Plug type poll.

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56G80S
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Re: Plug type poll.

Post by 56G80S »

1956 G80S - currently Champion N5C - used to be just N5. Did tinker with NGK for a while but wasn't happy.

Alloy head.

Johnny B
Last edited by 56G80S on Tue Jun 27, 2017 5:23 pm, edited 1 time in total.
Brad
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Re: Plug type poll.

Post by Brad »

1955 Matchless G80S. Champion N5. Have also used an NGK BP6E. No problem with either.
If it ain't broke, fix it till it is. ;)
zwarts
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Location: LANCASHIRE UK

Re: Plug type poll.

Post by zwarts »

Here are my current choices, although after many years of good service I am becoming somewhat disillusioned with NGK plugs. Champion, it would appear, are in short supply but this is expected to improve later this year, if rumour on the internet is to be believed!
1946 AJS Model 18. NGK B5HS.
1950 AJS Model 31 race outfit. Big valves, single carb (389), open exhaust (2 separate open pipes of tuned length), gas flowed etc. NGK B6ES or Champion N5C.
1954 Matchless G80. NGK B6ES.
1955 G9 with later CSR cams, siamese exhaust, free flow 'silencer' and inlet big valves. NGK B6ES.

Cheers, Bob.
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Rob Harknett
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Re: Plug type poll.

Post by Rob Harknett »

Forum page 2 now added to file.
Plugs used pol.2.pdf
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Andy E
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Re: Plug type poll.

Post by Andy E »

1956 AJS 16ms (converted to 500cc) NGK B7ES
Bruno
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Re: Plug type poll.

Post by Bruno »

1961 Matchless G3 runs well on Champion N4C or N5C.

Cheers, Bruno
shifter
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Re: Plug type poll.

Post by shifter »

N5C in both 1950 model 20 twin and 1954 16ms single
Last edited by shifter on Wed Jun 28, 2017 11:55 am, edited 1 time in total.
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ajsm18
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Re: Plug type poll.

Post by ajsm18 »

1947 AJS Model 18 500 NGK B6ES or B7ES (both used with success)
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dave16mct
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Re: Plug type poll.

Post by dave16mct »

Mark can you check that, your '47 AJS should have an iron head and use short reach plugs, B6HS, or B7HS.
Cheers Dave.
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Rob Harknett
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Re: Plug type poll.

Post by Rob Harknett »

Good comment Dave, don't want to list a plug for a bike that may have non standard parts. We should disregard one offs and specials. Also where a plug is listed for any single, this must also show iron or alloy head.
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