Size of Auto Sparkplugs.

Are standard car sparkplugs 12mm.

Asking so it get the right kind of CHT probes.

12mm is one popular thread size for ground vehicles; others are 10mm
and 14mm.

Gig 601XL Builder wrote:
Are standard car sparkplugs 12mm.

Asking so it get the right kind of CHT probes.


The MOST common sparkplugs are 14mm---that's probably the only other
size of t/couple you'll find (Old cars & airplanes are 18mm) the
Franklins used 14mm plugs,

Gig 601XL Builder wrote:
Are standard car sparkplugs 12mm.

Asking so it get the right kind of CHT probes.



Just take an old plug and measure it.. or go to the auto parts store
with a ruler and check one at the counter.

Dave

Dave S wrote:
Gig 601XL Builder wrote:
Are standard car sparkplugs 12mm.

Asking so it get the right kind of CHT probes.



Just take an old plug and measure it.. or go to the auto parts store
with a ruler and check one at the counter.

Dave

That's what I'm going to have to do since I don't have the engine yet.

On Jun 15, 8:28 am, "Gig 601XL Builder" wrDOTgiaconaATsuddenlink.net
wrote:
Dave S wrote:
Gig 601XL Builder wrote:
Are standard car sparkplugs 12mm.

Asking so it get the right kind of CHT probes.


Cars may have 10, 12, 14 or 18mm. Very old cars may have US threads.