WLDD plugs

[lightninss]

Need to get a little info on what type of plug to use. I am using H-D plug 5r6a, is this the correct heat range or do I need a different plug.

Thanks
Lightnin

[vph-d]

How does a long reach shovelhead 14mm resistor plug work in a Side Valve? The heat range is the same as a Pan/early shovel 3-4, but made for the 045 gap.
VPH-D

[lightninss]

Someone put an insert in the head.

[vph-d]

Doh!
The 18mm plugs were offer in heat ranges #2,3, and 4. As stated, what you're using is equivalent to a 3-4, except for the large electronic ignition gap. As a rule though, hot rod motors use a cooler plug than normal. I think an N12YC is a Champion version of the long reach 5-6. Try an auto parts store, but avoid resistor type plugs.
VPH-D

[lightninss]

So would you gap them at .025 or at .045?

[vph-d]

Try .028.
VPH-D

[lightninss]

Sorry it has taken so long for me to reply. Plugs worked fine went with N12YC gapped at .028. Thanks for your help.