just curious.. what would make a header bolt loosen up about every week? its the same one everytime.. i use ARP bolts w/ a little anti-seize on it, but it still loosens... any ideas of how to fix this or get to the bottom of this??

thanks
vinnie

 

I'd switch to Stage 8s. They never loosen.

 

I had the exact same thing happen on mine. About every 2 weeks, last bolt on passenger side head would be a few turns loose. Never figured out why until I crawled under the car one day and looked up at the header, noticed I'd put lock washers on every single other bolt except that one. I replaced the gasket, put lock washers on every bolt, and havent had a problem yet.

 

it's funny you say that, because that's the same bolt that is loosening up.. i think i'll give the lock washer a try.. does ARP make one or just get one at a hardware store?

thanks
vinnie