colder spark plug

Reply Subscribe

Thread Tools

Search this Thread

07-24-2007, 10:13 AM

desertbagger

Intermediate

Thread Starter

Join Date: May 2006

Location: Gillette,WY

Posts: 37

Likes: 0

Received 0 Likes on 0 Posts

colder spark plug

For Champion # RA8HC, What is the one step colder # ?

Reply Like

07-24-2007, 10:34 AM

geargrinder

Road Master

Join Date: Dec 2006

Location: Omaha Nebraska

Posts: 1,058

Likes: 0

Received 6 Likes on 5 Posts

RE: colder spark plug

Quote:

ORIGINAL: desertbagger

For Champion # RA8HC, What is the one step colder # ?

For most domestic plug manufacturers, the lower the number the colder the plug, so a RA7HC would be the same plug one step colder. FWIW, the opposite numbers Vs heat rangeapplies to most foreign plug manufacturers, like Bosch, NGK etc.

Reply Like

07-24-2007, 12:21 PM

nvsteve

Ultimate HDF Member

Join Date: Oct 2006

Location: Nevada

Posts: 5,977

Likes: 47

Received 74 Likes on 51 Posts

RE: colder spark plug

What geargrinder says is correct but I believe the next step colder is actually an RA6HC. Not sure there is a 7.

Reply Like

07-24-2007, 12:45 PM

pittguy

Outstanding HDF Member

Join Date: Jul 2006

Location:

Posts: 2,303

Likes: 0

Received 3 Likes on 3 Posts

RE: colder spark plug

Cooler plug doesnt always mean cooler head temps,sometimes it just the opposite.

Reply Like

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

Need help with spark plug part number.

cruzmisl

Touring Models

06-25-2014 04:22 PM

What Is This? Plug Adapter?

NSCoyote

General Harley Davidson Chat

07-07-2012 11:23 PM

autolite AP65DP2 spark plug

grippper293

Ignition/Tuner/ECM/Fuel Injection

07-01-2007 11:13 AM

Plug gap?

Shift_4lo

Sportster Models

03-11-2006 03:37 PM

Spark Plug FAQ's

HDF Tech

Engine Mechanical Topics

12-26-2005 01:10 PM