removing the adjuster completely, performing the adjustment. then winding the adjuster in and securing it with a zip tie through one of the mounting holes using my ground off Allen wrench adjusting tool.
Then install the adjuster and secure it with the one screw, leaving just enough play to slide the zip tie out. Cut and remove the zip tie, the adjuster will pop out. secure the remaining screw and tighten both. Then I wound the adjuster out a few turns and released it again to reset it.
This may sound clumsy, but I got frustrated with my tool releasing unintentionally.
Don't forget to rotate the crank a few times to check your cam timing.
I had to try a few places locally for shims, had good luck with the Yamasaki dealer.
Ben
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From the Honda service manual;
Made mine from 1 mm. copper, worked fine; find the slot inside the tensioner, wind clockwise till the stop and return until the wider part of the tool lines up with the four outer slots and push the tool in those slots to lock the unit.
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Yea- I made one from thin scrap I had lying around. Real easy- as it doesn't take much to turn it so the metal can be just about anything.
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Be sure to torque the cams to recheck adjustment. Don't just snug them a bit.
Hi Ben, can you please explain why you suggest to torque the cams (I assume you mean the cam holders) as opposed to just snugging them up prior to inspecting the clearances? I understand that if they are loose the adjustment will not be accurate, but do you believe that snugging them to say 50% of the required torque will make a difference? I'm not sure about the CB1100, but my shop manual for my VFR800 states that the cam holder bolts should be replaced whenever they are removed. This leads me to believe that tightening the bolts to their full torque causes the bolts to stretch beyond their elastic limit, therefore requiring them to be replaced ever time they are fully tightened. Thank you.
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I'm sure he meant the cam holders need to be torqued.
Also, per the Honda service manual for the CB1100, the cam holder bolts do not need replacing once removed.
(10-20-2020, 01:57 PM)Dave_imp Wrote: Be sure to torque the cams to recheck adjustment. Don't just snug them a bit.
Hi Ben, can you please explain why you suggest to torque the cams (I assume you mean the cam holders) as opposed to just snugging them up prior to inspecting the clearances? I understand that if they are loose the adjustment will not be accurate, but do you believe that snugging them to say 50% of the required torque will make a difference? I'm not sure about the CB1100, but my shop manual for my VFR800 states that the cam holder bolts should be replaced whenever they are removed. This leads me to believe that tightening the bolts to their full torque causes the bolts to stretch beyond their elastic limit, therefore requiring them to be replaced ever time they are fully tightened. Thank you.
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Just a video from " zams channel", very similar to our engine but at 16 min. into the clip he loosens the cam chain tensioner and the chain loses sync? and makes the job more difficult.
Otherwise a very good technical guy but he makes the odd mistake which we can learn from.
https://www.youtube.com/watch?v=Mcug9M6vVms
Valve clearances at 105.000 km. since 30.000 km. at 24 min's.
I'm fairly sure it's 70.000 km. since the valves have been checked, Zams channel Marty replies;
"Wenn es nicht schon seit 70 Tkm funktioniert hätte, wäre ich auch nicht entspannt. Aber "so" sehe ich das eher als Feature als als Fail. Ansonsten habe ich von LKM noch nichts dubioses gehört. Vielleicht "höre" ich an den falschen Stellen. "
Hopefully my german was good enough to translate his findings correctly.
Thanks Joe for pointing out NOT to release the tension of the cam chain, i have not done so as well because i could not see a clear reason for it.
He also notices the camshafts for in and ex are swapped ( tuned? ) at 26 min. someone comments about this and he replies; bought secondhand at 30.000 km.
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(11-24-2020, 07:40 AM)max_imp Wrote: Just a video from " zams channel", very similar to our engine but at 16 min. into the clip he loosens the cam chain tensioner and the chain loses sync? and makes the job more difficult.
Otherwise a very good technical guy but he makes the odd mistake which we can learn from.
https://www.youtube.com/watch?v=Mcug9M6vVms
Valve clearances at 105.000 km. since 30.000 km. at 24 min's.
I'm fairly sure it's 70.000 km. since the valves have been checked, Zams channel Marty replies;
"Wenn es nicht schon seit 70 Tkm funktioniert hätte, wäre ich auch nicht entspannt. Aber "so" sehe ich das eher als Feature als als Fail. Ansonsten habe ich von LKM noch nichts dubioses gehört. Vielleicht "höre" ich an den falschen Stellen. "
Hopefully my german was good enough to translate his findings correctly.
Thanks Joe for pointing out NOT to release the tension of the cam chain, i have not done so as well because i could not see a clear reason for it.
He also notices the camshafts for in and ex are swapped ( tuned? ) at 26 min. someone comments about this and he replies; bought secondhand at 30.000 km.
To release the tension of the cam chain is mandatory and also described in Honda's workshop manual. The tension would press the cam into the bearings and changes the measurement. We are talking about 1/100 of a millimeter.
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The only reason to take the tension off the chain is to facilitate removal of the cams. The valve lash measurements will not change due to releasing the cam chain tension. They are held firmly down by the 16 bolts and 4 holders. Additionally, when the engine is running, the tension is on the chain.
The step specified in the manual is not wrong; it's just in the wrong place. It should have only been printed in the cam removal section. There are rare errors in the manuals (if you want examples, I'll point some out). I'm very much by the book, but there is no articulable reason to take the tension out before taking measurements.
If you wish, you can prove it to yourself be measuring the clearances with and without chain tension. They will be exactly the same.
(11-24-2020, 08:21 AM)Django_imp Wrote: (11-24-2020, 07:40 AM)max_imp Wrote: Just a video from " zams channel", very similar to our engine but at 16 min. into the clip he loosens the cam chain tensioner and the chain loses sync? and makes the job more difficult.
Otherwise a very good technical guy but he makes the odd mistake which we can learn from.
https://www.youtube.com/watch?v=Mcug9M6vVms
Valve clearances at 105.000 km. since 30.000 km. at 24 min's.
I'm fairly sure it's 70.000 km. since the valves have been checked, Zams channel Marty replies;
"Wenn es nicht schon seit 70 Tkm funktioniert hätte, wäre ich auch nicht entspannt. Aber "so" sehe ich das eher als Feature als als Fail. Ansonsten habe ich von LKM noch nichts dubioses gehört. Vielleicht "höre" ich an den falschen Stellen. "
Hopefully my german was good enough to translate his findings correctly.
Thanks Joe for pointing out NOT to release the tension of the cam chain, i have not done so as well because i could not see a clear reason for it.
He also notices the camshafts for in and ex are swapped ( tuned? ) at 26 min. someone comments about this and he replies; bought secondhand at 30.000 km.
To release the tension of the cam chain is mandatory and also described in Honda's workshop manual. The tension would press the cam into the bearings and changes the measurement. We are talking about 1/100 of a millimeter.
To release the tension of the cam chain is mandatory and also described in Honda's workshop manual. The tension would press the cam into the bearings and changes the measurement. We are talking about 1/100 of a millimeter.
