[lxh89]

Originally Posted by highfigh

Interesting discussion. I have a question.

I just bought an 03. The sticker on the door says 6/03. So what heads should I have? The 4 thread ones, right?

But I count 8.5 turns when removing the spark plugs. So by your statement these are the newer heads? I have no blue stripe on my heads, just a yellow X, i think.

I'm not understanding the logic of your simple test. A spark plug for our cars has like 9 threads on it. How would it matter how many threads are in the heads? It still takes 9 full turns to fully seat a spark plug, whether there is 4 threads in the head, or 9 or 5 or 1....

Am i making sense or am i totally missing something?

It doesnt matter if the head has 1 thread or 400 threads, the number of turns to remove the plug is determined by the spark plug thread count

Tony