Honda CB750 Sandcast

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Messages - kp

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16
Molasses sure does work but for heavier rust. Vinegar for lighter rust. Usually a few days to a week followed by a cup or so of pool acid sloshed about for no more than a minute. Rinse thoroughly, then rinse again then fill with water and add a cup or more of bicarb soda to bring Ph to neutral. Dry the tank thoroughly then add a cup of penetrating oil and coat liberally to avoid further rusting. I use penatrol and it will never rust
Paint is personal choice. Powdercoat works and is not the nasty finish often claimed. Google powder coat and you will find the urban myths about powder coat busted
Powdercoat is a polyester urethane
2 Pac is the one many say to use. It's still nothing like the enamel of the original frame but will outlast you and me. Like powdercoat, it's a polyurethane and is a thicker than enamel finish. I usually have my frames painted in 2 pac with the addition of a flattening agent to take some of the bling out
I got this from the internet
Today, polyurethane coatings are applied using water-borne, solvent-borne, and high-solid or powder coating systems

17
"88 Model Distinctions" / DATE CODES
« on: January 27, 2023, 06:21:28 pm »
Posting this here as it seems the appropriate place
Kawasaki owners/restorers place emphasis on correct date codes. I've posted previously about date codes but I want to stress how important it is to keep original parts where possible. Nearly everything has a date code on early Honda machines. This includes such insignificant items such as rectifiers and coils
The following are the codes to look for
44 = 1969
4 = 1969
5 = 1970
9 = 1969 or September or 9th day. Depends on the location of the code so 999 (90909) could mean 9 Sept 1969
A, B, C = Oct, Nov, Dec
X, Y, Z = Oct, Nov, Dec
You may also see symbols on parts which at first sight are meaningless but in fact are Kanji or Katakana symbols which can represent numbers as date codes. I'm not about to list these as there are hundreds so google Katakana to see the numerous symbols. Often seen on early rod ends and engine parts
Here are some coils with date codes often missed by restorers. If the coils are beggared then not a lot you can do Even later manufactured coils have a code 1x could be Oct 81 or 91

18
New Member Introductions / Re: My early ko needs reincarnation
« on: January 21, 2023, 03:23:33 pm »
Ya better off posting on the Facebook site. Nobody replies on this site much these days

19
New Member Introductions / Re: Backyard find free cb750 sandcast
« on: January 02, 2023, 03:47:20 pm »
Great find. Reasonably early sandcast and numbers are close enough to be a match. Nevertheless, there is a lot of work and expense sitting in that trailer. All the best  :)

20
New Member Introductions / Re: Just bought sandcast #6678
« on: December 20, 2022, 03:57:31 pm »
Welcome. You will have a better time sourcing correct parts, given the higher VIN, than if was an early bike. My only advice is don't fall into the trap of using repop parts. There are still plenty of correct parts out there you just need to persevere in finding them.
The site is a bit dead these years but the information here is as good as it gets KP

21
Review of VIN'S For Directory / Re: Frame & Engine Number Spread
« on: December 16, 2022, 07:37:53 pm »
hi ya'all,
So I was in New Zealand recently and a local seller of some [apparent] renown was selling a sandcast for $80,000 NZD. The frame number and engine number were 6000 numbers [give or take] apart and I suggested that he should make a note on his ad that the engine wasnt the original engine. Well all hell broke loose and he accused me of calling him a  liar, cheat and crimnal and eventually he blocked me from Trade Me [the local sales site]. Subsequently he changed the ad to make comment that the guy he bought the bike off [a renowned US restorer who he wouldnt name] had gotten a Certificate of Authenticity from the 'official' Sandcast Authority' certifying it was genuine.
While I didnt claim nor infer it wasnt genuine, all I had done was suggest [so that he couldnt ever be accused of misrepresentation] that the engine likely wasnt the original. Its currently for sale for $60,000 NZD without NZ registration or much else for documentation.
In one respect I hope he gets his $60,000  as its increases the value of my collection through the roof, but at the same time I could see a few years down the road a disgruntled investor being mad as hell when he cant get his money back because the engine isnt the original one. Yes it may be a 'genuine' sandcast but where does one draw the line as to its true value. I guess the market will tell us the answer to that!
Al
I had a look at the listing and also asked the question about frame and engine number. Lots of waffle and not so helpful info provided by this guy. The bike, IMHO, isn't worth anywhere near that amount although I don't know the NZ market so it may be bang on the money. To be honest I think the restoration isn't that good, lot's of incorrect parts fitted. The fact he hasn't started the bike is a worry, but then he may have treated the internals so they don't gum up over time. Anyway, good read and love his responses. KP

22
Gauges - Levers and Cables / Gauge/Meter Restoration Hint
« on: November 24, 2022, 04:27:42 pm »
If you intend restoring an instrument and want to use the same case here's something I do to refinish the rear plastic ring. This helps retain the innards and give an unmolested look to your restored part. Essentially it is just the method I use to remove the black retaining section of the gauge for future attachment. Photos say it all

23
Member's Bikes / Re: Sandcast #173 back alive!
« on: July 26, 2022, 04:37:57 pm »
Notice anything different with your oil tank decal  ;)

24
Member's Bikes / Re: Sandcast #173 back alive!
« on: July 16, 2022, 03:21:36 am »
Man what a great machine I just love it. Whatever you do, don't sell, remove or trash anything from that low number gem. Unique parts will include the 19l tank, rear hub, swing arm, instruments, mirrors, switches, engine parts and on and on Very unique parts to these low numbered machines. Enjoy it while you have her  :)

25
General Discussion / Re: Sam's Anatomy of a CB750 Sandcast
« on: June 01, 2022, 01:51:06 am »
Private facebook group Here's a photo of the post and comments

26
General Discussion / Sam's Anatomy of a CB750 Sandcast
« on: May 28, 2022, 05:25:32 am »
Hey Sam. Your amazing photo has made it to the Z1 Historical Facebook site. How good is that. Amazing photo

27
New Member Introductions / Re: 1969 Sandcast
« on: May 23, 2022, 04:26:49 pm »
get your kids to do it

28
New Member Introductions / Re: 1969 Sandcast
« on: May 21, 2022, 05:37:53 pm »
when you reply below you will see attachments and other options

29
New Member Introductions / Re: 1969 Sandcast
« on: May 20, 2022, 02:37:53 pm »
You need to give us more details like engine and frame number Also some photos. You can PM me KP

30
Love em all Don

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