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Messages - SteveW

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61
Member 4 Sales / Re: 400/4 Cam Chain tensioner.
« on: October 29, 2023, 12:51:26 PM »
Thanks Bryan, I’ll check the condition of mine tomorrow.

62
Member 4 Sales / Re: 400/4 Cam Chain tensioner.
« on: October 29, 2023, 12:26:55 PM »
Are there alloy ones available for other models?

Just in the process of stripping down my 550, haven’t closely examined my tensioner yet but I know replacements from DS are £££.

63
Announcements / Re: 550 Keilin carburettors
« on: October 26, 2023, 06:51:30 PM »
What about the Keihin 022A’s ? Got those on my 74 550 and they’ve been fine for the last 5 years.

64
CB500/550 / Re: Reprofiled camshaft
« on: October 25, 2023, 08:35:51 PM »
Check this out:

http://www.chinonthetank.com/2016/05/cb650-cam-in-a-cb550/

This is what I’m currently doing.

65
CB500/550 / Re: What would cause this camshaft damage?
« on: October 22, 2023, 11:07:58 PM »
Wouldn't change in both gearing AND tachometer give the correct instrument reading in this case ?

That’s what I thought, I’ve read several posts on mainly the US site about this and they state you only need cam, drive gear and tacho.

66
CB500/550 / Re: What would cause this camshaft damage?
« on: October 22, 2023, 08:29:17 PM »
I have the 650 drive gear and a 650 tacho so hopefully all good to go.

67
CB500/550 / Re: What would cause this camshaft damage?
« on: October 22, 2023, 06:23:49 PM »
Forgot to say, the bike has 16500 miles supposedly from new. The rest of the engine looks perfect, there are no ridges on the inside of the barrels.

68
CB500/550 / Re: What would cause this camshaft damage?
« on: October 22, 2023, 06:21:58 PM »
Luckily I already have a replacement cam to go in. I’m going to stick a CB650 cam in, supposed to be a good mod for a little bit more power.

69
CB500/550 / What would cause this camshaft damage?
« on: October 22, 2023, 05:46:32 PM »
Engine was running perfectly, I’ve only stripped the top end due to oil leaks.

Found damage to most of the lobes on the cam. There is no damage to the rest of the cam where it sits in the head and no damage to the rockers.
Also found this tiny disk of metal, about 2mm thick by 5mm diameter. Don’t think it’s part of the engine.


70
Misc / Open / Re: Painting my engine a few questions
« on: October 21, 2023, 08:58:23 PM »
How easy are the bungs to remove?

71
CB500/550 / Re: Unusual twin carb set-up on this one
« on: October 19, 2023, 09:28:55 AM »
There is a company in the States called Murray’s Carbs, they do a twin carb set up with the manifolds.
Think they Use Mikuni VM34 carbs.

72
Misc / Open / Re: Painting my engine a few questions
« on: October 17, 2023, 09:04:29 PM »
Thanks Julie and Dom  :)

73
Misc / Open / Painting my engine a few questions
« on: October 17, 2023, 03:30:38 PM »
Before I paint my engine with the Simoniz VHT stuff I was just wondering a few things.

Do I need any kind of etch primer first?

Is the Simoniz paint resistant to petrol, if not  can you lacquer over it?

Thanks.

74
Misc / Open / Re: Cosmetic options for these clamps.
« on: September 23, 2023, 08:28:56 PM »
The clamps on my 650 are aluminium, I was hoping to use a set to replace my rusty 550 ones, but they are a bigger diameter.

I wonder if there are an aluminium set off a different model that would fit the 550?

75
Misc / Open / Re: NE gasket set, do I need thicker o-rings?
« on: September 09, 2023, 04:46:43 PM »
I’ll be doing the top end on my 550 over the winter so I’ll put up the measurements from that one as well.

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