Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: El__burro on May 08, 2014, 09:55:43 PM

Title: Top yoke replacement
Post by: El__burro on May 08, 2014, 09:55:43 PM
I am just looking at my new project (CB750 K2) and putting together a parts wish list.
I'll need some valve caps (the bolts that cover the valve)
I need also a top yoke, mine has a crack at the tightening bolt.
for sure I don't want to buy a similar one (with the rhino horn).
What other models do adapt to this model (even not Honda).

Thanks
El__burro
Title: Re: Top yoke replacement
Post by: MarkCR750 on May 08, 2014, 11:04:42 PM
EB, David Silver sells tappet caps and Honda CBX1000 Yokes are a straight swap, cheers Mark.

https://www.davidsilverspares.co.uk/CB750K2-FOUR-1972/part_105133/
Title: Re: Top yoke replacement
Post by: El__burro on May 11, 2014, 10:26:11 AM
Thanks Mark.
I am actually bidding on a 1978 CB750 F2 yoke,
will that fit?

Thanks
El__burro
Title: Re: Top yoke replacement
Post by: MarkCR750 on May 11, 2014, 10:35:08 AM
I don't know EB , hopefully someone else on the forum will.
Title: Re: Top yoke replacement
Post by: El__burro on May 15, 2014, 10:25:24 PM
I'll let you know soon.
I paid £16 (incl P&P)
It's worth giving it a go.

Thanks
El__burro
Title: Re: Top yoke replacement
Post by: Bryanj on May 16, 2014, 05:57:20 AM
I thought that the F2 had bigger diameter fork tubes
Title: Re: Top yoke replacement
Post by: UK Pete on May 16, 2014, 06:55:40 AM
I thought that the F2 had bigger diameter fork tubes

They are 35mm so should be the same dim
pete
Title: Re: Top yoke replacement
Post by: El__burro on October 24, 2014, 05:19:02 PM
EB, David Silver sells tappet caps and Honda CBX1000 Yokes are a straight swap, cheers Mark.

https://www.davidsilverspares.co.uk/CB750K2-FOUR-1972/part_105133/
Mark, is it just cbx1000 or also 750/500 models.

Thanks
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on October 24, 2014, 07:58:37 PM
If you have the k2 clocks they will not fit on to nothing else except the rhino yoke hope you have considered this
Cheers
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on October 24, 2014, 08:02:27 PM
My intention is to "shave off" the raisers as I have clip ons and the speedo mounted on the headlight.
The cbx one will be great as it will save me the shaving bit.
Regards
Title: Re: Top yoke replacement
Post by: El__burro on February 10, 2015, 02:39:47 PM
EB, David Silver sells tappet caps and Honda CBX1000 Yokes are a straight swap, cheers Mark.

https://www.davidsilverspares.co.uk/CB750K2-FOUR-1972/part_105133/
Mark, I bought a Honda Cbx1000 top yoke. It's not a straight swap.  Cbx  seems to have wider forks..

"thanks"
El__burro
Title: Re: Top yoke replacement
Post by: AshimotoK0 on February 10, 2015, 03:44:39 PM
I've got a CB750K7 top yoke ...don't know if it will fit.

Ash
Title: Re: Top yoke replacement
Post by: El__burro on February 10, 2015, 06:17:36 PM
Ash, i guess the k7 looks like the one i have already.
Unfortunately its not great for my purpose as i cannot shave the raisers off.
It would leave 2 huge holes.

Still the CBX one is perfect apart from the fork diameter variances.
Cb750 F2 (and k2) is 35mm
CBX 1000 IS 39mm
(http://tapatalk.imageshack.com/v2/15/02/10/eddfa748ca59f9234b7276fd748d4f72.jpg)(http://tapatalk.imageshack.com/v2/15/02/10/9bffff0a1966fb84515302c18893e909.jpg)
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on February 10, 2015, 06:51:43 PM
Hi
I have a spare top yoke.Do not know whats its off but does fit the 750 with no problem think its 500 but not sure
If interested will post photo in the morning
Cheers
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on February 10, 2015, 06:54:11 PM
Let's see it. Thanks to both of you.
I have just realised that also the CBX1000 one is 1 cm wider.
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on February 10, 2015, 07:20:05 PM
Burro
Did it tonight want to lay in in the morning
Cheers
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on February 11, 2015, 09:41:56 AM
I guess the CBX (not sure what cc) 1978-1979 has the 35mm forks, for the model after that it's 39mm.
Title: Re: Top yoke replacement
Post by: El__burro on February 26, 2015, 09:35:32 AM
Top yoke all shaved. 
Also I am working on the side panel.

