Author Topic: Honda restoration  (Read 6780 times)

Offline Madgrandad

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Honda restoration
« on: September 08, 2024, 11:08:31 AM »
Hi all,

I'm am restoring a 1978 Honda CB400 4F out of boxes. I'm coming to the end of the build and was wondering if it is best to keep the original seat that has a tear in it and it is a bit rusty, or buy a new after market one?

Any suggestions welcome. See attached picture of seat on the bike.

Offline McCabe-Thiele (Ted)

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Re: Honda restoration
« Reply #1 on: September 08, 2024, 11:10:42 AM »
A member here has had issues with new DS seats, if it was my bike I would have your existing seat restored by a specialist or even by a local upholsterer.
« Last Edit: September 13, 2024, 12:51:34 PM by McCabe-Thiele (Ted) »
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

Offline Johnny4428

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Re: Honda restoration
« Reply #2 on: September 08, 2024, 11:33:56 AM »
That is a lovely looking 400. The seat is letting down a bit, it would need to be stripped and base shot blasted and painted/ powder coated and the seat rebuilt with new cover. It is expensive to get it professionally restored I’ve had a couple done with P&K classics. But hey will supply materials if you want to tackle it yourself. Alternative is a replacement seat.
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)

Offline Madgrandad

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Re: Honda restoration
« Reply #3 on: September 10, 2024, 11:28:00 AM »
Thanks McCabe-Thiele and Jonny4428. I'll have a look at P&K classics 👍

Offline sye

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Re: Honda restoration
« Reply #4 on: September 10, 2024, 01:43:18 PM »

Online Laverda Dave

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Re: Honda restoration
« Reply #5 on: September 12, 2024, 11:23:20 AM »
A very nice looking 400/4. I've had a few 'issues' with the replacement seat. Basically the hinge fixing bolts and the plunger mounting bolts are incorrectly positioned on the two seats I have been sent. I have had to elongate the hinge fixing plate by 15mm to get the seat to fit anywhere close and even now it is still rubbing on the rear of the fuel tank. I fitted my genuine seat from my other bike and it fitted perfectly.
Your seat looks good apart from the cover, I would recommend you get it recovered, the seat cover from Saddle Craft as posted by Sye looks very good.
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'The Flying Banana'
1982 Laverda 120 Jota
2020 Royal Enfield Interceptor 650
1990 Honda VFR400R NC30

Offline Mikep328

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Re: Honda restoration
« Reply #6 on: September 12, 2024, 12:23:50 PM »
I bought a seat cover from PK Classics.  The seat cover on the bike when I bought it was a new (per receipts) DSS seat cover.  It looked nice but I wanted the Honda logo on the back.  I thought about doing the stencil that folks here have had success with but I didn't feel confident that I could do it satisfactorily appearance-wise.  The PK cover went on with no particular difficulty even though it was the first seat cover I have ever installed.  Just took my time and it looks absolutely original!  :)
Mine:
1976 CB400F
1973 Norton 850 Commando
2015 BMW R9T
2017 BMW R1200RS
2021 Moto Guzzi V7 Special
Wife's:
2015 Ducati Diavel
2019 Honda Africa Twin
2019 Honda NCT750

Offline McCabe-Thiele (Ted)

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Re: Honda restoration
« Reply #7 on: September 13, 2024, 12:55:07 PM »
The seat on my 400 had been recovered by a PO it has the Honda logo - the seat base is a type  of thick plastic not metal like my 500. Not sure if its a later version by Honda or aftermarket,  it fits perfectly.
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

Offline Madgrandad

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Re: Honda restoration
« Reply #8 on: September 16, 2024, 02:10:45 PM »
Thanks all for your suggestions. I think I'll get the original seat recovered. Then sell it the bike.