Front pulley bolts
Hello I have a 1980 Euro W126 280SE with 128,000 on the clock. The bolts that hold on the front pulley to the harmonic balancer seem to have sheared off. I was lucky and it happened as I pulled into my street so I was able to limp home and park it in my driveway. I have put less than 800 miles on the car and have no history of work done on the car. What would cause this to happen? I only have one of the bolts and it is not complete. What length are they, and what grade should I use to replace it? I know they are 8mm 1.25 pitch. I am going to go to a commercial fastener supplier for them.
Thanks for any help.
1991 Mazda Miata 174000
1991 Subaru 189,000 Winter beater
got rid of:
1984 VW Vanagon 195,000
1976 350SE Euro 185,000 KM
1973 280SE 4.5 (boy do I regret that)
1980 280SE European W126 4 speed manual (miss it)
1989 BMW 735iL 119000 (good riddance)