Author Topic: Getting my K0 back on the road  (Read 7809 times)

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Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #75 on: July 10, 2022, 06:13:50 PM »
Got my cases prepped and painted.

3 coats of duplicolor 1615 and 2 coats of 2k clear.

Bottom end is back together and pistons are all prepped and ready with ring gaps all set to .012”

Also got my starter apart, cleaned and ready for install once I clean up the wiring a bit on the outside.


Offline Stev-o

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Re: Getting my K0 back on the road
« Reply #76 on: July 11, 2022, 12:28:04 PM »
Nice job on the cases!

BTW - there is no such thing as "free shipping", you paid for it.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #77 on: July 11, 2022, 12:41:09 PM »
Nice job on the cases!

BTW - there is no such thing as "free shipping", you paid for it.

Of course your payin for it, one way or another.

What I was getting at was that I can get the same parts, cheaper and faster quite often from the other side of the planet than I can from 3 states away.

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #78 on: July 20, 2022, 07:34:19 PM »
Well I’ve got the barrels back on, the cam in and rockers on.

I ended up swapping out a few of the rockers that I didn’t think were up to snuff. They all seemed to polish up quite nicely.

The only thing I did run across was when putting my cages on, someone along the line drill and threaded inserts into most of the threads and they almost all backed out when I tried to tighten them down.

So it all came back apart and I redid the inserts.

The cam is all set and ready to be timed whenever I get some time next.

Hopefully get this motor back in the frame real soon.

Also started cleaning and polishing some motor bits.



Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #79 on: July 20, 2022, 07:37:25 PM »
I’d also like to thank everyone for helping me diagnose my motor and get me squared away.

I was just gonna put it back in the bike initially because it ran, but I’m glad I got it all apart and sorted out.

Really appreciate it the help!

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #80 on: July 22, 2022, 08:00:11 AM »
Get it all gapped and ready to get in the bike.

I think I may go with the hackaweek method.


Offline MauiK3

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Re: Getting my K0 back on the road
« Reply #81 on: July 22, 2022, 02:24:43 PM »
I don’t recall how he did it but I put the motor on it’s side and lowered the frame over it. Very easy. No drama.
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Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #82 on: July 22, 2022, 03:25:56 PM »
I don’t recall how he did it but I put the motor on it’s side and lowered the frame over it. Very easy. No drama.

Done that many times in the past, unfortunately my bike is already a complete roller just waiting for the motor to go in. Not gonna risk that haha.

I think I may go the way of hackaweek and shimmy it in.





On a side note, can anyone confirm that this washer goes on the the starter gear here??? Seems it may be a spacer on the back side??? The parts drawings show it on the outside like this and I can’t find any other references

Offline newday777

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Re: Getting my K0 back on the road
« Reply #83 on: July 22, 2022, 05:38:48 PM »
It's been a couple years since I had mine off but that does look familiar. I might get around to pull off the cover tomorrow on my engine I'm taking apart.
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #84 on: July 22, 2022, 07:47:26 PM »
Appreciate that.

As it sits it would be resting against the gear which first quite seem right but that’s how it’s shown in the parts drawings.

Offline PeWe

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Re: Getting my K0 back on the road
« Reply #85 on: July 22, 2022, 09:53:06 PM »
Yes, washer outside as yours.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #86 on: July 22, 2022, 11:59:13 PM »
Thank you PeWe!!!

Offline PeWe

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Re: Getting my K0 back on the road
« Reply #87 on: July 23, 2022, 12:55:36 AM »
Proof, still running.  ;)
When I changed alternator cover.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline newday777

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Re: Getting my K0 back on the road
« Reply #88 on: July 23, 2022, 01:28:21 AM »
Proof, still running.  ;)
When I changed alternator cover.
I had looked through my pictures but hadn't found any of that area from 2 years ago. 

Per, what is that big black connector w/3 yellow stripes?
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline PeWe

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Re: Getting my K0 back on the road
« Reply #89 on: July 23, 2022, 06:41:29 AM »
Probably the harness that connect to alternator windings.  3 yellow + field coil.
That harness rather new from Yamiya.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #90 on: July 26, 2022, 03:40:23 PM »
Well I got the motor in the bike.

