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Plug Number needed


 
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Rpeavler
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Joined: 13 Jul 2015
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PostPosted: Sat Jul 27, 2019 10:53 am    Post subject: Plug Number needed Reply to specific post Reply with quote

What spark plug is a good replacement for LEONARD # 4 plug? Thanks.
 
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T.R.K.
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PostPosted: Sat Jul 27, 2019 5:54 pm    Post subject: Re: Plug Number needed Reply to specific post Reply with quote

Never heard of a Leonard spark plug. But there were hundreds of MFG at one time or another.

What is it in? Is it 7/8 thread?
 
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Rpeavler
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PostPosted: Sun Jul 28, 2019 4:39 am    Post subject: Re: Plug Number needed Reply to specific post Reply with quote

In a 47 U-Moline. It is a 7/8 thread.
 
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molinegb
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PostPosted: Sun Jul 28, 2019 5:42 am    Post subject: Re: Plug Number needed Reply to specific post Reply with quote

Autolite 3076 is best for low compression U.
 
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Rpeavler
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PostPosted: Sun Jul 28, 2019 6:12 pm    Post subject: Re: Plug Number needed Reply to specific post Reply with quote

Not really low compression. What about Autolite 386?
 
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molinegb
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PostPosted: Mon Jul 29, 2019 4:42 am    Post subject: Re: Plug Number needed Reply to specific post Reply with quote

If 47 it is low compression. Maybe 6 to 1 tops.
 
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mmfan55
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PostPosted: Mon Aug 05, 2019 2:54 pm    Post subject: Re: Plug Number needed Reply to specific post Reply with quote

Champion W10
 
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