heli-coils work ok, but they are more of a temporary fix. some people have gotten good mileage out of them but many have issues with them backing out and stripping out the already hogged out hole. i would invest in a timesert. timesert is just as if not more reliable as stock and is not hard to do, just more expensive.
I used that one when mine went out on me nearly two years ago. Held the entire time. No issues with it. I don't use my kit anymore since I am putting a new engine in so I'd sell you mine for way less than what amazon wants, just PM me.
Edit: Just take your time using this kit. IT DOES WORK, like a F***ing charm. But to do it right you must take your time and just vacuum out the spark plug hole and if you can vacuum the cylinder as well (use a thin tube connected to the vacuum) Using a lot of grease on the taps helps as well. Don't want loose metal in the cylinder. I did it by myself. Took me a few hours but it worked like a charm and the car ran like new once I was done.
Perfection is impossible, but striving for it is not
Last edited by copermn; March 8th, 2015 at 12:43 PM.
I have used the timesert kit to fix multiple blown out plugs on multiple vehicles. I have used helicoils for non vehicle related things and there is no way id use one for a spark plug on a car id prefer to keep. The timesert kit is a few more steps but is fairly easy and can be done within an afternoon.
Thanks for all the info guys, But for the amount the timesert is, I could start building a 306... I am seriously considering putting a pushrod engine in this car. I can build a 400 hp 306 for like 3 grand. It would be a lot of work to convert but in the long run I would save myself the headache of another plug blowout again. Reps to you all!