spaek plug

kurt v · Jun 24, 2021

What motor would a champion c 55 be used in?

thanks kurt

Crazy Horse · Jun 24, 2021

Do some Google searching Kurt ..... quickly I found it is some kind of a high performa nce racing spark plug .... for what I have no idea. Do you have a single one or a set (4,6,8 ??).

buickanddeere · Jun 24, 2021

With the 3/4" reach and being non resistor . These plugs would work rather well in old engines that need a longer reach to get the electrodes down nearer the combustion chamber . Being non resistor eliminates the power loss and the chances of the plug's internal resistor of failing.
Used to use Autolite 437 with 1/2" reach here on the Small Deere gassers and the V4 Starting engines. now we install the 3/4" reach plugs.

DESCRIPTION
Champion racing series plugs include all the features of their conventional plugs, but are built with extreme engine conditions and durability in mind. Nickel alloy ground electrode. Copper-cored nickel alloy center electrode allows for increased conductivity and heat control.
PRODUCT SPECIFICATIONS
Shell
Thread Diameter
14mm
Thread Pitch
1.25mm
Seat Type
Gasket
Reach
19mm (3/4")
Hex Size
5/8" (16mm)
Terminal Type
Solid
Gap
.026" (0.65mm)
Center Electrode
Material
Nickel
Type
Fine Wire
Size
1.3mm
Projection
Non-Projected
Ground Electrode
Material
Nickel
Specifications
Resistor
No
Heat Range
55
Torque Specs
Cast Iron: 26-30 lb. ft. Aluminum: 18-22 lb. ft.

Janicholson · Jun 24, 2021

Never use any plug with the incorrect reach in an engine. Too long, and they can hit moving parts, and become coated with deposits in the exposed
threads. these deposits are hard and destroy the threads in the head when trying to remove them. Or worse yet, break off in the head and require
removing the head for repair. Too short, and the female therads get the deposits, also lowering compression. Then the correct plug cannot be
installed due to the deposits. I ran into this 2 weeks ago on a mower that had short plugs installed in a long reach aluminum engine. It required
thread chasing and cleaning of the cylinder to get it operational. Jim

sotxbill · Jun 24, 2021

(quoted from post at 13:34:13 06/24/21) Never use any plug with the incorrect reach in an engine. Too long, and they can hit moving parts, and become coated with deposits in the exposed
threads. these deposits are hard and destroy the threads in the head when trying to remove them. Or worse yet, break off in the head and require
removing the head for repair. Too short, and the female therads get the deposits, also lowering compression. Then the correct plug cannot be
installed due to the deposits. I ran into this 2 weeks ago on a mower that had short plugs installed in a long reach aluminum engine. It required
thread chasing and cleaning of the cylinder to get it operational. Jim

Bingo... the longer threads will get fouled with carbon and then destroy the head when coming out.. assuming you even get them out... then there is the chance of hitting the piston... SO... never use longer threaded plug than the head is design for!!!!!!

sotxbill · Jun 24, 2021

[/img:6ff2c45632]

spaek plug

kurt v

Member

Crazy Horse

Well-known Member

buickanddeere

Well-known Member

Janicholson

Well-known Member

sotxbill

Well-known Member

sotxbill

Well-known Member

Similar threads