« previous next »
Pages: [1]   Go Down

Author Topic: casting date deciphering Q?  (Read 855 times)

0 Members and 1 Guest are viewing this topic.

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,936
  • Saver of unloved motorcycles.
casting date deciphering Q?
« on: July 12, 2017, 03:25:44 PM »
 I have access to a couple unstamped 1970 engine cases. is there a guide to deciphering the casting codes in the hexagonal recesses on the top engine case? I see III 0 3 10 on one and II 9 0 12 in the 4 hex holes.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,058
Re: casting date deciphering Q?
« Reply #1 on: July 12, 2017, 05:09:15 PM »
Don't know that, but compare them Carefully to existing cases.
I think on KO cases there is a difference in the gusset under where oil gauge mounts, compared say to A 73.
Logged
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,936
  • Saver of unloved motorcycles.
Re: casting date deciphering Q?
« Reply #2 on: July 12, 2017, 07:34:57 PM »
 I was sure I read a thread on this but google let me down this time.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline CycleRanger

  • No comment about being an
  • Really Old Timer ...
  • *******
  • Posts: 5,438
  • Central Texas Shop Manual Advocate
Re: casting date deciphering Q?
« Reply #3 on: July 12, 2017, 08:44:19 PM »
The only time I've seen any casting codes mentioned was in relation to different heads.
Logged
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,936
  • Saver of unloved motorcycles.
Re: casting date deciphering Q?
« Reply #4 on: July 12, 2017, 09:37:09 PM »
 They both had the early flywheel and no centerbolt in the front of the heads that were on them. At least one was under a sandcast top end but I was curious about the build date. The sandcast cases have the numbers in the top of the casting, I don't know what they mean either.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Ridem32

  • Hot Shot
  • ***
  • Posts: 292
Re: casting date deciphering Q?
« Reply #5 on: July 12, 2017, 11:48:31 PM »
Pics?


Sent from my iPhone using Tapatalk
Logged

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,936
  • Saver of unloved motorcycles.
Re: casting date deciphering Q?
« Reply #6 on: July 13, 2017, 10:23:10 AM »
Pics were easy before photobucket scammed us. Now us old guys need to learn new tech. to post them.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline slikwilli420

  • Master of Disaster
  • Master
  • *****
  • Posts: 2,362
Re: casting date deciphering Q?
« Reply #7 on: July 13, 2017, 10:44:37 AM »
Google photos. Easy to use and unlimited storage. You can also post direct links just like Photobucket, but it takes a couple more clicks.
Logged
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,936
  • Saver of unloved motorcycles.
Re: casting date deciphering Q?
« Reply #8 on: July 17, 2017, 08:02:42 PM »
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 19,936
  • Saver of unloved motorcycles.
Re: casting date deciphering Q?
« Reply #9 on: July 17, 2017, 08:04:30 PM »
Sorry for the links, I'm still working on the google photo deal.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,329
  • Central Texas
Re: casting date deciphering Q?
« Reply #10 on: July 17, 2017, 08:41:39 PM »
Flickr.com is real simple, Don....


Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........
Pages: [1]   Go Up
« previous next »