Author Topic: Fingers crossed....  (Read 1025 times)

Offline Athame57

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Fingers crossed....
« on: March 19, 2024, 03:58:54 PM »
Today I got Elen, my beloved 400/4 back from her engine rebuild  ;D . It took a while because of unforeseen things mostly, but what irritated me was that from the start I asked them to check the condition of my primary chain, which they said was ok when I rang in. But later they rang me to say they had to open her up again because the more senior mechanic from their main shop said the engine still had noises that can't be ignored, the primary needed to be changed.  ::) Also the clutch cushes where worn with too much movement. Well, I got a primary from DSS and a whole nice condition clutch from Steve at 400four bits. Top gear on countershaft had wear in it but after discussion on here I decided not to pay about £300.oo and wait about two more weeks for this item, I never had trouble with top gear btw. A leaky carb was also dealt with, but the carb repair kit I ordered from Legend never turned up, so I gave up and got one from DSS, that got here quick thank gawd, the other kit remains in transit or something.
Well... I happily went to collect her, and I was told they had done some work on the tail light too, I could see that already, after all ... it was upside down!  ;D Embarrassed mechanic put it right for me. That said she now sounds and feels great, rejuvenated even. When I get home I get the feeling someone was definitely in a hurry to finish up though because something didn't look right, the oil filter housing is on sideways, it was sort of smiling at me.  ;) mmmm... surely it can't do any harm if I plain leave it like that a while? The cost of the job was £700.oo, the parts I bought myself for around £500.oo.
« Last Edit: March 19, 2024, 04:44:24 PM by Athame57 »
I brake for animals!
1978 CB400F2 called Elen.

Offline Skoti

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Re: Fingers crossed....
« Reply #1 on: March 19, 2024, 04:31:09 PM »
The tail light was on upside down and the oil filter housing was on sideways.
Do you feel confident that all will be ok inside the engine?

Should we know who done the work for you so other members of this forum may be alerted?


Anyhow good luck with Elen and I hope all turns out ok for you.

Skoti
Motorcycling is Life, anything B4 or after is just waiting...


1976 Honda CB750F1

Offline Johnny4428

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Re: Fingers crossed....
« Reply #2 on: March 19, 2024, 04:36:43 PM »
😳😳 upside down taillight  and sideways oil filter housing. Didn’t even know that it was possible!😂
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Offline Athame57

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Re: Fingers crossed....
« Reply #3 on: March 19, 2024, 04:43:03 PM »
Should we know who done the work for you so other members of this forum may be alerted?
They are called 'Get Fixed' in London.  ;)
I brake for animals!
1978 CB400F2 called Elen.

Offline Athame57

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Re: Fingers crossed....
« Reply #4 on: March 19, 2024, 04:58:24 PM »
😳😳 upside down taillight  and sideways oil filter housing. Didn’t even know that it was possible!😂
Seeing is believing!  ;)
I brake for animals!
1978 CB400F2 called Elen.

Offline Laverda Dave

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Re: Fingers crossed....
« Reply #5 on: March 19, 2024, 05:24:37 PM »
Oh dear, that is one place I will not use.
From what you have said I can't understand how these people can call themselves motorcycle mechanics having missed vital clues of the engine condition and after you had asked them to check the primary chain! How many times have they opened the engine, three times? I bet they haven't cleaned up the casing joints between each opening and did they use Hondabond to reseal the joint? And why is the head mechanic not checking the work before they put the engine back together instead of telling them of the fault when it was running?
Cowboys, I would be asking for my money back and threaten them with Trading Standards.
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Offline K2-K6

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Re: Fingers crossed....
« Reply #6 on: March 19, 2024, 05:49:37 PM »
Have they used copper washers on crankcase bolts in that picture  ?

They look copper, possibly on main crank location too  :o

Offline Nurse Julie

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Re: Fingers crossed....
« Reply #7 on: March 19, 2024, 05:58:38 PM »
😱😱😱😱😱😱
LINK TO MY EBAY PAGE. As many of you know already, I give 10% 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

Offline Jan B

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Re: Fingers crossed....
« Reply #8 on: March 19, 2024, 07:46:32 PM »
Oh dear multiple things went sideways. Not a recommendation!!

What could be the risk in using copper washers?
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Offline K2-K6

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Re: Fingers crossed....
« Reply #9 on: March 19, 2024, 08:23:20 PM »
Oh dear multiple things went sideways. Not a recommendation!!

What could be the risk in using copper washers?

Ordinarily used in specific location, such as oil way through the joint etc, has very good sealing by being able to deform and match the surfaces its being used within.
 Changes status of material, from being soft initially (annealed by heating to red colour and quick quenching in water) to help seal, will squash under torque loading to help that sealing function,  but can ultimately settle to produce less loading on the joint than initially tightened to.

More often found on head studs which are themselves holding a slightly "elastic" in pure engineering terms, gasket between head and barrels. 

Steel washers effectively don't do any of this, are all but incompressible in use, if used on metal to metal joints like crankcase, or just the simple flanged head bolts on many locations on these engine.

Generally, its not good to use or replace one type with another without specific reasoning. 

Offline Bryanj

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Re: Fingers crossed....
« Reply #10 on: March 19, 2024, 08:40:32 PM »
There are copper looking washers under 2 head nuts on the 400 and 4 on the 750F2 if my memory is correct

Offline McCabe-Thiele (Ted)

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Re: Fingers crossed....
« Reply #11 on: March 20, 2024, 07:31:13 AM »
They did well to keep the filter housing horizontal when the top  lug was no where near.
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Offline K2-K6

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Re: Fingers crossed....
« Reply #12 on: March 20, 2024, 08:28:44 AM »
They did well to keep the filter housing horizontal when the top  lug was no where near.

I have always held onto the housing with one hand as I tighten it, obviously when located correctly.  It can be rocked as it's tightened until you can only just feel it touching the crankcase as the o-ring seal gets compressed, then tighten no more. Perfect seal, with not too much stress to allow them to be undone without recourse to rounding the 12mm head off  :)

Offline Laverda Dave

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Re: Fingers crossed....
« Reply #13 on: March 20, 2024, 08:47:59 AM »
They did well to keep the filter housing horizontal when the top  lug was no where near.

I have always held onto the housing with one hand as I tighten it, obviously when located correctly.  It can be rocked as it's tightened until you can only just feel it touching the crankcase as the o-ring seal gets compressed, then tighten no more. Perfect seal, with not too much stress to allow them to be undone without recourse to rounding the 12mm head off  :)

I always use the Honda specified torque setting on this bolt Nigel but is your method more suitable to avoid the dreaded 12mm original bolt head rounding off? I would normally fit the aftermarket 17mm bolt but on ratty I'm going standard = more risk to rounding off at some point in the future.
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Offline Matt_Harrington

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Re: Fingers crossed....
« Reply #14 on: March 20, 2024, 09:21:12 AM »
Such a shame that you have had this experience. Lets hope it has not put you off the bike and in reality, all is well and you can look forward to the summer riding Elen.
I suppose GetFixed deal with newer bikes most of the time and have minimal experience with 400/4's. I know it is no excuse but maybe a little mitigation.
Whenever I have had to take a classic car in for repair (due to my lack of time) I always chose a motor engineer as opposed to a mechanic. The former having an empathy with the car he (or she) worked on.
Anyway, get some miles on and see hoe it goes!
Matt
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CB400F 1976 -  Almost finished
CB400F 1977 - On the road!
Moto Guzzi Le Mans 2 - 1981 (undergoing a spruce up)
CD175 - To be restored
Triumph Speed 400

 

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