Spark Plugs - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

Thanatos · 08-05-2002, 02:51

Howdy peoples,

I was just reading through my workshop manual, when I noticed that EB-ED XR6's use different spark plugs to the standard EA-ED 6's.

Does anyone know what the difference is???

Would there be any performance gains in my EA (MPI, Cam, Head work, etc.) if I ran these spark plugs?

Cheers,
Dave

TIKFD6 · 08-05-2002, 03:23

Hi Dave

All i know is they run a different compression ratio.

XR6 is higher.

Might have somthing to do with it?

Cheers
Kerry

Thanatos · 08-05-2002, 03:34

Hmmmm, if that's the only reason, then it might make a bit of a difference to my baby, since her compression should be slightly higher than that of an xr6.

Thanks, mate.

Dave

Bass Crazy · 08-05-2002, 04:32

Same here dude. What plugs are they?

MADNC_8 · 08-05-2002, 04:37

i run em in my XF Great for LPG too NGK-R the number on the box is 4381 ZGR6B-11 they are 3-95 each from autobarn

EDXR8 · 08-05-2002, 05:21

The XR6 ones have a different temperature range. They run great in standard 6's and even better in LPG cars.

Bass Crazy · 08-05-2002, 05:22

hmm.. I already use NGK-R's, but im not sure bout the number. I'll check it out.
Cheers

EDXR8 · 08-05-2002, 05:34

The XR6 ones have NGK-R BPR5ES 15 on them.

Thanatos · 08-05-2002, 18:07

Kewl, thanks for the help, guys.

I'll be putting a set of those in on Wednesday, I'll let you all know how she goes.

Cheers,
Dave

EDFUTURA · 08-06-2002, 03:50

The XR6 / LPG spec plugs are a different heat range AND the electrode height is slightly different (probably at least in part to do with the heat range - ie. height of the insulator). I thought they were cooler, but I'm fairly sure that the insulators end up being taller which contradicts that.

I have consistently found them to make my car feel noticeably sluggish (have tried them 3 times in 5 years - most recently last week - thought it worth trying them with the Dev 5 cam).