Author Topic: CB350f (466 big bore) - she runs!  (Read 7314 times)

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
  • SOHC Jedi
  • Posts: 5503
    • View Profile
Re: CB350f (400) - big bore time
« Reply #75 on: November 24, 2019, 03:51:32 PM »
I keep my fingers crossed you have no leaks. That area is quite oil free really, its just the area around the oil return paths / dowels / studs, that usually leak if anything. I can see this bike being back on the road by Christmas, you are making great progress 😊😊😊
« Last Edit: November 24, 2019, 03:53:09 PM by Nurse Julie »
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #76 on: November 24, 2019, 06:14:30 PM »
That may be possible, but once the engine is back together, I also have some wishes with the exhaust. I currently have a 4-2 based on the original header pipes of the 350f. I have the ambition to make it 4-4 again with 4 open peashooters.
CB350f with 466f engine - CB350f project

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
  • SOHC Jedi
  • Posts: 5503
    • View Profile
Re: CB350f (400) - big bore time
« Reply #77 on: November 24, 2019, 06:17:31 PM »
That may be possible, but once the engine is back together, I also have some wishes with the exhaust. I currently have a 4-2 based on the original header pipes of the 350f. I have the ambition to make it 4-4 again with 4 open peashooters.
Haha, I love pea shooters, I have had them on many of my old British bikes and they sound great.
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #78 on: November 29, 2019, 09:17:08 PM »
Got the head back on.
And to show I do occasionally take advice (...), a pic of the boots with brand new original JIS screws instead of the fancy brass ones.

BTW, head nuts tightened to 22Nm, with the 10 copper washers and yes, I even ordered the 2 special washers with rubber inserts at 6,50 euro a piece. That hurt a bit...
CB350f with 466f engine - CB350f project

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
  • SOHC Jedi
  • Posts: 5503
    • View Profile
Re: CB350f (400) - big bore time
« Reply #79 on: November 30, 2019, 04:23:35 PM »
Got the head back on.
And to show I do occasionally take advice (...), a pic of the boots with brand new original JIS screws instead of the fancy brass ones.

They look a lot better 👍👍👍👍
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #80 on: November 30, 2019, 09:32:21 PM »
Starting to look like an engine again.

Valvecover installed, so the valves are opening and closing again. I still get a bit anxious when setting cam shaft timing. I must have checked a dozen times and still turned the crank to a position that no piston was at tdc when the cover went on.

Also renewed the seal of the tacho drive as well, and obviously all O-rings.

Feels very smooth when turning with the kickstart by hand.
CB350f with 466f engine - CB350f project

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #81 on: December 02, 2019, 08:53:14 PM »
Engine all buttoned up. Got a nice boop-boop-boop-boop on the kickstart showing signs of compression (there's no exhaust yet) and needs a good amount (not too much, not too little) of force on the kick starter.
Dared to push the starter button and that sounded very normal.

Next, exhaust, throttle cables, clutch, and some small other stuff.

Tbc
CB350f with 466f engine - CB350f project

Offline Nurse Julie

  • 1973 CB750 UK K2.1977 CB550/4 Mongrel Brat. 1978 CB400/4.
  • SOHC Jedi
  • Posts: 5503
    • View Profile
Re: CB350f (400) - big bore time
« Reply #82 on: December 02, 2019, 09:05:38 PM »
What a lovely sound...... Boop, Boop, Boop... Its very encouraging 👍👍👍
Im a Nurse, trust me, this won't hurt.....much !!!

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #83 on: December 10, 2019, 09:44:00 PM »
Still waiting for new exhaust studs, so decided to refurbish the rear wheel with new bearings and seals, and changed the tyre from 4,10-18 to 4,00-18. Gives a fuller look and matches better with the front 3,50-18.
Rim will need some paint touch up, which I will do in spring with warmer temperatures.

And planning for the 4-4 exhaust.
CB350f with 466f engine - CB350f project

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #84 on: December 14, 2019, 09:27:28 AM »
Yeahhh, one side finished. Let’s see how long these sewage pipes hold  ;D

So, I’m using the original header pipes of my 350 4-4, and the original damper hangers, to get the nice tapered look.
The honda pipes are 32mm outside diameter. The idea is to fabricate these pvc mock-ups out of 35-1,5 mm heater pipe (a size relatively easily available), which will be an exact fit to clamp on the headers.
At the silencer side, I will need to make some sort of widening ring, to bump the diameter up to 40 mm or more, so the “silencer” can clamp down.
CB350f with 466f engine - CB350f project

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #85 on: December 18, 2019, 09:22:30 PM »
Cylinder 2 link pipe is made. Just needs detailing with a flappy disk and some finer sanding paper, followed by a finishing layer.
It's my first time welding an exhaust pipe, and it went better than expected. Used MIG. A cheap machine.
First try needed quite a few corrections, but on the second weld I already got the hang of it a bit.

Now, how to finish the pipe. I'm thinking heat resistant paint, but which color..? The silencers are chrome. The header pipes are tired original chrome-ish...
CB350f with 466f engine - CB350f project

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #86 on: December 19, 2019, 10:00:27 PM »
Cylinder 1&2 done. Now what to with the finish?
Heat resistant paint? But what color?
CB350f with 466f engine - CB350f project

Offline taysidedragon

  • SOHC Pro
  • Posts: 528
    • View Profile
Re: CB350f (400) - big bore time
« Reply #87 on: December 20, 2019, 02:00:51 PM »
Cylinder 1&2 done. Now what to with the finish?
Heat resistant paint? But what color?

If it was me I would get them chromed to fit in with the headers and silencers.
If you don't want to do that it would have to be silver exhaust paint, black would look odd sandwiched between the chrome sections. Please don't wrap them with silencer bandage! One of my pet hates. 😣
Gareth

2010 Street TripleR
1977 CB400F

Offline Erwin83

  • SOHC Member
  • Posts: 169
    • View Profile
Re: CB350f (400) - big bore time
« Reply #88 on: December 20, 2019, 02:19:24 PM »
Cylinder 1&2 done. Now what to with the finish?
Heat resistant paint? But what color?

If it was me I would get them chromed to fit in with the headers and silencers.
If you don't want to do that it would have to be silver exhaust paint, black would look odd sandwiched between the chrome sections. Please don't wrap them with silencer bandage! One of my pet hates. 😣

I agree on the bandage  ;)
The headers aren't really in very good condition. What if I painted them too? Black / Silver...?
CB350f with 466f engine - CB350f project

Offline SteveD CB500K0

  • Administrator
  • SOHC Jedi
  • Posts: 3791
  • Ride on the Steel Breeze...
    • View Profile
    • Steve's Blog
Re: CB350f (400) - big bore time
« Reply #89 on: December 20, 2019, 03:47:46 PM »
I always thought black exhausts were cool. In the 70s that’s what all the race bikes used (think RCB)


Sent from my iPhone using Tapatalk
2020 Tiger 900 GT Pro
1971 CB500K0
2003 Speed Triple 955 (borrowed)

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal