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361 Ford question


 
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Erik Ks farmer
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PostPosted: Sun Oct 07, 2012 3:43 pm    Post subject: 361 Ford question Reply to specific post Reply with quote

I have a 361 in a 76 Ford cabover that I haul grain with, it started running rough under load on the last couple loads of corn I took in, I picked up a fuel pump, but I got to looking it over before I took the pump off. The #3 plug on the right bank was loose and the wire had melted to it. I pulled out the plug and the threads are a mess. I'm not sure what to do here, what would have caused the plug to work loose? Is it worth trying to thread a new plug in to get through bean harvest (86 acres)?
 
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J.Wondergem
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Joined: 05 Mar 2009
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Location: Rockford, Mi

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PostPosted: Sun Oct 07, 2012 3:45 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote


Or put a heli coil in , then a new plug.
 
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Ted in NE-OH
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PostPosted: Sun Oct 07, 2012 3:53 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

Re-tap and see if it holds
 
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cole in mo.
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PostPosted: Sun Oct 07, 2012 3:55 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

Somtimes a plug will work loose, then the cumbustion blows past the threads, causing what you see on yours. Ease a new plug in it and go.
 
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60 acre hillside
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PostPosted: Sun Oct 07, 2012 3:59 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

I have a 18mm spark plug clean-up die they are available at most any parts house
 
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Shorty 38
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PostPosted: Sun Oct 07, 2012 4:03 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

Yes, Heli-coil is the answere, I found the bushing type to work the best for spark plugs.
 
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DeltaRed
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Joined: 25 Feb 2010
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Location: Delta,colorado

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PostPosted: Sun Oct 07, 2012 4:05 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

At one time I had a 390 in a '67 F 100 that would
rutinely "blow out" a plug(always the same
hole).Screw it back in and keep on
going.WARNING:wear gloves before screwing hot plug
back into engine.
 
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Shorty 38
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PostPosted: Sun Oct 07, 2012 4:05 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

Yes, Heli-coil is the answere, I found the bushing type to work the best for spark plugs.
 
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BushogPapa
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PostPosted: Sun Oct 07, 2012 4:16 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote


IF you get the idea to pull and replace the head...

The 361 and 391 He DO NOT interchange with the 352, 360 or 390 engines...
The Heat passages through the Heads are in a different place and will not match the Intake manifold..
You would need to replace the entire pair of Heads and the Intake, to use 352/360 or 390 Heads..
BTDT...

Ron..
 
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Huskers86
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Joined: 14 Aug 2010
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Location: Loomis,Ne.

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PostPosted: Sun Oct 07, 2012 4:30 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

Go to the auto parts store and get a thread chaser. It's a tap for straightning out plug holes. I've used that thing many times on buggered up plug threads and have had great results. I don't think you want a heli coil as I'm sure the plug seat is tapered.
 
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Brian Jasper co. Ia
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PostPosted: Sun Oct 07, 2012 5:46 pm    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

I"d try the thread chaser. For anything else Ford FE related, check out Ford FE dot com. If you want to replace the heads, I have a set plain 390 pickup heads still in the wrappers from a rebuilder and a cast iron S code 4V intake. Email me if interested.
 
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RodinNS
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Joined: 01 Sep 2005
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PostPosted: Mon Oct 08, 2012 6:12 am    Post subject: Re: 361 Ford question Reply to specific post Reply with quote

Try chasing the thread with a tap. If that doesn't tighten it up, use a Heli-Coil. That will work.

Rod
 
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