FastKat

iTrader: (10)

How many inches of clearance are required when running a spark plug wire in between the primaries on an exhaust manifold? This is for a turbo setup, so the manifold is going to get pretty hot.

-Dave

cablebandit

iTrader: (37)

i havent found the answer yet but have had no luck with the DEI fiberglass boot protectors

Darren P

iTrader: (1)

to much is not enough

Phoenix 5.7

iTrader: (7)

ive seen the boot melt off of the wire on a turbo car. wrap the hell out of the wire

qqwqeqwrqwqtq

I think any air gap is good enough and heat sleeve hurts rather than helps as it will still transfer heat to the wire. If there is no air gap and the wire is touching, it is cooked no matter what you cover it with. For example, from what I've seen-

1/16th of an inch air gap = no problems whatsoever

Now take that same gap and close it up by putting heat sleeve on the wire = cooked wire

FastKat

iTrader: (10)

Wow, do you really need that little of a gap?? I was thinking it would fall around a 1/2" minimum. It won't melt or arc off onto the manifolds?

qqwqeqwrqwqtq

I didn't have much more of a gap than that on the rear 2 plug wires on my LT1 car and ran the same set of taylor plug wires for 2+ years with no problems (and it was next to the collector, not a primary).

Your results may vary but from my experience any air gap is better than no gap and heat sleeve jammed in there.

hellbents10

iTrader: (10)

agree'd. Any gap will be sufficient.

ls1290

iTrader: (20)

The gap can be very small as long as the wire is protected with a fiberglass boot shield.

Keith

FastKat

iTrader: (10)

Hmm, sounds like people have mixed feelings about the fiberglass boot?

ls1290

iTrader: (20)

Just about anything will melt if it is touch or is very close the the header. The main point is there needs to be a little gap between them. In my experience the gap can be decreased if there is some layer of protection around the wire.

Keith

cablebandit

iTrader: (37)

gimme some time with my new wires and NO boot and ill let you know the difference. I am driving 240 miles roundtrip tonight to the track and then run some passes. we will see if the wires survive

cablebandit

iTrader: (37)

ANSWER....5 passes and the wires were very cool to the touch after just a few minutes of cool down. WITH the boots, they would stay hot for a LONG time...so hot you couldnt hold them so my vote is little clearance is needed....and no boot protectors

FastKat

iTrader: (10)

Thanks for the info! How much clearance do you have between your primaries and the wires, without the boot protectors on?