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Spark plugs
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Dave1948



Joined: 26 Sep 2014
Posts: 7
Location: Durban

PostPosted: Thu Oct 02, 2014 4:28 pm    Post subject: Spark plugs Reply with quote

We would like to find out what is the correct spark plug for a 1948 Ford Prefect.....anybody know?
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exbmc



Joined: 18 Jun 2009
Posts: 236
Location: Derby East Midlands

PostPosted: Thu Oct 02, 2014 5:12 pm    Post subject: spark plugs Reply with quote

I have a handbook for a 1953 Anglia. The old Ford sidevalves didn't change much over the years, so the Champion L10 listed in it will most likely be the right ones.
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Old Wrench



Joined: 23 Dec 2013
Posts: 226
Location: Essex and France

PostPosted: Thu Oct 02, 2014 5:14 pm    Post subject: Reply with quote

http://www.smallfordspares.co.uk/products/52-12405-a-spark-plug-14mm-l86c
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Dave1948



Joined: 26 Sep 2014
Posts: 7
Location: Durban

PostPosted: Thu Oct 02, 2014 5:24 pm    Post subject: Reply with quote

Thanks guys...
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Rick
Site Admin


Joined: 27 Apr 2005
Posts: 22429
Location: UK

PostPosted: Thu Oct 02, 2014 5:29 pm    Post subject: Reply with quote

Champion L10, as exbmc says, used to have them in my E83Ws.

Welcome to the forum btw, any chance of a thread about your Anglia?

RJ
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ka



Joined: 03 Dec 2007
Posts: 600
Location: Orkney.

PostPosted: Fri Oct 03, 2014 6:51 am    Post subject: Reply with quote

I have had so many problems with Champion in both the bike, and the Moggy, I do not give them shelf space. Stick to the NGK for me.
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colwyn500



Joined: 21 Oct 2012
Posts: 1745
Location: Nairn, Scotland

PostPosted: Fri Oct 03, 2014 7:53 am    Post subject: Reply with quote

ka wrote:
I have had so many problems with Champion in both the bike, and the Moggy, I do not give them shelf space. Stick to the NGK for me.


Totally agree with that point.
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goneps



Joined: 18 Jun 2013
Posts: 601
Location: Auckland, New Zealand

PostPosted: Fri Oct 03, 2014 9:09 pm    Post subject: Reply with quote

colwyn500 wrote:
ka wrote:
I have had so many problems with Champion in both the bike, and the Moggy, I do not give them shelf space. Stick to the NGK for me.


Totally agree with that point.


Also agree. The NGK equivalent of L10 is B6HS.
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V8 Nutter



Joined: 27 Aug 2012
Posts: 587

PostPosted: Fri Oct 03, 2014 9:11 pm    Post subject: Reply with quote

When I had my old Plymouth I put a set of NGK plugs in it and it would never start when it was hot. I went back to Champions, problem solved!
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goneps



Joined: 18 Jun 2013
Posts: 601
Location: Auckland, New Zealand

PostPosted: Fri Oct 03, 2014 9:16 pm    Post subject: Reply with quote

V8 Nutter wrote:
When I had my old Plymouth I put a set of NGK plugs in it and it would never start when it was hot. I went back to Champions, problem solved!


Sounds as though they were the wrong grade. On the other side of the coin, I recently changed the NGKs in the Morris after well over twenty years, motivated solely by a guilty conscience, not because they were dud.
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NONORT



Joined: 26 Apr 2012
Posts: 55
Location: Southampton

PostPosted: Thu Nov 20, 2014 4:24 pm    Post subject: Reply with quote

I have no connection with them but try the Green Spark Plug Company. I had trouble with a very old Rolls and after contacting them I changed the plugs to a non specified plug recommended by them. No more problems. It would seem that the slower burn rate of unleaded fuel affects the combustion and a different temperature plug was required. Hope this helps.
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goneps



Joined: 18 Jun 2013
Posts: 601
Location: Auckland, New Zealand

PostPosted: Thu Nov 20, 2014 9:26 pm    Post subject: Reply with quote

NONORT wrote:
It would seem that the slower burn rate of unleaded fuel affects the combustion and a different temperature plug was required.

My understanding is that the flame front of modern fuels travels much faster. The burn is also much hotter and drier than was the case with leaded fuels. These characteristics are probably due to the use of 'aromatic' additives (principally benzine and toluene) to restore the octane rating in the absence of lead.

By the way, this 'orrible stuff is also highly carcinogenic, so keep well away from the fumes when refuelling.

Richard
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Hillstart



Joined: 10 Jul 2017
Posts: 2

PostPosted: Sun Apr 22, 2018 4:19 pm    Post subject: Reply with quote

2 nd that unleaded fuel has a faster burn rate
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Steve00136



Joined: 14 Jan 2019
Posts: 24
Location: nottingham

PostPosted: Mon Apr 22, 2019 11:03 pm    Post subject: Reply with quote

Interesting article i found re octane with new and old fuels here at https://mymgbinfo.wordpress.com/2019/04/15/old-vs-new-octane-ratings/
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