Honda CB750 Sandcast Forum
February 22, 2018, 07:53:55 AM *
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1  General Category / General Discussion / Re: Can't resist..... Blame it on Ash. on: February 02, 2018, 08:08:14 AM
You should buy that Uli Grin

i donīt dare.
No idea, where I could find any spare part for those.

And just bought myself an other old fashened bike.
2  General Category / General Discussion / Re: Can't resist..... Blame it on Ash. on: February 02, 2018, 02:27:53 AM
Never seen or heared about that. But thats a cool bike. Congrats!


There is a constellation offered in Germany.  I have no idea about these bike

https://suchen.mobile.de/fahrzeuge/details.html?id=237528765&damageUnrepaired=NO_DAMAGE_UNREPAIRED&isSearchRequest=true&makeModelVariant1.makeId=21750&maxFirstRegistrationDate=1975-12-31&pageNumber=1&scopeId=MB&searchId=a6b2a806-23fe-833a-1802-7b8a2ed3142e
3  General Category / Links to Auctions and Classifieds / Re: FRAME 31 on: January 28, 2018, 06:31:53 AM
Until which VIN were those pint covers used?
4  General Category / Member's Bikes / Re: Our 2nd Sandcast - 2469 Miles on it - Frame 703 Engine 638 on: January 18, 2018, 06:39:48 AM
Thanks for additional pics.
Alternator cover is not sandcast part but from a later model.
5  General Category / Member's Bikes / Re: Our 2nd Sandcast - 2469 Miles on it - Frame 703 Engine 638 on: January 13, 2018, 11:41:46 AM
Incredible find. Would like to see more pics too.

I bet another sandcast with not-painted engine.
6  The Restoration Shop / Fuel (gas - petrol) Tanks, Side Covers and Air Box / Air cleaner on: December 31, 2017, 09:01:09 AM
Which air cleaner element would best match to sandcast air filter box.

Is this one correct:

https://www.ebay.de/itm/Honda-CB-750-Four-K0-K1-K2-K6-Luftfilter-Original/322248487093?epid=642240825&hash=item4b0781b0b5:g:9joAAOSw9IpXyIhu

7  General Category / General Discussion / Re: SEASONS GREETINGS on: December 25, 2017, 12:45:26 PM
All the best for you all and thank you for any help in that forum!
8  General Category / General Discussion / Re: My CR750 replica on: December 18, 2017, 06:16:57 AM
Great stuff!
If we donīt comment, we are just speechless.
9  General Category / Published Material / Re: SB's in one document ... at last ! on: November 24, 2017, 08:40:57 AM


in the case of the oil filter case fitted to vins 1-7414, i believe we "know" there were two types fitted; 1.  fin-less or "round" and 2. finned.  From there, things become questionable.  That's where looking at every piece of evidence we can find, as we draw conclusions, become absolutely necessary.  And, we have to be prepared to accept, that a conclusion we arrive at today, may be subject to more previously unknown (new) information we discover tomorrow.  The "French Sandcasts" are a prime example.  If i had declared in 2004 when this website went online that the factory produced sandcast motorcycles in the vin range of 14,000-17,000, chances are i would have been vigorously challenged and told i was wrong.



Hello Steve,

I think there were three oil filter cases:

- the round finless, I call it No. 0
- with fins outside but without ribs inside, I call it No. 1
- with fins outside and "8 ribs ribs inside" with a number 2 outside, I call it No. 2


SB13 replaces No. 1 with No.2, and refers to frames 1783 - 9554, and taking into accound what Hondasan wrote, it is my personal conclusion that the round filter case  No. 0 was replaced by the No.1 version by HONDA directly beginning with # 1783.

I say directly by Honda  because I dont know a SB that asked dealers to replace No. 0 by No.1

Moreover, my sandcast # 1983 came exactly with that No.1 case (pic attached).

In fact, I am not happy with that conclution as I would have to replace the round case (That I finally found) with that No. 1 case again.

Especially as that round case is such an unique, famous and ovious sandcast item.



10  The Restoration Shop / Brakes / Re: Master front brake cylinder with a window for the level... on: November 22, 2017, 01:29:17 AM
That would explain this being a very French speciality.

On the other hand: did HONDA really made a special master cylinder just for a relatively small amount of bikes?

11  The Restoration Shop / Brakes / Re: Master front brake cylinder with a window for the level... on: November 21, 2017, 12:49:46 PM
Looking at the kill switch and the rubber hood on the brake line that’s not even a very early bike. Amazing.
Is this master cylinder a French special?
12  General Category / Published Material / Re: SB's in one document ... at last ! on: November 19, 2017, 05:45:27 AM
Uli,
The oil bowl bulletin (#13) refers to the replacement of the first version finned bowl, which was not ribbed inside and so cracked around the centre boss if the bolt was over-tightened, with the second type finned bowl which had strengthening ribs around the inner boss. The reason the replacement did not apply to engine numbers from 1 to 1782 is presumably because these were factory fitted with the round oil bowl which did not suffer cracking problems.
Just my interpretation of the available info.

Chris R.

Consequently, fin less round bowl would have ended with # 1782.

But distiction list says

28. round, fin-less, non-webbed oil filter cover, E1-E4148
13  The Restoration Shop / Brakes / Re: Master front brake cylinder with a window for the level... on: November 19, 2017, 05:38:13 AM
Never seen that or heared about that. Cool finding,thanks.
14  General Category / Published Material / Re: SB's in one document ... at last ! on: November 17, 2017, 02:22:56 AM
Uli,
The oil bowl bulletin (#13) refers to the replacement of the first version finned bowl, which was not ribbed inside and so cracked around the centre boss if the bolt was over-tightened, with the second type finned bowl which had strengthening ribs around the inner boss. The reason the replacement did not apply to engine numbers from 1 to 1782 is presumably because these were factory fitted with the round oil bowl which did not suffer cracking problems.
Just my interpretation of the available info.

Chris R.

Thanks, you are right. "2" is the finned version with ribs inside.

So the version without fins outside (round case) had not been replaced by SB?

15  General Category / Published Material / Re: SB's in one document ... at last ! on: November 16, 2017, 02:18:13 AM
Hi Ash, thanks.


Regarding bulletin # 13, oil filter case:

why was application only from 1001783 onwards, and not for all bikes starting  # 1 ?

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