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Messages - GregShiv

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31
CB350/400 / Re: 400 Four strip down.
« on: December 06, 2017, 10:38:12 PM »
That barrel has a few broken fins that will need repair. Sure sign that the heads been screwdriver prised off at some point.

I think I have counted 3 fins that are broken.

What is the best way to get them repaired, TIG build up?

32
CB350/400 / Re: 400 Four strip down.
« on: December 06, 2017, 10:36:36 PM »
The clutch cover repair is pretty ugly. If you grind it down smooth you might open up a hole or crack underneath and need another weld to repair. What's the inside of the cover like?

The picture of the other side of the cover is included.
Look just as bad but there looks to be plenty of metal on both side to get an improvement?

33
CB350/400 / Re: 400 Four strip down.
« on: December 03, 2017, 10:27:10 PM »
I also found repaired damage to the clutch cover, a bit of aggressive polishing might see this improve?

34
CB350/400 / Re: 400 Four strip down.
« on: December 03, 2017, 10:17:51 PM »
A few more pictures, I did find a lot of blue gasket material hanging off inside the head area. But there was loads of oil so it does not appear to have been caused by oil starvation.
Do you think it is serviceable?
The cam journals feel smooth but I don't think the head surface looks too good with the scoring.

35
CB350/400 / Re: 400 Four strip down.
« on: December 03, 2017, 10:11:36 PM »
Progress so far.
Cleaned up the frame and it was a scratch in the dirt. The rust hole looks like it was caused by water build up as the side that has rusted has a space at the top that has allowed water to get in and not drain out.
I will be getting every black painted metal bit powder coated, all the bits are in a crate waiting to get done.
The bike has tapered roller bearings fitted to the yokes but they look pitted so will replace them.
Have been stripping the engine down and I have a few concerns around the cam and bearing journals in the head and rocker cover.
There was plenty of clean oil in the engine and no signs of anything suspicious in the filter or strainer except for a missing spring and the rubber seal around the strainer having perished.

36
CB350/400 / Re: 400 Four strip down.
« on: November 19, 2017, 08:13:32 PM »
Yes I noticed that as well, I will be giving it a cleanup and have a proper look.

Thanks.

37
CB350/400 / 400 Four strip down.
« on: November 19, 2017, 07:42:00 PM »
Hi,

I am in the process of stripping down my newly bought eBay 400 Four.

It is now in bits and I will soon be getting the frame, swing arm and various bracketry blasted and powder coated.

One exhaust stud is refusing to come out and one of the fork "pipe compression seat" bolts is refusing to budge even with a cordless impact driver.

The engine is a runner after I got power to the coils but will be getting a strip down and examination in due course.

Loom had been hacked, every connector had been cut off and the looms soldered and wrapped in insulation tape. So new loom ordered along with a lot of other missing or damaged parts.

The question I have is that there is a rust hole on the back of the frame and I would like to know what would be the best thing to get done to it i.e. welding?

Any advice greatly appreciated.

Picture attached.


38
New Member Introductions / Greg says hello.
« on: November 19, 2017, 06:48:50 PM »
Hi,

New member from Surrey.

Recently bought a 1976 CB400 Four.
Not in very good condition, new loom, rear mudguard, indicators were missing along with a lot of other parts.

Will be researching on the forums for advice and tips.

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