headers burning plug wires on my 427
Thread Starter
Burning Brakes
Joined: Sep 2008
Posts: 753
Likes: 0
headers burning plug wires on my 427
Please look at pics.
the problem is at exhaust 1 and 3 where the headers are very close to plugs.
there are those fabric protections for plugs , but since a small piece of the header is exposed , it burns the plugs fabric protections and then the plug wire rubber.
what should I do?
Aldo
the problem is at exhaust 1 and 3 where the headers are very close to plugs.
there are those fabric protections for plugs , but since a small piece of the header is exposed , it burns the plugs fabric protections and then the plug wire rubber.
what should I do?
Aldo
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
There are a few companies that make short header plugs. Start there if you don't already have a set.
Then, have your timing checked out. Timing can affect your exhaust temperature if it's off a bit.
Then, have your timing checked out. Timing can affect your exhaust temperature if it's off a bit.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
My 350 had the same issue, drove me crazy, no comments from the peanut gallery about the trip......anyway, I cured the problem with Jacobs ceramic plug boots, 8 of them ~140 bux or so.....OUCH!!!....
all else failed....short plugs, boot this boot that reboot,,
Burn ceramic,.....
Case closed.....
all else failed....short plugs, boot this boot that reboot,,
Burn ceramic,.....
Case closed.....
Thread Starter
Burning Brakes
Joined: Sep 2008
Posts: 753
Likes: 0
Aldo
Melting Slicks
Joined: Feb 2001
Posts: 3,330
Likes: 13
From: Europe , Luxembourg
Hi
Had the same problem on my 68 427 CI with HOOKER side headers.
Bought the original shielded GM wires and this plug boots are very slim, have plenty of gap.
Rgds. Günther
I even tried some ceramic extensions, but had problems with misfiring. Could see the spark traveling over the ceramic ? Never found out what caused this. So gave up this idea. Have this things now laying around.
Had the same problem on my 68 427 CI with HOOKER side headers.
Bought the original shielded GM wires and this plug boots are very slim, have plenty of gap.
Rgds. Günther
I even tried some ceramic extensions, but had problems with misfiring. Could see the spark traveling over the ceramic ? Never found out what caused this. So gave up this idea. Have this things now laying around.
Last edited by WESCH; Dec 1, 2008 at 10:15 AM.
