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Author Topic: Spark plug for BBC Square Port Heads?  (Read 3536 times)

Offline Mike Phillips

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Spark plug for BBC Square Port Heads?
« on: July 04, 2009, 01:32:02 pm »
Local speed shop set me up with NGK BR6FS plugs.

I gapped them at .40 thousands for use with MSD 7AL

They're going in kind of hard?  Maybe due to some spray paint on threads on head when engine was  painted?

 ???
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Offline 82k5diesel

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Re: Spark plug for BBC Square Port Heads?
« Reply #1 on: July 04, 2009, 01:59:20 pm »
Clean the threads with a tap might help.
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Offline Mike Phillips

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Re: Spark plug for BBC Square Port Heads?
« Reply #2 on: July 04, 2009, 02:19:30 pm »
Don't want to do that, might get particles inside the cylinder head.

I put some oil on the threads of the plug and got them to start. 

Trying to figure out how to build my MSD wires now...


Ugh...

 :P
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Offline eventhorizon66

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Re: Spark plug for BBC Square Port Heads?
« Reply #3 on: July 04, 2009, 04:12:06 pm »
If there is paint on the threads, don't you think you are going to get paint shavings in the cylinder when you finally thread the plugs in?
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'85 C10 SWB 350 700R4 TKO600

Offline Mike Phillips

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Re: Spark plug for BBC Square Port Heads?
« Reply #4 on: July 04, 2009, 05:30:56 pm »
Quote from: eventhorizon66 on July 04, 2009, 04:12:06 pm
If there is paint on the threads, don't you think you are going to get paint shavings in the cylinder when you finally thread the plugs in?

Guess so...

 :o
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