Does the battery tray needs to go in before the oil tank?


(http://tapatalk.imageshack.com/v2/15/02/26/a0f86e9c524d0dca18808ec3bd266582.jpg)
(http://tapatalk.imageshack.com/v2/15/02/26/4f8e0945382dc56ae931ff5d7ac1fbd0.jpg)
Thanks
El__burro

Title: Re: Top yoke replacement
Post by: El__burro on March 02, 2015, 02:49:18 PM
Another issue.
The k7 top yoke I have nicely shaved doesn't fit.
The hole at the back is 1cm too forward.

(http://tapatalk.imageshack.com/v2/15/03/02/f9e4e293486288f6edc59868e87d5057.jpg)(http://tapatalk.imageshack.com/v2/15/03/02/b284dd70d520b9f45a3ee6b48f19e025.jpg)
Not sure what to do next.
It's a shame after so much effort.

Any idea?
El__burro
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on March 02, 2015, 07:15:28 PM
The old broken one does not look like a k7 as it does not have the bulbs for the ignition switch screws as the other does
Cheers
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on March 02, 2015, 07:17:49 PM
Exactly, the bike is a k2, the damaged yoke is the original one with the rhino horn.
The other is a K7. There is a 1cm difference between them.
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on March 02, 2015, 07:19:46 PM
Looks like you will have to find a k3 4 5 or 6 to fit it
Best of luck
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on March 02, 2015, 07:21:20 PM
Thanks. I am.
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on March 02, 2015, 07:22:42 PM
Did offer you one b4 but you declined Trig has bought it ask him
Cheers
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on March 02, 2015, 07:32:52 PM
Bitsa, the one in the photo you send me are the same I have. It's just been shaved off.
That's why I am confused.
Title: Re: Top yoke replacement
Post by: philward on March 02, 2015, 08:03:37 PM
Hi
I have a spare k3/k4/K5 type - it will fit K2 as I have one on my K2 while I refurb rhino horn top yoke/clocks. I'm after
a K2 rev counter that's ok to refurb - the type that fits the rhino horn with the chrome clamps if you have one to swop.
If anyone has one to sell/swop, let me know please.
Phil
Title: Re: Top yoke replacement
Post by: El__burro on March 02, 2015, 08:21:02 PM
Phil, thanks for the offer,  unfortunately I don't have a rev counter but just the speedo below,  seems to be complete.
Let me know if you are interested via PM.
Thanks
El__burro
(http://tapatalk.imageshack.com/v2/15/03/02/5d7c59be6bb88b9d8147d4e67957edda.jpg)(http://tapatalk.imageshack.com/v2/15/03/02/926354c81d1f083e6e6015ee6fb28fd8.jpg)
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on March 02, 2015, 09:02:47 PM
Burro
The one I had did not have anything shaved I even tried it on my k2 with no problem
Cheers
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on March 02, 2015, 09:07:42 PM
Bitsa,  you are completely right and I am a complete idiot.
I thought it was as "good" as the one I had.
Tried to contact Trigger but nothing yet.
Title: Re: Top yoke replacement
Post by: philward on March 02, 2015, 10:22:36 PM
Burro
Thanks but I have the speedo but no rev counter. If you don't get sorted from Trigger, let me know if you want the top yoke
Phil
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on March 03, 2015, 10:02:18 AM
Burro
Think Trig is out and about again.
Cheers
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on March 08, 2015, 12:01:15 PM
Is the yoke you sold trigger good for Ä·2. Thanks
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on March 08, 2015, 01:37:01 PM
All I can say it fitted and cant remember why I changed it.Trig thinks its a 550 or so ask him
Cheers
Bitsa
Title: Re: Top yoke replacement
Post by: El__burro on March 08, 2015, 03:00:44 PM
He told me the same.
Never mind, I have missed a good one on ebay too.
Title: Re: Top yoke replacement
Post by: Bitsa (Ralph Wright - RIP) on March 08, 2015, 03:07:42 PM
If you dont find one by the 21st let me know am going to a weekend fair will keep my eyes out for you
Cheers
Bitsa