Senior TN Member
Join Date: Jan 2009
Location: S.F. East Bay
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1127 Post(s)
Thanked 501 Times in 451 Posts
iTrader Score: 0 reviews
Did you bottom out the stud and strip threads in block? Remove stud, clean threads and see if you can spin it down to proper depth by hand. Verify that you can spin it down another 1/2 turn and come back out and that it doesn't just spin in place. If it does, you need to remove everything and repair that hole. If it's OK, continue...
I think that model came with head-bolts? Replacing with studs is a good idea as it will prevent future headgasket issues. However, all studs need a locking compound and proper installation for optimum performance.
1. After getting proper depth, remove stud and wrap masking tape around exposed end. Set location of tape so it will go down into head hole about 3mm. Wrap enough layers of tape so that it completely fills hole. This will ensure that stud is perfectly centered in hole when you install it.
2. Apply 6-9 drops Loctite 649, or Permatex 565 or Permatex 592 on threads of stud going into block
3. Hand thread stud into block down to proper depth, making sure masking-tape centers the top end
4. Let thread-locking compound set for a couple hours, then carefully remove tape by pulling upwards into spiral
5. Clean surface of head around stud with acetone, clean washers and nuts
6. Install washer, making sure mating surface with head is completely dry
7. Carefully apply a couple drops of ARP Ultra-torque assembly lube to stud threads (or machine oil)
8. Apply ARP Ultra-torque or machine-oil to bottom of head nuts
9. Carefully install nuts and tighten in proper sequence. Use revised higher torque settings issued in 7M-gte tech-bulletin.
Failure to follow above procedure will result in stripped block threads, broken studs and/or blown head-gaskets!!! Believe me, I've blown plenty of head-gaskets on turbo cars. Even replaced head-gaskets Saturday night in parking lot of Willow Springs Raceway in order to get back into races on Sunday!