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CB750
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Motul oil
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Topic: Motul oil (Read 7158 times)
Pauarc
SOHC Member
Posts: 241
Motul oil
«
on:
November 01, 2023, 02:46:29 PM »
Does anyone know if Motul 3000 4T 10w40 Mineral Oil has got zddp in it or can it be added and would it be worth adding
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Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,
Cb750k2
McCabe-Thiele (Ted)
Grogu
Posts: 8621
Re: Motul oil
«
Reply #1 on:
November 01, 2023, 03:26:39 PM »
We have been here before Paul I suspect for commercial reasons many oil brands do not show the make up of additatives like zddp. I think agreement was for the 750 high zinc contect is essential for other less beneficial or unsuitable.
http://www.sohc.co.uk/index.php/topic,29416.msg283715.html#msg283715
«
Last Edit: November 01, 2023, 03:29:08 PM by McCabe-Thiele (Ted)
»
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Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration
http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556
McCabe-Thiele (Ted)
Grogu
Posts: 8621
Re: Motul oil
«
Reply #2 on:
November 01, 2023, 03:34:09 PM »
This article is interesting.
https://rislone.com/blog/engine-oil/the-effects-of-zinc-oil-additives-on-older-engines/
Logged
Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration
http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556
Pauarc
SOHC Member
Posts: 241
Re: Motul oil
«
Reply #3 on:
November 01, 2023, 06:07:43 PM »
I am clutching at straws now just can’t get a good gear change have fitted new clutch plates and steel plates I also change the adjuster in the clutch new cable I may try castrol gtx classic 10w40 mineral which has got zddp in it but it looks like engine out and look at gearbox is there any other options
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Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,
Cb750k2
Johnny4428
SOHC Jedi
Posts: 2945
Re: Motul oil
«
Reply #4 on:
November 01, 2023, 06:25:36 PM »
More liable to be a problem with the selector mechanism. I take it you have had a look?
Logged
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1
1978 Honda CB550K3
1999 ST1100 Pan European 50th Anniversary.
1975,1984,1986 Honda C90’s
1973 Honda CB750K3
1977 Honda CB550 (almost)
Pauarc
SOHC Member
Posts: 241
Re: Motul oil
«
Reply #5 on:
November 01, 2023, 06:49:47 PM »
Yes I been through selector mechanism change some of that I did notice that there not a lot of oil around the clutch
Logged
Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,
Cb750k2
Nurse Julie
1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
Grogu
Posts: 8718
Re: Motul oil
«
Reply #6 on:
November 01, 2023, 07:02:19 PM »
Thinking about it logically, if you've ridden the bike and the new clutch hasn't burnt out, there must be enough oil getting to the right place.
Edit... Is it all gears or just 1st gear that's the problem?
«
Last Edit: November 01, 2023, 07:04:44 PM by Nurse Julie
»
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LINK TO MY EBAY PAGE. As many of you know already, I give discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562
LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new
Pauarc
SOHC Member
Posts: 241
Re: Motul oil
«
Reply #7 on:
November 01, 2023, 07:15:29 PM »
Bad changing on all gears get worse when hot
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Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,
Cb750k2
K2-K6
Grogu
Posts: 6044
Re: Motul oil
«
Reply #8 on:
November 01, 2023, 07:57:20 PM »
Aah, I get the angle now
Zddp isn't likely to affect that in any significant way. It's ultimate function is too stop cold welding of two parts under the most extreme pressure, not as general lubrication. As I understand it from studies I've looked at some years ago, present in the range of 800~1100 ppm proved to be optimum but was specifically related to camshaft lobes and followers, this is tge principal reason for inclusion in older engine.
Worthwhile asking you to describe what specifically is the effect you're getting in regard to changing gear to discuss further. Is it going up down, clutched or not etc? I dont feel it's the oil doing it.
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Pauarc
SOHC Member
Posts: 241
Re: Motul oil
«
Reply #9 on:
November 01, 2023, 08:41:59 PM »
Bike drag’s and clunky when selecting 1st then if I change up the box slowly not to bad odd times it may miss a great but not the same gear when coming down the box clunky and hard to change some time it goes into neutral ok get worse after a run and bike get hot tried setting adjuster with no gap no difference just slips
Logged
Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,
Cb750k2
Pauarc
SOHC Member
Posts: 241
Re: Motul oil
«
Reply #10 on:
November 02, 2023, 07:50:40 AM »
Should you be able to just pull clutch outer off when you remove thrush washer mine fit loose (after removing plates)
«
Last Edit: November 02, 2023, 07:53:50 AM by Pauarc
»
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Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,
Cb750k2
Martin6
SOHC Expert
Posts: 383
Re: Motul oil
«
Reply #11 on:
November 02, 2023, 09:20:47 AM »
That ought to be fine, provided there's no play on the shaft (ooh mrs.!) when it's fully home. Not been into the Honda, but have on other bikes and they were a nice snug fit, but easy to pull off by hand.
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Martin6
SOHC Expert
Posts: 383
Re: Motul oil
«
Reply #12 on:
November 02, 2023, 09:26:45 AM »
That finger at 10 o'clock looks pretty notched, that could inhibit clutch plate movement?
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Pauarc
SOHC Member
Posts: 241
Re: Motul oil
«
Reply #13 on:
November 02, 2023, 10:10:48 AM »
Hi Martin
Well spotted will have to check may be flash giving a shadow look at some other pictures can’t see it but I will have to check
Thanks for your reply how’s your engine going
Paul
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Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,
Cb750k2
Pauarc
SOHC Member
Posts: 241
Re: Motul oil
«
Reply #14 on:
November 02, 2023, 12:19:21 PM »
Picture of linkage can anyone see any problems
Logged
Honda 90ss, Cb250k1 supper sport,
Cb400 four, CB750k7, Cb550, Cb750f2n,
Cb750k2
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Motul oil