Honda-SOHC

SOHC.co.uk Forums => Project Board => Topic started by: JamesH on April 28, 2015, 02:48:43 PM

Title: 1970 CB750 K0 - light restoration
Post by: JamesH on April 28, 2015, 02:48:43 PM: Couldn't resist the opportunity to post the first thread in the new 'projects' section.

Currently conducting a light restoration of a March '70 CB750 K0.

Started with this...

(http://images.tapatalk-cdn.com/15/04/28/0addbd048610bb1def9f67bfb54801e3.jpg)

After a few hours of stripping...

(http://images.tapatalk-cdn.com/15/04/28/ab22894a316bbe1917ddf7a44aa87d4a.jpg)

Currently looks like this....

(http://images.tapatalk-cdn.com/15/04/28/47f3500d1ebad42d1826a0d98d284d4c.jpg)
Will post updates and back-fill some of the details shortly....
Title: Re: 1970 CB750 K0 - light restoration
Post by: UK Pete on April 28, 2015, 06:23:25 PM: Nice work James,
I love stripping bikes down, its the building back up thats a pain
pete
Title: Re: 1970 CB750 K0 - light restoration
Post by: mike the bike on April 28, 2015, 06:35:51 PM: It's the building back up again that's most rewarding.
Title: Re: 1970 CB750 K0 - light restoration
Post by: UK Pete on April 28, 2015, 06:44:39 PM: Quote from: mike the bike on April 28, 2015, 06:35:51 PM
It's the building back up again that's most rewarding.

Yes i know, i just cant find time to do any of mine so it has now become a pain
pete
Title: 1970 CB750 K0 - light restoration
Post by: JamesH on April 28, 2015, 06:51:04 PM: Well I'm in parts gathering / buying mode at the moment. Frame has been blasted and is with the painters being etch primed and then painted semi-gloss black.

The mrs wasn't exactly chuffed that I used #1 daughters bedroom as overnight storage between blasting / paint ha ha...

And looks like they were using mig welding on the early frames in late '69 / early '70

(http://images.tapatalk-cdn.com/15/04/28/8e252ce87ee72513c6480740ec800963.jpg)

(http://images.tapatalk-cdn.com/15/04/28/6a32a69941fc356b6941c41bbf59dbc8.jpg)

(http://images.tapatalk-cdn.com/15/04/28/145e1bdff72bc14d6a120b9e6edc320f.jpg)
Title: Re: 1970 CB750 K0 - light restoration
Post by: Green1 on April 28, 2015, 08:00:27 PM: Got to love Jap welding :o

Mick
Title: Re: 1970 CB750 K0 - light restoration
Post by: JamesH on April 28, 2015, 08:05:09 PM: I think the guy who did my K0 may have been slightly blind...
Title: Re: 1970 CB750 K0 - light restoration
Post by: Green1 on April 28, 2015, 08:09:59 PM: Amazingly mine only lasted 44 years before braking.Do you think Honda will repair it under warranty?
Title: Re: 1970 CB750 K0 - light restoration
Post by: JamesH on April 28, 2015, 09:16:24 PM: Yeah was planning to walk into my local honda dealer with the bare frame and have it out with them...
Title: Re: 1970 CB750 K0 - light restoration
Post by: martin_uk on April 28, 2015, 10:08:29 PM: Great detailed images.

Interested to see progress.
Title: Re: 1970 CB750 K0 - light restoration
Post by: Tiny Tim on April 29, 2015, 07:23:39 PM: James can you give an idea on how much you pay for the frame painting etc. I've asked a couple of places near me for a quote but no one has given me a straight answer.
Cheers
Tim
Title: Re: 1970 CB750 K0 - light restoration
Post by: JamesH on April 29, 2015, 07:42:27 PM: Hi Tim. Well the blasting is about £100-120 and the painting is £250-350 depending on prep required. That's based on two coats of zinc etch priming and then the semi-gloss. Having said that the painter is doing me a favour and doesn't normally do (or want to do) bike frames - so I don't think he'll be open to me passing on details.....
Title: Re: 1970 CB750 K0 - light restoration
Post by: mike the bike on April 29, 2015, 08:16:59 PM: I've just stripped down my GS650G Katana prior to powder coating. Plenty evidence of MIG wire about, which I ground off.
Dropped the frame, yokes, various brackets, footrests etc, got quoted £190 but I knocked him down to £160.
It's still more than I thought, so I weighed in all my scrap stainless and wash pumps and got £90 for the lot.
Roll on Monday when I can collect it all.
Title: Re: 1970 CB750 K0 - light restoration
Post by: Tiny Tim on April 29, 2015, 08:22:16 PM: Thanks for the info James. I'm sure I can find a local painter, but as I said before they're not very forthcoming with prices for some reason. There is a local blasting company who offer a same day service. So I'm half way there.
Title: Re: 1970 CB750 K0 - light restoration
Post by: JamesH on April 29, 2015, 09:17:57 PM: Yeah it's a tricky one to price I think - most painters want to see the condition of the frame so they know how much rectification is needed to get a quality finish I guess.
Title: Re: 1970 CB750 K0 - light restoration
Post by: MCTID on April 30, 2015, 09:42:03 PM: In the 70's/80's I used to be a Certified Welding Inspector. I'd sack the fella who did this bit of chewing gum.....LOL.
Title: Re: 1970 CB750 K0 - light restoration
Post by: mike the bike on April 30, 2015, 10:03:36 PM: Looks like Stevie Wonder done it.
Title: Re: 1970 CB750 K0 - light restoration
Post by: JamesH on April 30, 2015, 10:04:07 PM: Yeah, problem is all of the early ones are like it....I'm reluctant to mess with the welds to be honest...
Title: Re: 1970 CB750 K0 - light restoration
Post by: AshimotoK0 on May 01, 2015, 06:43:55 PM: Nice detailed resto photo's James. my K0 frame resides in the spare bedroom too.

Blasting and powder coating for Frame /Swing/arm/both stands and all other black bracketry was 130 GBP round here and that's exactly what the guy who restores bikes in the 'Motorcycle Programme' on TV said he typically pays, when he gave a talk at Stafford last week Well he said 135 to be precise.
Title: Re: 1970 CB750 K0 - light restoration
Post by: JamesH on May 01, 2015, 07:28:10 PM: Yeah good point Ash - I did have the option to powder coat but decided to go the paint route this time. Expensive choice but will be good to see how it turns out...
Title: Re: 1970 CB750 K0 - light restoration
Post by: AshimotoK0 on May 01, 2015, 09:53:23 PM: HA HA JAMES SNAP !! (see you in the divorce courts ;D)

[attachimg=1][attachimg=2]
Title: Re: 1970 CB750 K0 - light restoration
Post by: UK Pete on May 02, 2015, 12:49:15 PM: looks great ash, just make sure the wife dont catch you in bed cuddling up to the frame
pete
Title: Re: 1970 CB750 K0 - light restoration
Post by: JamesH on May 02, 2015, 04:24:28 PM: Great minds think alike ha ha....