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Author Topic: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE  (Read 11728 times)

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #435 on: January 18, 2018, 10:36:46 PM »
Plan on dyeing young then do you.   :-*
I'm not planning to die young Mick but, who knows when your ticket is going to expire. Anyways, 30 years time I will be almost 87 and not getting any younger  ;D ;D ;D ;D :-*
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new
LINK TO THE CB400/4 DETONATION THREAD
http://www.sohc.co.uk/index.php/topic,14609.msg122071/topicseen.html#new

Offline mike the bike

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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #436 on: February 10, 2018, 08:01:01 AM »
Mick.   After reading Julie's rebuild thread, you should be inspired to blow the dust off your spanners and have a go yourself.
Why did I get rid of that one

Offline Green1

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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #437 on: February 10, 2018, 06:39:27 PM »
I would love to strip and rebuild it myself I just don't get the same amount of spare time as you older chaps and chapets.
Its always one step forward two steps back as now I have to rebuild the little CG as my idiot brother crashed it.  ::)
I am a step closer now though as I finally got around to doing the headrace bearings on the Pegaso.
Current bikes
Honda CB750k1 Valley Green Metallic
Honda CB750k1 Candy Gold
Honda CB550k Candy Jade Green
Honda CB400 Parakeet Yellow
Honda CG125
Aprilia Pegaso 650
Moto guzzi 1200 sport

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #438 on: February 10, 2018, 06:43:44 PM »
If I ever get really bored and feel life's not worth living unless I rebuild another CB400/4, I will do your for you. Hope your Brother is OK?.
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new
LINK TO THE CB400/4 DETONATION THREAD
http://www.sohc.co.uk/index.php/topic,14609.msg122071/topicseen.html#new

Offline Green1

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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #439 on: February 10, 2018, 06:48:08 PM »
He's fine idiots bounce well.
Current bikes
Honda CB750k1 Valley Green Metallic
Honda CB750k1 Candy Gold
Honda CB550k Candy Jade Green
Honda CB400 Parakeet Yellow
Honda CG125
Aprilia Pegaso 650
Moto guzzi 1200 sport

Offline royhall

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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #440 on: March 31, 2018, 07:54:59 PM »
Going back 2 days.

I put the dowels in and as these dowels have oil coming up through them, Trig said that he always fits an ‘O’ ring around the dowel, just in case. This ‘O’ ring is not mentioned anywhere in the service manual and does not come in the gasket set. Trig punched out the hole in the gasket just a little larger to accommodate the seal. I then fitted the gasket, trying it both ways round to make sure I had ‘the best fit’. In fact this pattern gasket set has been very good for sizes, shape, holes in the exact right place etc. I then dropped in the cam blades making sure they located correctly.

The extra 'O' ring Trig fitted

(Attachment Link)
Can you remember what size the extra o-ring is Julie, and what size did Trig punch out the gasket to. Nice work on the rebuild. Cheers.
Current bikes:
TriBsa CCM 350 Twin
CB350F in Candy Bacchus Olive (needs minor engine work)
CB750F2 in Candy Apple Red
CB1300SA in Black
Triumph T100C
Suzuki GS1000HC (current project)
CB450K0 Black Bomber

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #441 on: March 31, 2018, 08:04:26 PM »
Going back 2 days.

I put the dowels in and as these dowels have oil coming up through them, Trig said that he always fits an ‘O’ ring around the dowel, just in case. This ‘O’ ring is not mentioned anywhere in the service manual and does not come in the gasket set. Trig punched out the hole in the gasket just a little larger to accommodate the seal. I then fitted the gasket, trying it both ways round to make sure I had ‘the best fit’. In fact this pattern gasket set has been very good for sizes, shape, holes in the exact right place etc. I then dropped in the cam blades making sure they located correctly.

The extra 'O' ring Trig fitted

(Attachment Link)
Can you remember what size the extra o-ring is Julie, and what size did Trig punch out the gasket to. Nice work on the rebuild. Cheers.
No Roy, I can't tell you the size of the O ring because Trig can't remember  ::)
But, it fitted nicely over the dowel and Trig punched the gasket out to the correct size to accommodate the O ring. I'm not even going to have a guess at the size but I'm sure you will find something that will fit and do the job.
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new
LINK TO THE CB400/4 DETONATION THREAD
http://www.sohc.co.uk/index.php/topic,14609.msg122071/topicseen.html#new

Offline ogri211

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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #442 on: April 13, 2018, 05:47:45 AM »
Would I be right in saying that the oring section would just be slightly thicker than the gasket so I would imagine that it would be a pretty thin oring and not one of these that you get in the generic oring kits also I think it would be nitrile as there is a fair bit of heat.
Triumph Rocket3, Suzuki GT 750A, Kawasaki H1B, and Honda 400 Four on the rebuild.

Offline BrianC500

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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #443 on: April 15, 2018, 10:51:39 PM »
I was just reading some of the earlier pages regarding spark plugs. NGK recommend D8EA plugs in the CB400 F1/F2 not the resistor type. www.NGKpartfinder.co.uk the site is a bit long winded but easy enough to navigate.
Previous bikes CB175K6, GS550EZ, GL1100

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #444 on: April 15, 2018, 11:28:45 PM »
D8EA's are what i started using early last year to resolve a hot idle problem. Worked a treat.
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new
LINK TO THE CB400/4 DETONATION THREAD
http://www.sohc.co.uk/index.php/topic,14609.msg122071/topicseen.html#new

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #445 on: April 17, 2018, 06:47:10 PM »
Much excitement today in the House of Hondas, I have got all my carb bits back from the platers. I just need to find them in this pile and rebuild the carbs and I can get this old girl back on the road. Yipeeeeee, so excited. [ Guests cannot view attachments ]
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new
LINK TO THE CB400/4 DETONATION THREAD
http://www.sohc.co.uk/index.php/topic,14609.msg122071/topicseen.html#new

Offline K2-K6

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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #446 on: April 17, 2018, 06:54:04 PM »
They all look nice.

[ Guests cannot view attachments ]


Looks like one of these games for vintage Honda owners to while away those long dark nights out on the fens.

Offline UK Pete

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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #447 on: April 17, 2018, 07:00:04 PM »
Did you have to keep the  stuff for platers
It looks like its come out really well
I need to find a decent plater can you recommend


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Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #448 on: April 17, 2018, 07:08:44 PM »
They all look nice.

(Attachment Link)


Looks like one of these games for vintage Honda owners to while away those long dark nights out on the fens.
Very good Nigel and yes, it's a game only people with classic bikes or cars would understand.
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new
LINK TO THE CB400/4 DETONATION THREAD
http://www.sohc.co.uk/index.php/topic,14609.msg122071/topicseen.html#new

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
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Re: CB400/4 ENGINE STRIP, ASSESSMENT AND REBUILD BY JULIE
« Reply #449 on: April 17, 2018, 07:12:08 PM »
Did you have to keep the  stuff for platers
It looks like its come out really well
I need to find a decent plater can you recommend


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If you meant 'clean' Pete, then yes. We always use Allenchrome in Pocklington. We have never had a bad bit of metal back from them but as usual, its the cleaning you do yourself that gives the good outcome.
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new
LINK TO THE CB400/4 DETONATION THREAD
http://www.sohc.co.uk/index.php/topic,14609.msg122071/topicseen.html#new

 

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