Author Topic: New to the forum New to the SOHC/4's  (Read 1874 times)

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Offline keaton_taylor

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New to the forum New to the SOHC/4's
« on: September 16, 2011, 11:51:35 PM »
Hows it going folks, I'm a proud new owner of a 1978 CB750K. HEr name is Stellam I'll be keeping her as original as possible and using her as a daily driver. She'll be a fall time transport and a winter time project. I'm working on her a bit now synching the carbs, adjustung the valves etc. I bought 2 Clymer's manuals and have been lurking the site all week. Any useful links or information or encouragement anyone can offer is much appreciated!
Insert silly conservative political message here.

1978 Honda CB750K

pat english

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Re: New to the forum New to the SOHC/4's
« Reply #1 on: September 17, 2011, 02:27:41 AM »
"cut it up"...jk...welcome to the site..

KingCustomCycles.com

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Re: New to the forum New to the SOHC/4's
« Reply #2 on: September 17, 2011, 02:46:08 AM »
Welcome, anything you need we are open 24/7.  As much of a pain as it is, fork seals and oil will improve most bikes dramatically and seems to be the most neglected.

mrjack55

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Re: New to the forum New to the SOHC/4's
« Reply #3 on: September 17, 2011, 05:56:53 AM »
Welcome to the mad house.  You'll find all the info you need in here, and some very colorful characters to boot.
Good luck with your new K8 750.  Original as possible eh?  We'll see how long that lasts.  ;) 
I think I said the same thing once...once.  ;D

Offline MoMo

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Re: New to the forum New to the SOHC/4's
« Reply #4 on: September 17, 2011, 06:14:52 AM »
Welcome, anything you need we are open 24/7.  As much of a pain as it is, fork seals and oil will improve most bikes dramatically and seems to be the most neglected.

Agree with that, and if the bike has been sitting for 5 years or more, the tires will provide a very harsh ride. Even though the tires may look good new ones would be in order..

Welcome to the forum...Larry

Offline keaton_taylor

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Re: New to the forum New to the SOHC/4's
« Reply #5 on: September 17, 2011, 06:41:14 AM »
Thanks Guys!

It's been super chilly here so I've been more or less unable to do much to her. the guy who owned her rode her a bunch for a long time and then parked her. before i bought her he did some maintenance work and there, and in general kept pretty good care of her until his wife couldn't stand three bikes in the garage. My first orders of business are as follows (let me know if there is an order I should be thinking in)

change oil and filter
change spark plugs and potentially wires
sync carbs
set valve clearance/cam chain

and now fork seals apparently!

Thoughts or suggestions?

btw, here she is.


Insert silly conservative political message here.

1978 Honda CB750K

Offline Tews19

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Re: New to the forum New to the SOHC/4's
« Reply #6 on: September 17, 2011, 07:28:38 AM »
Nice bike and welcome. Start off with the 3k tune up... http://www.sohc4.net/?page_id=2011
This link will assist you with the tune up and many other questions in the future
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Stev-o

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Re: New to the forum New to the SOHC/4's
« Reply #7 on: September 17, 2011, 10:40:43 AM »
First off, welcome!

+1 on giving it a full "3000 mile tuneup". Then you will know exactly where you are at. If you have stock plug wires, they are attached to the coils and cannot be changed, and most likely won't need replacement. A good suggestion is to replace the plug caps, about $2 from your local Honda dealer (or check 'em with an ohmmeter)  And clip off a quarter inch of plug wire when you o ti ensure a good connection.

Have fun!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline BobbyR

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Re: New to the forum New to the SOHC/4's
« Reply #8 on: September 17, 2011, 10:59:22 AM »
Welcome, I too own a 78K and we are truly blessed. We are also stepchildren since people love their funny looking early models. Now that I have pissed off a lot of my friends. That is a good looking bike and with some elbow grease and various polishes it can be be sweet.

The 77-78 have accelerator pumps to help eliminate the lag you get when you open the throttle quickly. The pump holds a tiny amount of gas and if it is laid up for a period of time the gas spoils and the pump stops working. You can check it easily by looking in the carb throat and twisting the throttle, you should see some gas spray up. If it doesn't it needs to be cleaned out. Other that that the advice you have gotten up to now is valid. The 77-78 have this one different feature.
« Last Edit: September 17, 2011, 05:11:47 PM by BobbyR »
Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline CycleRanger

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Re: New to the forum New to the SOHC/4's
« Reply #9 on: September 17, 2011, 03:42:21 PM »
I'll be keeping her as original as possible

Excellent choice!  :D

Howdy!

I would suggest that you get the shop manual and Common Service manual here:
 http://www.honda4fun.com/man_officina/man_officina.html

And get the Parts List here: http://www.honda4fun.com/spaccati/spaccati.html
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 ekpent

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Re: New to the forum New to the SOHC/4's
« Reply #10 on: September 17, 2011, 04:41:38 PM »
As for the fork seals and oil you do not need to change the seals unless there is a visible leaking or weeping of oil on the tube sliders.Oil should be changed and is easy.One thing to look for when draining the oil is the presence of water,it will usually come out first or the oil can be contaminated with it and look like a grayish sludge. That would indicate also a bad set of fork seals.

Offline Danno

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Re: New to the forum New to the SOHC/4's
« Reply #11 on: September 17, 2011, 05:10:35 PM »
that bike looks too nice to need fork seals yet
welcome to the forum
« Last Edit: September 18, 2011, 07:39:24 PM by Danno »
when you own a motorcycle the wife does not have to find you handy she just has to find you

Offline slowjo

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Re: New to the forum New to the SOHC/4's
« Reply #12 on: September 17, 2011, 05:23:15 PM »
Just a little tip. Don't get carried away. Take it one step at a time. These old bikes are addictive.

KingCustomCycles.com

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Re: New to the forum New to the SOHC/4's
« Reply #13 on: September 17, 2011, 05:56:22 PM »
I would agree with not changing the fork seals if no leaks were evident except for one exception..............sometimes, there is no oil to leak.  I'm just sayin'  :-) 

Offline Tews19

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Re: New to the forum New to the SOHC/4's
« Reply #14 on: September 18, 2011, 08:39:03 AM »
Just a little tip. Don't get carried away. Take it one step at a time. These old bikes are addictive.

+1, I caught the disease this past summer......
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Danno

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Re: New to the forum New to the SOHC/4's
« Reply #15 on: September 18, 2011, 07:42:06 PM »
what king says is correct check and change the fork oil to know for sure about the seals I had a 76 that was bone dry and thankfully did not leak after it was full never did figure out why may have weaped out and when the seals hardened up from being dry did not leak anymore but at leask check
when you own a motorcycle the wife does not have to find you handy she just has to find you

Offline boatsdickson

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Re: New to the forum New to the SOHC/4's
« Reply #16 on: September 19, 2011, 02:45:07 AM »
Welcome to the asylum keaton, straight jackets and medications are optional. Ill keep an eye out for ya when i ride. Maybe we'll cross paths. Hope yu survived the storm ok.....boats  8)
"No. We're all our own prisons, we are each all our own wardens and we do our own time. I can't judge anyone else. What other people do is not really my affair unless they approach me with it. Prison's in your mind. Can't you see I'm free"?  Testimonial of Charles Manson