Spark plug/tube question's

[bink220]

Morning folks, just bought a slant six car, first time fooling around this style engine. Anyway, do all slant six engines have spark plug tubes?

The plugs I pulled out were Autolite 26 plugs, they have a 5/8's nut, some folks refer to this style plug as a peanut type plug. According to the local parts store along with my manual the car calls for a Champion n14y plug. The n14y plug as a 13/16 nut along with a washer on the bottom of the plug. The n14y plug will screw into the block but I cannot get a socket to fit over the plug due to no room between the head and plug. Something else the Autolite plugs I removed have a 1/2" reach, the n14y plugs have a 3/4" reach.

The car is a 67 Plymouth wagon. I'm not sure if this is the original engine.

What type/manufacture/heat range plug would be a good starting point?

Any help would be appreciated. Thanks, Bink

 

[zkx14]

74 and older should all have the drool tubes. I have the peanut head on my 75. Some plugs need the washers removed to use with drool tubes. I don't know first hand what plugs you need or diff socket size, but here's a thread showing the 2 head styles, plugs and discussion on removing the washers.

http://www.forabodiesonly.com/mopar/showthread.php?t=245365

In addition to the slant six info here, check out slantsix.org

 

[bink220]

74 and older should all have the drool tubes. I have the peanut head on my 75. Some plugs need the washers removed to use with drool tubes. I don't know first hand what plugs you need or diff socket size, but here's a thread showing the 2 head styles, plugs and discussion on removing the washers.

http://www.forabodiesonly.com/mopar/showthread.php?t=245365

In addition to the slant six info here, check out slantsix.org

Thanks, Rick

 

[GaryS]

Most good sockets won't fit inside the tubes. I have a special spark plug socket that I use for the larger plugs. It's deep, has a thin wall, and there is a piece of soft foam rubber inside the socket that protects and grips the ceramic so you can pull the plug out without damaging or dropping it.

I always use Champion plugs and I do remove the washers. I have no idea if other brands are the same.

Since you don't want to tighten plugs too tight, the cheap sheet metal plug wrenches work just fine.

 

[BillGrissom]

It sounds like you are asking "does my engine have spark plug tubes", based on the spark plug size. I think there is a 1:1 relation, but why not just compare to photos here? If you have tubes, you should probably remove them and replace the rubber gaskets (real cheap), so you don't have a "drool head" as wags refer to them. The right side of the engine can get real grubby otherwise, making spark timing adjustments a filthy job. If you do have tubes, remove the metal gaskets on the spark plugs.

 

[bink220]

all responses have been a big help, thanks. Rick

 

[73Duster6]

If you need the tube seals NAPA still has them part # FPG ES12794 and for a better plug try NGK ZFR5N NAPA #3459.