ARP stainless steel bolts

JAC · #1 (**permalink**) 06-21-2007, 07:10 PM

Just wondering if anyone knows why the polished ARP stainless steel bolts all come with flat washers instead of lock washers.
Thanks.

JAC · #2 (**permalink**) 06-23-2007, 10:23 AM

NO? Ok Thanks.

Robert McLinden · #3 (**permalink**) 06-23-2007, 10:29 AM

Generally speaking lock washers are ok for a swing set or your Cheby but I would not want to use them on my AFR cylinder heads. You should either use locking nuts (various types are available) or thread locker.

CHANMADD · #4 (**permalink**) 06-23-2007, 07:36 PM

Firstly ,What bolts are these? Head Bolts ????

Rick Parker · #5 (**permalink**) 06-23-2007, 10:54 PM

A word to the wise: They are not strong enough fto be used or head bolts, not that this was the intention. I dont believe ARP sells a "Split Lock Washer".
Those are not for High Performance Automotive use. Use a correct flat washer and a thread locking liquid such as Locktite.

JAC · #6 (**permalink**) 06-24-2007, 08:28 AM

These are for water pump, carbs(studs for carbs), starter, intake manifold, headers, and rear diff. cover. Heads are already installed with ARP studs (non stainless).
Thanks guys, I was just wondering why no lock washers.

Zoom This · #7 (**permalink**) 06-24-2007, 04:43 PM

I asked the same question of the ARP rep for my header bolts. I was told that there is a chance of split lock washers cracking and they wanted nothing to do with that possible situation. The ARP guy said to torque the bolt - header bolts in my case - to the proper torque spec of 35 lbs. for my 418W with aluminum heads and the natural stretch of the aluminum will lock the bolt in place. Don't forget anti-seize compound. Mine are still in place 2 years later and have not loosened.