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Out & About / Re: OUT AND ABOUT 2024
« Last post by Johnwebley on Today at 10:10:46 PM »
Out at Cotswolds Biker night

Willersly, nr Broadway on the A44

Sun and fun

Good collection of sohc 4s

The 750 is for sale, £10k



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2
CB500/550 / Re: NGK plugs for 500
« Last post by McCabe-Thiele (Ted) on Today at 10:07:59 PM »
Quote from: Bryanj on Today at 10:01:21 PM
Ted, if you can find any D7EV are the dogs doodads for the 500, it should have had newish D7EA in it when you got it, D7ES is the original and not available the A is same as S according to NGK. You should not be using the R type
So a resistor spark  plug when you have resistor plug caps does this cause a problem somehow ?
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CB750 / Re: Wow this is the real deal 1968 prototype CB750
« Last post by Bryanj on Today at 10:06:05 PM »
There are a couple of diferent posts about that recently on the US forum Ash, what they say makes sense to me in that a running prototype would be there before a pre full production set sent out to tease the dealers but not sure about Honda leting that out of the factory first
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CB500/550 / Re: NGK plugs for 500
« Last post by McCabe-Thiele (Ted) on Today at 10:04:21 PM »
Quote from: deltarider on Today at 09:42:20 PM
So far nobody knows. Why did you choose 'R' plugs?

I have no idea, I can't remember when I bought them either.

I do have a set of Denso X22ES-U plugs.

I think my bike had  NGK D7EA fitted .

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CB500/550 / Re: NGK plugs for 500
« Last post by Bryanj on Today at 10:01:21 PM »
Ted, if you can find any D7EV are the dogs doodads for the 500, it should have had newish D7EA in it when you got it, D7ES is the original and not available the A is same as S according to NGK. You should not be using the R type
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CB500/550 / Re: NGK plugs for 500
« Last post by Johnwebley on Today at 09:45:17 PM »
I don't think ES are available,
The DR are resistor plugs
Could cause issues if used with resistor plug caps

That leaves D7EA,
Or if you ride harder D8EA

same as 400 and 750,

I use Denso equivalent, and an very happy

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CB500/550 / Re: NGK plugs for 500
« Last post by deltarider on Today at 09:42:20 PM »
So far nobody knows. Why did you choose 'R' plugs?
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CB750 / Wow this is the real deal 1968 prototype CB750
« Last post by AshimotoK0 on Today at 08:58:19 PM »
https://www.cb750prototype.com/
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CB500/550 / NGK plugs for 500
« Last post by McCabe-Thiele (Ted) on Today at 08:22:43 PM »
I have no idea when or where I bought them - I have a set of new NGK DR7EA plugs.
DS show the 500 plug as NGK DR7ES.

Can I use these DR7EA no idea what the S means compared to A ?

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CB500/550 / Re: Henry Coles 550K3 for sale
« Last post by Bryanj on Today at 07:49:50 PM »
He traded it in to a dealer not running right due to carbs
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