The Stupid Engine Questions Thread

[ben2go]

Non resistor plugs will glow dimly.

I didn't even think about that.

 

[SUBURBAN5]

They are r44lts spark plugs. Ac delco

Non resistor plugs will glow dimly.

 

[PlayingWithTBI]

They are r44lts spark plugs. Ac delco

Why LTS (Long Taper Seat), do you have aluminum heads? Standard plugs for iron heads s/b R44TS. If you do have aluminum heads you probably should use long reach flat gasket plugs.

 

[SUBURBAN5]

Why LTS (Long Taper Seat), do you have aluminum heads? Standard plugs for iron heads s/b R44TS. If you do have aluminum heads you probably should use long reach flat gasket plugs.

I have no clue. Came with the motor from gm. I know these heads are cast iron

 

[PlayingWithTBI]

Came with the motor from gm. I know these heads are cast iron

The only issue is with the long reach plugs, if the threads stick out into the combustion chamber AND they get carbon build up, good luck getting them back out easily.

 

[SUBURBAN5]

The only issue is with the long reach plugs, if the threads stick out into the combustion chamber AND they get carbon build up, good luck getting them back out easily.

What was oem?

 

[PlayingWithTBI]

What was oem?

IIRC R44(or 45)TS

Edit: you may be able to take a pick, stick it in the plug hole to the end of the threads, and measure your depth.

 

[SUBURBAN5]

IIRC R44(or 45)TS

Edit: you may be able to take a pick, stick it in the plug hole to the end of the threads, and measure your depth.

So I shouldn't have any threads showing on the spark plug?

 

[PlayingWithTBI]

So I shouldn't have any threads showing on the spark plug?

IMO, no. Anyone else want to chime in?

 

[ben2go]

IMO, no. Anyone else want to chime in?

I agree. No heads I've ever worked on had the threads protrude into the head.