Went full hillbilly but it was pretty easy. No damage to the frame or motor so that was a plus.

Also finished the last bit of painting I had to do. I couldn’t find a 3 hole air box that was painted so I figured I’d just do that myself. A bit of a pain getting the amount of green/blue correct but I eventually got there. It was just a process of spraying and checking color, adjusting, checking inside and outside.

I think it should fly.

Offline HondaMan

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Re: Getting my K0 back on the road
« Reply #91 on: July 29, 2022, 07:11:13 PM »
SWEET paint job!
I've always wanted mine in that color, never been able toget it there.

You have the starter-gear washer in the correct way: it goes on the outside of the starter gear.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

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Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
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Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

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Link to website: www.SOHC4shop.com

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #92 on: August 02, 2022, 07:01:52 PM »
Thank you Hondaman!!!


- well I’m stuck haha

I am trying to fit my air box and there is no way it’s gonna fit.

When I got the bike it had a K1 air box so I’m guessing my carb to head boots may be for a k1 which I’m pretty sure is my problem.

From what I can gather, the K0 had a different boot at the head, although I can’t confirm what the difference is.

Can anyone confirm that that may be my problem.

Or any anyone give me a solid advise on how I need to go about getting my early airbox to fit with later carbs.

I would also imagine my rubber velocity stacks in the air box are from a K1 as well.
« Last Edit: August 02, 2022, 07:03:35 PM by WideAWAKE »

Offline PeWe

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Re: Getting my K0 back on the road
« Reply #93 on: August 02, 2022, 11:00:48 PM »
K0 carb boots are shorter to the head spigot that must be shorter on K0 head than the later.

I got wrong boots in the 80's when ordering new for my K6, got the earlier for K0.  Found as wrong over 20 years later, too late to complain ;)
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #94 on: August 03, 2022, 06:06:31 AM »
I got a set of k0 boots on order.

There must be something different about the alignment of the airbox as well.

These carbs and boots were on this bike when I got it. It just had a later airbox.

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #95 on: August 03, 2022, 02:29:00 PM »
I was able to get it sorted.

I didn’t think I would be able to adjust the angle of the boots and still get the carbs on but I was able to.

No idea how to tell if my current boots are K0 or later. Well I know the sticker is shorter, so I’m assuming that side is different, just don’t know any measurements.

Offline PeWe

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Re: Getting my K0 back on the road
« Reply #96 on: August 03, 2022, 09:30:13 PM »
The angle of the boots sticking in the airbox is the thing.
I wrestled with the airbox on my K2 a few years ago. I found a few threads on this forum with photos. The airbox ears had to match frame.

I have my K0 inlet boots and newer.
Here my old K0 rubbers I got 1988 vs later.

« Last Edit: August 12, 2022, 11:02:57 PM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #97 on: August 03, 2022, 10:38:54 PM »
Thank you for those pics PeWe.

I can confirm my boots are later style. Getting it all in there was a tight squeeze.

I still have some K0 boots on the way so when they get here I’ll swap em out.

I think it all may fit a bit better that way.

Offline WideAWAKE

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Re: Getting my K0 back on the road
« Reply #98 on: August 12, 2022, 06:46:18 PM »
Well she fired right up!

Has a slight hang when coming back to idle. I have yet to vacuum synch the carbs so I’m guessing that should solve the issue.

I’ve never heard one of these in person, I seem to have a very faint “crinkle” noise. I set the valves but have yet to double check em after I fired it up but it also doesn’t sound like tappets. Also have not confirmed the timing is correct, just put it back to where it come off when I got it.

I will get to all those things next week but yeah. First start she seems pretty healthy.

Can anyone check this video and see if it sounds right??

https://youtube.com/shorts/cNfO4XJAH9M?feature=share

I tried to embed it but it said it wasn’t a valid link???

Offline seanbarney41

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Re: Getting my K0 back on the road
« Reply #99 on: August 12, 2022, 10:57:05 PM »
Sounds fantastic!  Yup, that is what these sound like.
If it works good, it looks good...