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View Full Version : Watch our for your spark plug wires near headers



Gumball
05-25-2013, 12:34 PM
I guessing this is probably something we all know, but headers can cook spark plug wires. There was a recent thread about some Ford Racing wires deteriorating and I'm not sure what the outcome of that was, but recently while running my go-kart to get some time on the engine, I noticed that there was some smoke coming from the sides of the heads. At first, I thought it was some seepage from the valve covers burning off, but those were dry when I checked it after the engine cooled down. What I did notice, though, was that the underside of a couple of the wires that were near the headers had started to blister. So, that smoke was actually the oil in the spark plug wires burning off.

Needless to say, I made a couple new wires and then added boot insulators to all eight - cheap insurance.

http://i845.photobucket.com/albums/ab15/CCRsAC/SparkPlugWireInsulation_zps8776d85b.jpg (http://s845.photobucket.com/user/CCRsAC/media/SparkPlugWireInsulation_zps8776d85b.jpg.html)

skullandbones
05-25-2013, 12:44 PM
Absolutely, X2! I haven't ever used them before but I guess these GT40Ps I'm using now have that problem of proximity to the header tubes plus the header tubes are much larger than stock. But I don't think the wires would survive long without them. So it's almost like standard equipment! Thanks, WEK.