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Messages - Seamus

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76
Misc / Open / Re: Bulletin Collection nabbed off a guy on Facebook
« on: May 11, 2020, 08:44:31 AM »
Interesting concept with the studs. Have a 400 F to mess with and some studs broken.

Thanks

77
CB500/550 / Re: Which oil
« on: May 08, 2020, 08:34:59 AM »
M and P stock Rock mineral oil. Bought mine via ebay

78
CB500/550 / Re: CB500 Make new brass tubes for float bowls
« on: May 08, 2020, 08:32:54 AM »
Great job. File saved for info.

79
Tricks & Tips / Re: Portable media blaster?
« on: April 18, 2020, 08:48:25 AM »
Wish I could work that fast.  ;D
Bought a bench top cabinet a good few years ago. Works pretty well on bike parts. Not tried carbs cos my media is a bit too fierce. May give some soda a try.
At least it is contained.  ::)

80
Tricks & Tips / Re: Engine oil
« on: April 18, 2020, 08:28:14 AM »
Just bought 4 litres of 10/40 Rock mineral oil from Ebay, sold by M and P (£22.99 and free delivery)

81
CB500/550 / Re: Just checking
« on: April 15, 2020, 02:41:27 PM »
Thanks for that info. Much as I thought. I have a standard 4 pipe exhaust, so should be able to get to the sump bolt ok.
Just got to get oil... :o

82
CB500/550 / Just checking
« on: April 15, 2020, 12:13:01 PM »
My 500 has an aftermarket oil cooler fitted. I am about to change the oil and filter. I presume that draining the crankcase and removing the filter will also empty the cooler as its situated above the engine. I plan to add the correct ammount of oil, run it to fill the cooler again and then top up to the correct level.
Sound correct??

83
You could always use one (or more) old computer fan(s) to circulate the air in place of the hot air gun

84
CB500/550 / Re: Questions re Yoshi mods
« on: April 10, 2020, 08:50:05 AM »
Not one to rush things, but finally had time to look at the beasty.

Idle jets are standard at #40. Did not have time to strip carbs off, so have not checked main jets. Should not effect idle gas values anyway.

Checked a gap at tappets, all ok, may need to open them up a bit. Unfortunately, my feeler gauges are at work.

Plugs are D8ea. Ordered some new ones anyway.

Ignition timimg set as standard, advance working fine.

Discovered a bit about the cam, street special, recommended valve clearances at 0.1mm.
Ignition timing to be advanced by 5 degrees. Have moved it by about 4 degrees as that is as far as it will go on the slots. Seems to rev faster, but will need to get it out on th road and see. Unlikely to happen soon.

Wondered if the plugs could be causing problems, so will change them asap. want to check the resistance of the caps and leads as well. Dyna coils, ignition, leads and caps. All about 5 years old, but done less than 2000 miles

85
Humour / News from france
« on: April 01, 2020, 08:53:39 AM »
Yesterday, the French authorities deployed the military to supermarkets, in order to keep them secure and ensure social distancing is being respected.
However, after one old lady coughed, the armed forces have capitulated and are now negotiating terms of surrender with the shoppers.

86
CB750 / Re: Info
« on: March 30, 2020, 08:51:57 AM »
Dual disc modification. Authored by Ben Hiles. Think it originated from the US site.
There is an error relating to the use of a cb 500 speedo drive, as pointed out by Bryanj
May give some pointers though.

87
CB750 / Re: Info
« on: March 30, 2020, 08:48:31 AM »
Atached diagram of float height tool for CB750. Cannot remember where it came from as I found it when I restored a 750 K1 a few years back.


88
CB750 / Re: Info
« on: March 28, 2020, 11:20:47 AM »
Yes, I seem to recall that now that you have commented. Worth posting??

89
CB750 / Info
« on: March 28, 2020, 09:06:19 AM »
Been trawling through my backup disc to see what could be deleted.
I have a description of how to make a float height check tool for a cb750 and an article on twin disc conversion. Not sure if its for a 500 or a 750. Originally by a chap called Ben Hiles, and probably from the US site. If they are of any interest, I will post them.

90
CB750 / Re: 750k1 not starting?
« on: March 28, 2020, 08:31:29 AM »
First thoughts are that if you have no spark normally, but do when you arc the points, then it suggests the points or wireing to them.
Worth just pushing a bit of fine wet and dry accross the points to ensure they are clean.
Have you checked this effect on both sets of points?

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