i was changing the spark plugs on my integra and noticed the spark plugs had been misthreaded from the previous owner and was wonderin if i had to pull off the head to rethread it or can i rethread it with the head intact?? if i keep the head on the motor, what about the metal shavings that are goin to fall into the cylinder?? need some advice, thanks in advance

 

you're going to have to 'chase' the threads, or retap it depending on how bad its stripped, the shaving shouldnt be too much of a problem, most of it stays on the tap itself.. but if its really bad you might have to use a helicoil..

 

Try putting a bunch of grease on the tap. That'll trap lots of the shavings.

 

Pull the head and do it. Much cheaper than scared cylinder walls.