FMS Header problems

[stephenuke]

Purchased & installed a set of FMS headers on my '96 V8 about 1 year ago. I even sent them to Jet Hot for ceramic coating. Over the course of time I have experienced a "popping". Each time it came down to the spark plug wires. There were never anything visually wrong until I tried a set of JBA 9mm wires. I always use heat socks over the boot, but this time, the boots at the 3rd & 4th spark plug/cylinder were burnt right through. There doesn't seem to be enough clearance between the header pipe and the spark plug boot.

Anyone else experience similar? Any suggestions?

 

[Four0Sport]

i had the same problem with the stock manifolds on cylinder 3. i pulled the metal heat sleeve out of the head when i changed the plugs. drove about a week and the wire boot fell apart. burnt and twisted. new set of wires fixed it but im gettin a slight hesitation and i bet that the wires are getting hot again. Im looking into getting a set of FMS headers, looks like ill be buying header wrap too

 

[CDW6212R]

Header wrap would be good, and the aluminum heat shields are better if you can use them.

 

[stephenuke]

Even with the ceramic coating, I did immediately put a header wrap on the ride side headers, near cylinders 3 & 4. And I still burned my wires. Is there a product that will withstand 1200 F direct heat?